diff --git a/packages/flutter/lib/src/cassowary/constant_member.dart b/packages/flutter/lib/src/cassowary/constant_member.dart
index 3ab53211cb..2d077656db 100644
--- a/packages/flutter/lib/src/cassowary/constant_member.dart
+++ b/packages/flutter/lib/src/cassowary/constant_member.dart
@@ -4,6 +4,7 @@
 
 import 'expression.dart';
 import 'equation_member.dart';
+import 'term.dart';
 
 class ConstantMember extends EquationMember {
   /// Creates a [ConstantMember] object.
@@ -13,7 +14,7 @@ class ConstantMember extends EquationMember {
   ConstantMember(this.value);
 
   @override
-  Expression asExpression() => new Expression([], this.value);
+  Expression asExpression() => new Expression(<Term>[], this.value);
 
   @override
   final double value;
diff --git a/packages/flutter/lib/src/cassowary/expression.dart b/packages/flutter/lib/src/cassowary/expression.dart
index b8e655bfa1..55742aa6e3 100644
--- a/packages/flutter/lib/src/cassowary/expression.dart
+++ b/packages/flutter/lib/src/cassowary/expression.dart
@@ -156,7 +156,7 @@ class Expression extends EquationMember {
   EquationMember operator /(EquationMember m) {
     if (!m.isConstant) {
       throw new ParserException(
-          'The divisor was not a constant expression', [this, m]);
+          'The divisor was not a constant expression', <EquationMember>[this, m]);
       return null;
     }
 
diff --git a/packages/flutter/lib/src/cassowary/solver.dart b/packages/flutter/lib/src/cassowary/solver.dart
index 0f66b6cc67..dcbc227f2d 100644
--- a/packages/flutter/lib/src/cassowary/solver.dart
+++ b/packages/flutter/lib/src/cassowary/solver.dart
@@ -250,7 +250,7 @@ class Solver {
       return Result.badRequiredStrength;
 
     Constraint constraint = new Constraint(
-      new Expression([new Term(variable, 1.0)], 0.0),
+      new Expression(<Term>[new Term(variable, 1.0)], 0.0),
       Relation.equalTo
     );
     constraint.priority = priority;
diff --git a/packages/flutter/lib/src/cassowary/term.dart b/packages/flutter/lib/src/cassowary/term.dart
index 59840bc257..d161196534 100644
--- a/packages/flutter/lib/src/cassowary/term.dart
+++ b/packages/flutter/lib/src/cassowary/term.dart
@@ -15,7 +15,7 @@ class Term extends EquationMember {
 
   @override
   Expression asExpression() =>
-      new Expression([new Term(this.variable, this.coefficient)], 0.0);
+      new Expression(<Term>[new Term(this.variable, this.coefficient)], 0.0);
 
   @override
   bool get isConstant => false;
diff --git a/packages/flutter/lib/src/foundation/binding.dart b/packages/flutter/lib/src/foundation/binding.dart
index b9fb06ebb4..f420d3659d 100644
--- a/packages/flutter/lib/src/foundation/binding.dart
+++ b/packages/flutter/lib/src/foundation/binding.dart
@@ -239,7 +239,7 @@ abstract class BindingBase {
         ));
         return new developer.ServiceExtensionResponse.error(
           developer.ServiceExtensionResponse.extensionError,
-          JSON.encode({
+          JSON.encode(<String, dynamic>{
             'exception': caughtException.toString(),
             'stack': caughtStack.toString(),
             'method': method
diff --git a/packages/flutter/lib/src/http/response.dart b/packages/flutter/lib/src/http/response.dart
index 56d294559e..155a8ad9bd 100644
--- a/packages/flutter/lib/src/http/response.dart
+++ b/packages/flutter/lib/src/http/response.dart
@@ -10,7 +10,7 @@ class Response {
   /// Creates a [Response] object with the given fields.
   ///
   /// If [bodyBytes] is non-null, it is used to populate [body].
-  Response.bytes(this.bodyBytes, this.statusCode, { this.headers: const {} });
+  Response.bytes(this.bodyBytes, this.statusCode, { this.headers: const <String, String>{} });
 
   /// The result of decoding [bodyBytes] using ISO-8859-1.
   ///
diff --git a/packages/flutter/lib/src/material/input.dart b/packages/flutter/lib/src/material/input.dart
index f174727ac0..659b65ece2 100644
--- a/packages/flutter/lib/src/material/input.dart
+++ b/packages/flutter/lib/src/material/input.dart
@@ -221,7 +221,7 @@ class _InputState extends State<Input> {
       double iconTop = topPadding + (textStyle.fontSize - iconSize) / 2.0;
       child = new Row(
         crossAxisAlignment: CrossAxisAlignment.start,
-        children: [
+        children: <Widget>[
           new Container(
             margin: new EdgeInsets.only(right: 16.0, top: iconTop),
             width: config.isDense ? 40.0 : 48.0,
diff --git a/packages/flutter/lib/src/material/time_picker.dart b/packages/flutter/lib/src/material/time_picker.dart
index cbf902b890..fed10e5783 100644
--- a/packages/flutter/lib/src/material/time_picker.dart
+++ b/packages/flutter/lib/src/material/time_picker.dart
@@ -281,12 +281,12 @@ List<TextPainter> _initPainters(List<String> labels) {
 }
 
 List<TextPainter> _initHours() {
-  return _initPainters(['12', '1', '2', '3', '4', '5',
+  return _initPainters(<String>['12', '1', '2', '3', '4', '5',
                         '6', '7', '8', '9', '10', '11']);
 }
 
 List<TextPainter> _initMinutes() {
-  return _initPainters(['00', '05', '10', '15', '20', '25',
+  return _initPainters(<String>['00', '05', '10', '15', '20', '25',
                         '30', '35', '40', '45', '50', '55']);
 }
 
diff --git a/packages/flutter/lib/src/rendering/editable_line.dart b/packages/flutter/lib/src/rendering/editable_line.dart
index 10851f90f3..c490d7fd2c 100644
--- a/packages/flutter/lib/src/rendering/editable_line.dart
+++ b/packages/flutter/lib/src/rendering/editable_line.dart
@@ -129,12 +129,12 @@ class RenderEditableLine extends RenderBox {
       // TODO(mpcomplete): This doesn't work well at an RTL/LTR boundary.
       Offset caretOffset = _textPainter.getOffsetForCaret(selection.extent, _caretPrototype);
       Point start = new Point(caretOffset.dx, _contentSize.height) + offset;
-      return [new TextSelectionPoint(localToGlobal(start), null)];
+      return <TextSelectionPoint>[new TextSelectionPoint(localToGlobal(start), null)];
     } else {
       List<ui.TextBox> boxes = _textPainter.getBoxesForSelection(selection);
       Point start = new Point(boxes.first.start, boxes.first.bottom) + offset;
       Point end = new Point(boxes.last.end, boxes.last.bottom) + offset;
-      return [
+      return <TextSelectionPoint>[
         new TextSelectionPoint(localToGlobal(start), boxes.first.direction),
         new TextSelectionPoint(localToGlobal(end), boxes.last.direction),
       ];
diff --git a/packages/flutter/test/animation/animation_controller_test.dart b/packages/flutter/test/animation/animation_controller_test.dart
index bc247f7744..66fbecd895 100644
--- a/packages/flutter/test/animation/animation_controller_test.dart
+++ b/packages/flutter/test/animation/animation_controller_test.dart
@@ -54,50 +54,50 @@ void main() {
         valueLog.add(controller.value);
       });
 
-    expect(log, equals([]));
-    expect(valueLog, equals([]));
+    expect(log, equals(<AnimationStatus>[]));
+    expect(valueLog, equals(<AnimationStatus>[]));
 
     controller.forward();
 
-    expect(log, equals([AnimationStatus.forward]));
-    expect(valueLog, equals([]));
+    expect(log, equals(<AnimationStatus>[AnimationStatus.forward]));
+    expect(valueLog, equals(<AnimationStatus>[]));
 
     controller.reverse();
 
-    expect(log, equals([AnimationStatus.forward, AnimationStatus.dismissed]));
-    expect(valueLog, equals([]));
+    expect(log, equals(<AnimationStatus>[AnimationStatus.forward, AnimationStatus.dismissed]));
+    expect(valueLog, equals(<AnimationStatus>[]));
 
     controller.reverse();
 
-    expect(log, equals([AnimationStatus.forward, AnimationStatus.dismissed]));
-    expect(valueLog, equals([]));
+    expect(log, equals(<AnimationStatus>[AnimationStatus.forward, AnimationStatus.dismissed]));
+    expect(valueLog, equals(<AnimationStatus>[]));
 
     log.clear();
     controller.forward();
 
-    expect(log, equals([AnimationStatus.forward]));
-    expect(valueLog, equals([]));
+    expect(log, equals(<AnimationStatus>[AnimationStatus.forward]));
+    expect(valueLog, equals(<AnimationStatus>[]));
 
     controller.forward();
 
-    expect(log, equals([AnimationStatus.forward]));
-    expect(valueLog, equals([]));
+    expect(log, equals(<AnimationStatus>[AnimationStatus.forward]));
+    expect(valueLog, equals(<AnimationStatus>[]));
 
     controller.reverse();
     log.clear();
 
     WidgetsBinding.instance.handleBeginFrame(const Duration(seconds: 10));
-    expect(log, equals([]));
-    expect(valueLog, equals([]));
+    expect(log, equals(<AnimationStatus>[]));
+    expect(valueLog, equals(<AnimationStatus>[]));
     WidgetsBinding.instance.handleBeginFrame(const Duration(seconds: 20));
-    expect(log, equals([]));
-    expect(valueLog, equals([]));
+    expect(log, equals(<AnimationStatus>[]));
+    expect(valueLog, equals(<AnimationStatus>[]));
     WidgetsBinding.instance.handleBeginFrame(const Duration(seconds: 30));
-    expect(log, equals([]));
-    expect(valueLog, equals([]));
+    expect(log, equals(<AnimationStatus>[]));
+    expect(valueLog, equals(<AnimationStatus>[]));
     WidgetsBinding.instance.handleBeginFrame(const Duration(seconds: 40));
-    expect(log, equals([]));
-    expect(valueLog, equals([]));
+    expect(log, equals(<AnimationStatus>[]));
+    expect(valueLog, equals(<AnimationStatus>[]));
 
     controller.stop();
   });
@@ -118,15 +118,15 @@ void main() {
       });
 
     controller.reverse(from: 0.2);
-    expect(statusLog, equals([ AnimationStatus.reverse ]));
-    expect(valueLog, equals([ 0.2 ]));
+    expect(statusLog, equals(<AnimationStatus>[ AnimationStatus.reverse ]));
+    expect(valueLog, equals(<double>[ 0.2 ]));
     expect(controller.value, equals(0.2));
     statusLog.clear();
     valueLog.clear();
 
     controller.forward(from: 0.0);
-    expect(statusLog, equals([ AnimationStatus.dismissed, AnimationStatus.forward ]));
-    expect(valueLog, equals([ 0.0 ]));
+    expect(statusLog, equals(<AnimationStatus>[ AnimationStatus.dismissed, AnimationStatus.forward ]));
+    expect(valueLog, equals(<double>[ 0.0 ]));
     expect(controller.value, equals(0.0));
   });
 }
diff --git a/packages/flutter/test/cassowary/cassowary_test.dart b/packages/flutter/test/cassowary/cassowary_test.dart
index ac69187809..b7b5fccff8 100644
--- a/packages/flutter/test/cassowary/cassowary_test.dart
+++ b/packages/flutter/test/cassowary/cassowary_test.dart
@@ -210,7 +210,7 @@ void main() {
     expect((t * cm(2.0)).value, 40.0);
 
     // Expression
-    Expression e = new Expression([t], 0.0);
+    Expression e = new Expression(<Term>[t], 0.0);
     expect((e * cm(2.0)).value, 40.0);
   });
 
@@ -228,7 +228,7 @@ void main() {
     expect((t / cm(2.0)).value, 10.0);
 
     // Expression
-    Expression e = new Expression([t], 0.0);
+    Expression e = new Expression(<Term>[t], 0.0);
     expect((e / cm(2.0)).value, 10.0);
   });
 
@@ -298,7 +298,7 @@ void main() {
     expect(c3.expression.constant, 0.0);
 
     // Expression
-    Constraint c4 = e >= new Expression([new Term(new Variable(2.0), 1.0)], 20.0);
+    Constraint c4 = e >= new Expression(<Term>[new Term(new Variable(2.0), 1.0)], 20.0);
     expect(c4 is Constraint, true);
     expect(c4.expression.terms.length, 3);
     expect(c4.expression.constant, -20.0);
@@ -325,8 +325,8 @@ void main() {
     expect(c3.expression.constant, 0.0);
 
     // Expression
-    Expression e = new Expression([t], 0.0);
-    Constraint c4 = e >= new Expression([new Term(new Variable(2.0), 1.0)], 20.0);
+    Expression e = new Expression(<Term>[t], 0.0);
+    Constraint c4 = e >= new Expression(<Term>[new Term(new Variable(2.0), 1.0)], 20.0);
     expect(c4 is Constraint, true);
     expect(c4.expression.terms.length, 2);
     expect(c4.expression.constant, -20.0);
@@ -352,7 +352,7 @@ void main() {
     ConstantMember c = cm(10.0);
     Param v = new Param(c.value);
     Term t = new Term(v.variable, 1.0);
-    Expression e = new Expression([t], 0.0);
+    Expression e = new Expression(<Term>[t], 0.0);
 
     // Constant
     expect((c * cm(10.0)).value, 100);
@@ -383,7 +383,7 @@ void main() {
     ConstantMember c = cm(10.0);
     Param v = new Param(c.value);
     Term t = new Term(v.variable, 1.0);
-    Expression e = new Expression([t], 0.0);
+    Expression e = new Expression(<Term>[t], 0.0);
 
     expect((c * c).value, 100);
     expect(() => v * v, throwsA(new isInstanceOf<ParserException>()));
@@ -457,13 +457,13 @@ void main() {
 
     Constraint c = (left >= cm(0.0));
 
-    expect(s.addConstraints([
+    expect(s.addConstraints(<Constraint>[
       (left + right).equals(cm(2.0) * mid),
       (right - left >= cm(100.0)),
       c
     ]), Result.success);
 
-    expect(s.addConstraints([(right >= cm(-20.0)), c]),
+    expect(s.addConstraints(<Constraint>[(right >= cm(-20.0)), c]),
         Result.duplicateConstraint);
   });
 
@@ -599,7 +599,7 @@ void main() {
     Param mid = new Param(0.0);
 
     expect(s.addEditVariables(
-         [left.variable, right.variable, mid.variable], 999.0), Result.success);
+         <Variable>[left.variable, right.variable, mid.variable], 999.0), Result.success);
   });
 
   test('bulk_remove_constraints_and_variables', () {
@@ -610,16 +610,16 @@ void main() {
     Param mid = new Param(0.0);
 
     expect(s.addEditVariables(
-         [left.variable, right.variable, mid.variable], 999.0), Result.success);
+         <Variable>[left.variable, right.variable, mid.variable], 999.0), Result.success);
 
     Constraint c1 = left <= mid;
     Constraint c2 = mid <= right;
 
-    expect(s.addConstraints([c1, c2]), Result.success);
+    expect(s.addConstraints(<Constraint>[c1, c2]), Result.success);
 
-    expect(s.removeConstraints([c1, c2]), Result.success);
+    expect(s.removeConstraints(<Constraint>[c1, c2]), Result.success);
 
     expect(s.removeEditVariables(
-                [left.variable, right.variable, mid.variable]), Result.success);
+                <Variable>[left.variable, right.variable, mid.variable]), Result.success);
   });
 }
diff --git a/packages/flutter/test/widget/clip_test.dart b/packages/flutter/test/widget/clip_test.dart
index 2638f1a60f..a1c6ca2ab3 100644
--- a/packages/flutter/test/widget/clip_test.dart
+++ b/packages/flutter/test/widget/clip_test.dart
@@ -31,14 +31,14 @@ void main() {
         )
       )
     );
-    expect(log, equals(['getClip']));
+    expect(log, equals(<String>['getClip']));
 
     tester.tapAt(new Point(10.0, 10.0));
-    expect(log, equals(['getClip']));
+    expect(log, equals(<String>['getClip']));
     log.clear();
 
     tester.tapAt(new Point(100.0, 100.0));
-    expect(log, equals(['tap']));
+    expect(log, equals(<String>['tap']));
     log.clear();
   });
 
@@ -52,14 +52,14 @@ void main() {
         )
       )
     );
-    expect(log, equals([]));
+    expect(log, equals(<String>[]));
 
     tester.tapAt(new Point(10.0, 10.0));
-    expect(log, equals([]));
+    expect(log, equals(<String>[]));
     log.clear();
 
     tester.tapAt(new Point(400.0, 300.0));
-    expect(log, equals(['tap']));
+    expect(log, equals(<String>['tap']));
     log.clear();
   });
 }
diff --git a/packages/flutter/test/widget/custom_paint_test.dart b/packages/flutter/test/widget/custom_paint_test.dart
index d4df472612..2fc26a9c51 100644
--- a/packages/flutter/test/widget/custom_paint_test.dart
+++ b/packages/flutter/test/widget/custom_paint_test.dart
@@ -41,6 +41,6 @@ void main() {
       )
     ));
 
-    expect(log, equals(['background', 'child', 'foreground']));
+    expect(log, equals(<String>['background', 'child', 'foreground']));
   });
 }
diff --git a/packages/flutter/test/widget/dismissable_test.dart b/packages/flutter/test/widget/dismissable_test.dart
index 836d0bcce3..a414333294 100644
--- a/packages/flutter/test/widget/dismissable_test.dart
+++ b/packages/flutter/test/widget/dismissable_test.dart
@@ -139,12 +139,12 @@ void main() {
 
     dismissItem(tester, 0, gestureDirection: DismissDirection.startToEnd);
     expect(find.text('0'), findsNothing);
-    expect(dismissedItems, equals([0]));
+    expect(dismissedItems, equals(<int>[0]));
     expect(reportedDismissDirection, DismissDirection.startToEnd);
 
     dismissItem(tester, 1, gestureDirection: DismissDirection.endToStart);
     expect(find.text('1'), findsNothing);
-    expect(dismissedItems, equals([0, 1]));
+    expect(dismissedItems, equals(<int>[0, 1]));
     expect(reportedDismissDirection, DismissDirection.endToStart);
   });
 
@@ -157,12 +157,12 @@ void main() {
 
     dismissItem(tester, 0, gestureDirection: DismissDirection.up);
     expect(find.text('0'), findsNothing);
-    expect(dismissedItems, equals([0]));
+    expect(dismissedItems, equals(<int>[0]));
     expect(reportedDismissDirection, DismissDirection.up);
 
     dismissItem(tester, 1, gestureDirection: DismissDirection.down);
     expect(find.text('1'), findsNothing);
-    expect(dismissedItems, equals([0, 1]));
+    expect(dismissedItems, equals(<int>[0, 1]));
     expect(reportedDismissDirection, DismissDirection.down);
   });
 
@@ -180,7 +180,7 @@ void main() {
 
     dismissItem(tester, 0, gestureDirection: DismissDirection.endToStart);
     expect(find.text('0'), findsNothing);
-    expect(dismissedItems, equals([0]));
+    expect(dismissedItems, equals(<int>[0]));
     dismissItem(tester, 1, gestureDirection: DismissDirection.endToStart);
   });
 
@@ -197,7 +197,7 @@ void main() {
 
     dismissItem(tester, 0, gestureDirection: DismissDirection.startToEnd);
     expect(find.text('0'), findsNothing);
-    expect(dismissedItems, equals([0]));
+    expect(dismissedItems, equals(<int>[0]));
   });
 
   testWidgets('drag-up with DismissDirection.up triggers dismiss', (WidgetTester tester) {
@@ -213,7 +213,7 @@ void main() {
 
     dismissItem(tester, 0, gestureDirection: DismissDirection.up);
     expect(find.text('0'), findsNothing);
-    expect(dismissedItems, equals([0]));
+    expect(dismissedItems, equals(<int>[0]));
   });
 
   testWidgets('drag-down with DismissDirection.down triggers dismiss', (WidgetTester tester) {
@@ -229,7 +229,7 @@ void main() {
 
     dismissItem(tester, 0, gestureDirection: DismissDirection.down);
     expect(find.text('0'), findsNothing);
-    expect(dismissedItems, equals([0]));
+    expect(dismissedItems, equals(<int>[0]));
   });
 
   // This is a regression test for an fn2 bug where dragging a card caused an
diff --git a/packages/flutter/test/widget/flow_test.dart b/packages/flutter/test/widget/flow_test.dart
index 4306bcedda..45c8ac3b8d 100644
--- a/packages/flutter/test/widget/flow_test.dart
+++ b/packages/flutter/test/widget/flow_test.dart
@@ -68,21 +68,21 @@ void main() {
     );
 
     tester.tap(find.text('0'));
-    expect(log, equals([0]));
+    expect(log, equals(<int>[0]));
     tester.tap(find.text('1'));
-    expect(log, equals([0, 1]));
+    expect(log, equals(<int>[0, 1]));
     tester.tap(find.text('2'));
-    expect(log, equals([0, 1, 2]));
+    expect(log, equals(<int>[0, 1, 2]));
 
     log.clear();
     tester.tapAt(new Point(20.0, 90.0));
-    expect(log, equals([1]));
+    expect(log, equals(<int>[1]));
 
     startOffset.value = 50.0;
     tester.pump();
 
     log.clear();
     tester.tapAt(new Point(20.0, 90.0));
-    expect(log, equals([0]));
+    expect(log, equals(<int>[0]));
   });
 }
diff --git a/packages/flutter/test/widget/focus_test.dart b/packages/flutter/test/widget/focus_test.dart
index 919db2380a..55e8959bb1 100644
--- a/packages/flutter/test/widget/focus_test.dart
+++ b/packages/flutter/test/widget/focus_test.dart
@@ -121,7 +121,7 @@ void main() {
       new Focus(
         key: keyParentFocus,
         child: new Row(
-          children: [
+          children: <Widget>[
             new TestFocusable(
               key: keyA,
               no: 'a',
@@ -148,7 +148,7 @@ void main() {
       new Focus(
         key: keyParentFocus,
         child: new Row(
-          children: [
+          children: <Widget>[
             new TestFocusable(
               key: keyA,
               no: 'a',
@@ -174,7 +174,7 @@ void main() {
       new Focus(
         key: keyParentFocus,
         child: new Row(
-          children: [
+          children: <Widget>[
             new TestFocusable(
               key: keyA,
               no: 'a',
diff --git a/packages/flutter/test/widget/inherited_test.dart b/packages/flutter/test/widget/inherited_test.dart
index 782b9af252..fc06580a64 100644
--- a/packages/flutter/test/widget/inherited_test.dart
+++ b/packages/flutter/test/widget/inherited_test.dart
@@ -44,17 +44,17 @@ void main() {
     TestInherited first = new TestInherited(child: builder);
     tester.pumpWidget(first);
 
-    expect(log, equals([first]));
+    expect(log, equals(<TestInherited>[first]));
 
     TestInherited second = new TestInherited(child: builder, shouldNotify: false);
     tester.pumpWidget(second);
 
-    expect(log, equals([first]));
+    expect(log, equals(<TestInherited>[first]));
 
     TestInherited third = new TestInherited(child: builder, shouldNotify: true);
     tester.pumpWidget(third);
 
-    expect(log, equals([first, third]));
+    expect(log, equals(<TestInherited>[first, third]));
   });
 
   testWidgets('Update inherited when reparenting state', (WidgetTester tester) {
@@ -79,12 +79,12 @@ void main() {
     TestInherited first = build();
     tester.pumpWidget(first);
 
-    expect(log, equals([first]));
+    expect(log, equals(<TestInherited>[first]));
 
     TestInherited second = build();
     tester.pumpWidget(second);
 
-    expect(log, equals([first, second]));
+    expect(log, equals(<TestInherited>[first, second]));
   });
 
   testWidgets('Update inherited when removing node', (WidgetTester tester) {
diff --git a/packages/flutter/test/widget/lazy_block_viewport_test.dart b/packages/flutter/test/widget/lazy_block_viewport_test.dart
index 6550ba43cc..22576fc8e9 100644
--- a/packages/flutter/test/widget/lazy_block_viewport_test.dart
+++ b/packages/flutter/test/widget/lazy_block_viewport_test.dart
@@ -37,19 +37,19 @@ void main() {
 
     FlipWidgetState testWidget = tester.state(find.byType(FlipWidget));
 
-    expect(callbackTracker, equals([0, 1, 2, 3, 4, 5]));
+    expect(callbackTracker, equals(<int>[0, 1, 2, 3, 4, 5]));
 
     callbackTracker.clear();
     testWidget.flip();
     tester.pump();
 
-    expect(callbackTracker, equals([]));
+    expect(callbackTracker, equals(<int>[]));
 
     callbackTracker.clear();
     testWidget.flip();
     tester.pump();
 
-    expect(callbackTracker, equals([0, 1, 2, 3, 4, 5]));
+    expect(callbackTracker, equals(<int>[0, 1, 2, 3, 4, 5]));
   });
 
   testWidgets('LazyBlockViewport vertical', (WidgetTester tester) {
@@ -84,7 +84,7 @@ void main() {
     tester.pumpWidget(builder());
 
     // 0 is built to find its height
-    expect(callbackTracker, equals([0, 1, 2, 3, 4]));
+    expect(callbackTracker, equals(<int>[0, 1, 2, 3, 4]));
     callbackTracker.clear();
 
     offset = 400.0; // now only 3 should fit, numbered 2-4.
@@ -92,13 +92,13 @@ void main() {
     tester.pumpWidget(builder());
 
     // We build all the children to find their new size.
-    expect(callbackTracker, equals([0, 1, 2, 3, 4]));
+    expect(callbackTracker, equals(<int>[0, 1, 2, 3, 4]));
     callbackTracker.clear();
 
     tester.pumpWidget(builder());
 
     // 0 isn't built because they're not visible.
-    expect(callbackTracker, equals([1, 2, 3, 4]));
+    expect(callbackTracker, equals(<int>[1, 2, 3, 4]));
     callbackTracker.clear();
   });
 
@@ -135,7 +135,7 @@ void main() {
     tester.pumpWidget(builder());
 
     // 0 is built to find its width
-    expect(callbackTracker, equals([0, 1, 2, 3, 4, 5]));
+    expect(callbackTracker, equals(<int>[0, 1, 2, 3, 4, 5]));
 
     callbackTracker.clear();
 
@@ -144,13 +144,13 @@ void main() {
     tester.pumpWidget(builder());
 
     // We build all the children to find their new size.
-    expect(callbackTracker, equals([0, 1, 2, 3, 4, 5]));
+    expect(callbackTracker, equals(<int>[0, 1, 2, 3, 4, 5]));
     callbackTracker.clear();
 
     tester.pumpWidget(builder());
 
     // 0 isn't built because they're not visible.
-    expect(callbackTracker, equals([1, 2, 3, 4, 5]));
+    expect(callbackTracker, equals(<int>[1, 2, 3, 4, 5]));
     callbackTracker.clear();
   });
 
@@ -182,18 +182,18 @@ void main() {
 
     tester.pumpWidget(builder());
 
-    expect(callbackTracker, equals([0, 1, 2]));
+    expect(callbackTracker, equals(<int>[0, 1, 2]));
     callbackTracker.clear();
     tester.allWidgets.forEach(collectText);
-    expect(text, equals(['0', '1', '2']));
+    expect(text, equals(<String>['0', '1', '2']));
     text.clear();
 
     tester.pumpWidget(builder());
 
-    expect(callbackTracker, equals([0, 1, 2]));
+    expect(callbackTracker, equals(<int>[0, 1, 2]));
     callbackTracker.clear();
     tester.allWidgets.forEach(collectText);
-    expect(text, equals(['0', '1', '2']));
+    expect(text, equals(<String>['0', '1', '2']));
     text.clear();
   });
 
diff --git a/packages/flutter/test/widget/listener_test.dart b/packages/flutter/test/widget/listener_test.dart
index 8ce725b239..64784e47b0 100644
--- a/packages/flutter/test/widget/listener_test.dart
+++ b/packages/flutter/test/widget/listener_test.dart
@@ -34,7 +34,7 @@ void main() {
 
     tester.tap(find.text('X'));
 
-    expect(log, equals([
+    expect(log, equals(<String>[
       'bottom',
       'middle',
       'top',
diff --git a/packages/flutter/test/widget/overflow_box_test.dart b/packages/flutter/test/widget/overflow_box_test.dart
index 582a80458e..a75024c273 100644
--- a/packages/flutter/test/widget/overflow_box_test.dart
+++ b/packages/flutter/test/widget/overflow_box_test.dart
@@ -39,7 +39,7 @@ void main() {
       minHeight: 3.0,
       maxHeight: 4.0
     ).debugFillDescription(description);
-    expect(description, [
+    expect(description, <String>[
       'alignment: FractionalOffset(0.5, 0.5)',
       'minWidth: 1.0',
       'maxWidth: 2.0',
diff --git a/packages/flutter/test/widget/positioned_test.dart b/packages/flutter/test/widget/positioned_test.dart
index e5e78d5eda..f77c2574f2 100644
--- a/packages/flutter/test/widget/positioned_test.dart
+++ b/packages/flutter/test/widget/positioned_test.dart
@@ -66,8 +66,8 @@ void main() {
     tester.pump(const Duration(seconds: 5)); // t=10
     recordMetrics();
 
-    expect(sizes, equals([const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0)]));
-    expect(positions, equals([const Offset(10.0, 10.0), const Offset(10.0, 10.0), const Offset(17.0, 17.0), const Offset(24.0, 24.0), const Offset(45.0, 45.0), const Offset(80.0, 80.0)]));
+    expect(sizes, equals(<Size>[const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0), const Size(10.0, 10.0)]));
+    expect(positions, equals(<Offset>[const Offset(10.0, 10.0), const Offset(10.0, 10.0), const Offset(17.0, 17.0), const Offset(24.0, 24.0), const Offset(45.0, 45.0), const Offset(80.0, 80.0)]));
 
     controller.stop();
   });
diff --git a/packages/flutter/test/widget/reparent_state_test.dart b/packages/flutter/test/widget/reparent_state_test.dart
index bdc0a16208..73cd4e8fee 100644
--- a/packages/flutter/test/widget/reparent_state_test.dart
+++ b/packages/flutter/test/widget/reparent_state_test.dart
@@ -316,13 +316,13 @@ void main() {
       new Container(key: new UniqueKey(), child: logger)
     );
 
-    expect(log, equals(['build']));
+    expect(log, equals(<String>['build']));
 
     tester.pumpWidget(
       new Container(key: new UniqueKey(), child: logger)
     );
 
-    expect(log, equals(['build', 'deactivate', 'build']));
+    expect(log, equals(<String>['build', 'deactivate', 'build']));
     log.clear();
 
     tester.pump();
diff --git a/packages/flutter/test/widget/rotated_box_test.dart b/packages/flutter/test/widget/rotated_box_test.dart
index 87ecad55e9..bda2c695d9 100644
--- a/packages/flutter/test/widget/rotated_box_test.dart
+++ b/packages/flutter/test/widget/rotated_box_test.dart
@@ -46,11 +46,11 @@ void main() {
     expect(box.size.height, equals(175.0));
 
     tester.tapAt(new Point(420.0, 280.0));
-    expect(log, equals(['left']));
+    expect(log, equals(<String>['left']));
     log.clear();
 
     tester.tapAt(new Point(380.0, 320.0));
-    expect(log, equals(['right']));
+    expect(log, equals(<String>['right']));
     log.clear();
   });
 }
diff --git a/packages/flutter/test/widget/routes_test.dart b/packages/flutter/test/widget/routes_test.dart
index b7b7ddcd75..0f88253e02 100644
--- a/packages/flutter/test/widget/routes_test.dart
+++ b/packages/flutter/test/widget/routes_test.dart
@@ -102,7 +102,7 @@ void main() {
       host,
       (NavigatorTransaction transaction) {
       },
-      [
+      <String>[
         'initial: install',
         'initial: didPush',
         'initial: didChangeNext null',
@@ -115,7 +115,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.push(second = new TestRoute('second'));
       },
-      [
+      <String>[
         'second: install',
         'second: didPush',
         'second: didChangeNext null',
@@ -128,7 +128,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.push(new TestRoute('third'));
       },
-      [
+      <String>[
         'third: install',
         'third: didPush',
         'third: didChangeNext null',
@@ -141,7 +141,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.replace(oldRoute: second, newRoute: new TestRoute('two'));
       },
-      [
+      <String>[
         'two: install',
         'two: didReplace second',
         'two: didChangeNext third',
@@ -155,7 +155,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.pop('hello');
       },
-      [
+      <String>[
         'third: didPop hello',
         'third: dispose',
         'two: didPopNext third',
@@ -167,14 +167,14 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.pop('good bye');
       },
-      [
+      <String>[
         'two: didPop good bye',
         'two: dispose',
         'initial: didPopNext two',
       ]
     );
     tester.pumpWidget(new Container());
-    expect(results, equals(['initial: dispose']));
+    expect(results, equals(<String>['initial: dispose']));
     expect(routes.isEmpty, isTrue);
     results.clear();
   });
@@ -191,7 +191,7 @@ void main() {
       host,
       (NavigatorTransaction transaction) {
       },
-      [
+      <String>[
         'first: install',
         'first: didPush',
         'first: didChangeNext null',
@@ -204,7 +204,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.push(second = new TestRoute('second'));
       },
-      [
+      <String>[
         'second: install',
         'second: didPush',
         'second: didChangeNext null',
@@ -217,7 +217,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.push(new TestRoute('third'));
       },
-      [
+      <String>[
         'third: install',
         'third: didPush',
         'third: didChangeNext null',
@@ -230,7 +230,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.removeRouteBefore(second);
       },
-      [
+      <String>[
         'first: dispose',
       ]
     );
@@ -240,7 +240,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.pop('good bye');
       },
-      [
+      <String>[
         'third: didPop good bye',
         'third: dispose',
         'second: didPopNext third',
@@ -252,7 +252,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.push(new TestRoute('three'));
       },
-      [
+      <String>[
         'three: install',
         'three: didPush',
         'three: didChangeNext null',
@@ -266,7 +266,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.push(four = new TestRoute('four'));
       },
-      [
+      <String>[
         'four: install',
         'four: didPush',
         'four: didChangeNext null',
@@ -279,7 +279,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.removeRouteBefore(four);
       },
-      [
+      <String>[
         'second: didChangeNext four',
         'three: dispose',
       ]
@@ -290,14 +290,14 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.pop('the end');
       },
-      [
+      <String>[
         'four: didPop the end',
         'four: dispose',
         'second: didPopNext four',
       ]
     );
     tester.pumpWidget(new Container());
-    expect(results, equals(['second: dispose']));
+    expect(results, equals(<String>['second: dispose']));
     expect(routes.isEmpty, isTrue);
     results.clear();
   });
@@ -314,7 +314,7 @@ void main() {
       host,
       (NavigatorTransaction transaction) {
       },
-      [
+      <String>[
         'A: install',
         'A: didPush',
         'A: didChangeNext null',
@@ -326,7 +326,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.push(new TestRoute('B'));
       },
-      [
+      <String>[
         'B: install',
         'B: didPush',
         'B: didChangeNext null',
@@ -340,7 +340,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.push(routeC = new TestRoute('C'));
       },
-      [
+      <String>[
         'C: install',
         'C: didPush',
         'C: didChangeNext null',
@@ -354,7 +354,7 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.replaceRouteBefore(anchorRoute: routeC, newRoute: routeB = new TestRoute('b'));
       },
-      [
+      <String>[
         'b: install',
         'b: didReplace B',
         'b: didChangeNext C',
@@ -368,14 +368,14 @@ void main() {
       (NavigatorTransaction transaction) {
         transaction.popUntil(routeB);
       },
-      [
+      <String>[
         'C: didPop null',
         'C: dispose',
         'b: didPopNext C',
       ]
     );
     tester.pumpWidget(new Container());
-    expect(results, equals(['A: dispose', 'b: dispose']));
+    expect(results, equals(<String>['A: dispose', 'b: dispose']));
     expect(routes.isEmpty, isTrue);
     results.clear();
   });
diff --git a/packages/flutter/test/widget/scroll_events_test.dart b/packages/flutter/test/widget/scroll_events_test.dart
index 827852d3ec..1f6ba413e8 100644
--- a/packages/flutter/test/widget/scroll_events_test.dart
+++ b/packages/flutter/test/widget/scroll_events_test.dart
@@ -27,19 +27,19 @@ void main() {
     List<String> log = <String>[];
     tester.pumpWidget(_buildScroller(log: log));
 
-    expect(log, equals([]));
+    expect(log, equals(<String>[]));
     TestGesture gesture = tester.startGesture(new Point(100.0, 100.0));
-    expect(log, equals(['scrollstart']));
+    expect(log, equals(<String>['scrollstart']));
     tester.pump(const Duration(seconds: 1));
-    expect(log, equals(['scrollstart']));
+    expect(log, equals(<String>['scrollstart']));
     gesture.moveBy(new Offset(-10.0, -10.0));
-    expect(log, equals(['scrollstart', 'scroll']));
+    expect(log, equals(<String>['scrollstart', 'scroll']));
     tester.pump(const Duration(seconds: 1));
-    expect(log, equals(['scrollstart', 'scroll']));
+    expect(log, equals(<String>['scrollstart', 'scroll']));
     gesture.up();
-    expect(log, equals(['scrollstart', 'scroll']));
+    expect(log, equals(<String>['scrollstart', 'scroll']));
     tester.pump(const Duration(seconds: 1));
-    expect(log, equals(['scrollstart', 'scroll', 'scrollend']));
+    expect(log, equals(<String>['scrollstart', 'scroll', 'scrollend']));
   });
 
   testWidgets('Scroll scrollTo animation', (WidgetTester tester) {
@@ -47,15 +47,15 @@ void main() {
     List<String> log = <String>[];
     tester.pumpWidget(_buildScroller(key: scrollKey, log: log));
 
-    expect(log, equals([]));
+    expect(log, equals(<String>[]));
     scrollKey.currentState.scrollTo(100.0, duration: const Duration(seconds: 1));
-    expect(log, equals(['scrollstart']));
+    expect(log, equals(<String>['scrollstart']));
     tester.pump(const Duration(milliseconds: 100));
-    expect(log, equals(['scrollstart']));
+    expect(log, equals(<String>['scrollstart']));
     tester.pump(const Duration(milliseconds: 100));
-    expect(log, equals(['scrollstart', 'scroll']));
+    expect(log, equals(<String>['scrollstart', 'scroll']));
     tester.pump(const Duration(milliseconds: 1500));
-    expect(log, equals(['scrollstart', 'scroll', 'scroll', 'scrollend']));
+    expect(log, equals(<String>['scrollstart', 'scroll', 'scroll', 'scrollend']));
   });
 
   testWidgets('Scroll scrollTo no animation', (WidgetTester tester) {
@@ -63,9 +63,9 @@ void main() {
     List<String> log = <String>[];
     tester.pumpWidget(_buildScroller(key: scrollKey, log: log));
 
-    expect(log, equals([]));
+    expect(log, equals(<String>[]));
     scrollKey.currentState.scrollTo(100.0);
-    expect(log, equals(['scrollstart', 'scroll', 'scrollend']));
+    expect(log, equals(<String>['scrollstart', 'scroll', 'scrollend']));
   });
 
   testWidgets('Scroll during animation', (WidgetTester tester) {
@@ -73,19 +73,19 @@ void main() {
     List<String> log = <String>[];
     tester.pumpWidget(_buildScroller(key: scrollKey, log: log));
 
-    expect(log, equals([]));
+    expect(log, equals(<String>[]));
     scrollKey.currentState.scrollTo(100.0, duration: const Duration(seconds: 1));
-    expect(log, equals(['scrollstart']));
+    expect(log, equals(<String>['scrollstart']));
     tester.pump(const Duration(milliseconds: 100));
-    expect(log, equals(['scrollstart']));
+    expect(log, equals(<String>['scrollstart']));
     tester.pump(const Duration(milliseconds: 100));
-    expect(log, equals(['scrollstart', 'scroll']));
+    expect(log, equals(<String>['scrollstart', 'scroll']));
     scrollKey.currentState.scrollTo(100.0);
-    expect(log, equals(['scrollstart', 'scroll', 'scroll']));
+    expect(log, equals(<String>['scrollstart', 'scroll', 'scroll']));
     tester.pump(const Duration(milliseconds: 100));
-    expect(log, equals(['scrollstart', 'scroll', 'scroll', 'scrollend']));
+    expect(log, equals(<String>['scrollstart', 'scroll', 'scroll', 'scrollend']));
     tester.pump(const Duration(milliseconds: 1500));
-    expect(log, equals(['scrollstart', 'scroll', 'scroll', 'scrollend']));
+    expect(log, equals(<String>['scrollstart', 'scroll', 'scroll', 'scrollend']));
   });
 
   testWidgets('Scroll during animation', (WidgetTester tester) {
@@ -93,19 +93,19 @@ void main() {
     List<String> log = <String>[];
     tester.pumpWidget(_buildScroller(key: scrollKey, log: log));
 
-    expect(log, equals([]));
+    expect(log, equals(<String>[]));
     scrollKey.currentState.scrollTo(100.0, duration: const Duration(seconds: 1));
-    expect(log, equals(['scrollstart']));
+    expect(log, equals(<String>['scrollstart']));
     tester.pump(const Duration(milliseconds: 100));
-    expect(log, equals(['scrollstart']));
+    expect(log, equals(<String>['scrollstart']));
     tester.pump(const Duration(milliseconds: 100));
-    expect(log, equals(['scrollstart', 'scroll']));
+    expect(log, equals(<String>['scrollstart', 'scroll']));
     scrollKey.currentState.scrollTo(100.0, duration: const Duration(seconds: 1));
-    expect(log, equals(['scrollstart', 'scroll']));
+    expect(log, equals(<String>['scrollstart', 'scroll']));
     tester.pump(const Duration(milliseconds: 100));
-    expect(log, equals(['scrollstart', 'scroll']));
+    expect(log, equals(<String>['scrollstart', 'scroll']));
     tester.pump(const Duration(milliseconds: 1500));
-    expect(log, equals(['scrollstart', 'scroll', 'scroll', 'scrollend']));
+    expect(log, equals(<String>['scrollstart', 'scroll', 'scroll', 'scrollend']));
   });
 
   testWidgets('fling, fling generates two start/end pairs', (WidgetTester tester) {
@@ -113,18 +113,18 @@ void main() {
     List<String> log = <String>[];
     tester.pumpWidget(_buildScroller(key: scrollKey, log: log));
 
-    expect(log, equals([]));
+    expect(log, equals(<String>[]));
     tester.flingFrom(new Point(100.0, 100.0), new Offset(-50.0, -50.0), 500.0);
     tester.pump(new Duration(seconds: 1));
     log.removeWhere((String value) => value == 'scroll');
-    expect(log, equals(['scrollstart']));
+    expect(log, equals(<String>['scrollstart']));
     tester.flingFrom(new Point(100.0, 100.0), new Offset(-50.0, -50.0), 500.0);
     log.removeWhere((String value) => value == 'scroll');
-    expect(log, equals(['scrollstart', 'scrollend', 'scrollstart']));
+    expect(log, equals(<String>['scrollstart', 'scrollend', 'scrollstart']));
     tester.pump(new Duration(seconds: 1));
     tester.pump(new Duration(seconds: 1));
     log.removeWhere((String value) => value == 'scroll');
-    expect(log, equals(['scrollstart', 'scrollend', 'scrollstart', 'scrollend']));
+    expect(log, equals(<String>['scrollstart', 'scrollend', 'scrollstart', 'scrollend']));
   });
 
   testWidgets('fling up ends', (WidgetTester tester) {
@@ -132,7 +132,7 @@ void main() {
     List<String> log = <String>[];
     tester.pumpWidget(_buildScroller(key: scrollKey, log: log));
 
-    expect(log, equals([]));
+    expect(log, equals(<String>[]));
     tester.flingFrom(new Point(100.0, 100.0), new Offset(50.0, 50.0), 500.0);
     tester.pump(new Duration(seconds: 1));
     tester.pump(new Duration(seconds: 1));
diff --git a/packages/flutter/test/widget/scrollable_lazy_list_test.dart b/packages/flutter/test/widget/scrollable_lazy_list_test.dart
index 4962bdbadd..c22b1ae999 100644
--- a/packages/flutter/test/widget/scrollable_lazy_list_test.dart
+++ b/packages/flutter/test/widget/scrollable_lazy_list_test.dart
@@ -40,19 +40,19 @@ void main() {
 
     FlipWidgetState testWidget = tester.state(find.byType(FlipWidget));
 
-    expect(callbackTracker, equals([0, 1, 2, 3, 4, 5]));
+    expect(callbackTracker, equals(<int>[0, 1, 2, 3, 4, 5]));
 
     callbackTracker.clear();
     testWidget.flip();
     tester.pump();
 
-    expect(callbackTracker, equals([]));
+    expect(callbackTracker, equals(<int>[]));
 
     callbackTracker.clear();
     testWidget.flip();
     tester.pump();
 
-    expect(callbackTracker, equals([0, 1, 2, 3, 4, 5]));
+    expect(callbackTracker, equals(<int>[0, 1, 2, 3, 4, 5]));
   });
 
   testWidgets('HomogeneousViewport vertical', (WidgetTester tester) {
@@ -89,7 +89,7 @@ void main() {
 
     tester.pumpWidget(testWidget);
 
-    expect(callbackTracker, equals([1, 2, 3, 4]));
+    expect(callbackTracker, equals(<int>[1, 2, 3, 4]));
 
     callbackTracker.clear();
 
@@ -98,7 +98,7 @@ void main() {
 
     tester.pumpWidget(testWidget);
 
-    expect(callbackTracker, equals([2, 3, 4]));
+    expect(callbackTracker, equals(<int>[2, 3, 4]));
 
     callbackTracker.clear();
   });
@@ -138,7 +138,7 @@ void main() {
 
     tester.pumpWidget(testWidget);
 
-    expect(callbackTracker, equals([1, 2, 3, 4, 5]));
+    expect(callbackTracker, equals(<int>[1, 2, 3, 4, 5]));
 
     callbackTracker.clear();
 
@@ -147,7 +147,7 @@ void main() {
 
     tester.pumpWidget(testWidget);
 
-    expect(callbackTracker, equals([2, 3, 4, 5]));
+    expect(callbackTracker, equals(<int>[2, 3, 4, 5]));
 
     callbackTracker.clear();
   });
@@ -177,22 +177,22 @@ void main() {
     );
 
     tester.pumpWidget(testWidget);
-    expect(callbackTracker, equals([0, 1]));
+    expect(callbackTracker, equals(<int>[0, 1]));
     callbackTracker.clear();
 
     scrollableKey.currentState.scrollTo(150.0);
     tester.pumpWidget(testWidget);
-    expect(callbackTracker, equals([0, 1, 2]));
+    expect(callbackTracker, equals(<int>[0, 1, 2]));
     callbackTracker.clear();
 
     scrollableKey.currentState.scrollTo(600.0);
     tester.pumpWidget(testWidget);
-    expect(callbackTracker, equals([2, 3]));
+    expect(callbackTracker, equals(<int>[2, 3]));
     callbackTracker.clear();
 
     scrollableKey.currentState.scrollTo(750.0);
     tester.pumpWidget(testWidget);
-    expect(callbackTracker, equals([2, 3, 4]));
+    expect(callbackTracker, equals(<int>[2, 3, 4]));
     callbackTracker.clear();
   });
 
diff --git a/packages/flutter/test/widget/scrollable_list_hit_testing_test.dart b/packages/flutter/test/widget/scrollable_list_hit_testing_test.dart
index dbca5b7329..b2b31497e1 100644
--- a/packages/flutter/test/widget/scrollable_list_hit_testing_test.dart
+++ b/packages/flutter/test/widget/scrollable_list_hit_testing_test.dart
@@ -43,9 +43,9 @@ void main() {
     expect(find.text('3'), findsOneWidget);
     expect(find.text('4'), findsNothing);
     expect(find.text('5'), findsNothing);
-    expect(tapped, equals([]));
+    expect(tapped, equals(<int>[]));
     tester.tap(find.text('2'));
-    expect(tapped, equals([2]));
+    expect(tapped, equals(<int>[2]));
   });
 
   testWidgets('Tap item after scroll - vertical', (WidgetTester tester) {
@@ -81,11 +81,11 @@ void main() {
     expect(find.text('3'), findsOneWidget);
     expect(find.text('4'), findsNothing);
     expect(find.text('5'), findsNothing);
-    expect(tapped, equals([]));
+    expect(tapped, equals(<int>[]));
     tester.tap(find.text('1'));
-    expect(tapped, equals([1]));
+    expect(tapped, equals(<int>[1]));
     tester.tap(find.text('3'));
-    expect(tapped, equals([1])); // the center of the third item is off-screen so it shouldn't get hit
+    expect(tapped, equals(<int>[1])); // the center of the third item is off-screen so it shouldn't get hit
   });
 
   testWidgets('Padding scroll anchor start', (WidgetTester tester) {
@@ -107,17 +107,17 @@ void main() {
       )
     );
     tester.tapAt(new Point(200.0, 19.0));
-    expect(tapped, equals([]));
+    expect(tapped, equals(<int>[]));
     tester.tapAt(new Point(200.0, 21.0));
-    expect(tapped, equals([0]));
+    expect(tapped, equals(<int>[0]));
     tester.tapAt(new Point(4.0, 400.0));
-    expect(tapped, equals([0]));
+    expect(tapped, equals(<int>[0]));
     tester.tapAt(new Point(6.0, 400.0));
-    expect(tapped, equals([0, 1]));
+    expect(tapped, equals(<int>[0, 1]));
     tester.tapAt(new Point(800.0 - 14.0, 400.0));
-    expect(tapped, equals([0, 1]));
+    expect(tapped, equals(<int>[0, 1]));
     tester.tapAt(new Point(800.0 - 16.0, 400.0));
-    expect(tapped, equals([0, 1, 1]));
+    expect(tapped, equals(<int>[0, 1, 1]));
   });
 
   testWidgets('Padding scroll anchor end', (WidgetTester tester) {
@@ -140,16 +140,16 @@ void main() {
       )
     );
     tester.tapAt(new Point(200.0, 600.0 - 9.0));
-    expect(tapped, equals([]));
+    expect(tapped, equals(<int>[]));
     tester.tapAt(new Point(200.0, 600.0 - 11.0));
-    expect(tapped, equals([5]));
+    expect(tapped, equals(<int>[5]));
     tester.tapAt(new Point(4.0, 200.0));
-    expect(tapped, equals([5]));
+    expect(tapped, equals(<int>[5]));
     tester.tapAt(new Point(6.0, 200.0));
-    expect(tapped, equals([5, 4]));
+    expect(tapped, equals(<int>[5, 4]));
     tester.tapAt(new Point(800.0 - 14.0, 200.0));
-    expect(tapped, equals([5, 4]));
+    expect(tapped, equals(<int>[5, 4]));
     tester.tapAt(new Point(800.0 - 16.0, 200.0));
-    expect(tapped, equals([5, 4, 4]));
+    expect(tapped, equals(<int>[5, 4, 4]));
   });
 }
diff --git a/packages/flutter/test/widget/semantics_1_test.dart b/packages/flutter/test/widget/semantics_1_test.dart
index 83a0f20cb2..f7bf310f1d 100644
--- a/packages/flutter/test/widget/semantics_1_test.dart
+++ b/packages/flutter/test/widget/semantics_1_test.dart
@@ -134,7 +134,7 @@ void main() {
     expect(client.updates[0].children[1].flags.hasCheckedState, isFalse);
     expect(client.updates[0].children[1].flags.isChecked, isFalse);
     expect(client.updates[0].children[1].strings.label, equals('child2'));
-    expect(client.updates[0].children[1].geometry.transform, equals([1.0,0.0,0.0,0.0, 0.0,1.0,0.0,0.0, 0.0,0.0,1.0,0.0, 0.0,10.0,0.0,1.0]));
+    expect(client.updates[0].children[1].geometry.transform, equals(<double>[1.0,0.0,0.0,0.0, 0.0,1.0,0.0,0.0, 0.0,0.0,1.0,0.0, 0.0,10.0,0.0,1.0]));
     expect(client.updates[0].children[1].geometry.left, equals(0.0));
     expect(client.updates[0].children[1].geometry.top, equals(0.0));
     expect(client.updates[0].children[1].geometry.width, equals(800.0));
@@ -236,7 +236,7 @@ void main() {
     expect(client.updates[0].children[1].flags.hasCheckedState, isFalse);
     expect(client.updates[0].children[1].flags.isChecked, isFalse);
     expect(client.updates[0].children[1].strings.label, equals('child2'));
-    expect(client.updates[0].children[1].geometry.transform, equals([1.0,0.0,0.0,0.0, 0.0,1.0,0.0,0.0, 0.0,0.0,1.0,0.0, 0.0,10.0,0.0,1.0]));
+    expect(client.updates[0].children[1].geometry.transform, equals(<double>[1.0,0.0,0.0,0.0, 0.0,1.0,0.0,0.0, 0.0,0.0,1.0,0.0, 0.0,10.0,0.0,1.0]));
     expect(client.updates[0].children[1].geometry.left, equals(0.0));
     expect(client.updates[0].children[1].geometry.top, equals(0.0));
     expect(client.updates[0].children[1].geometry.width, equals(800.0));
diff --git a/packages/flutter/test/widget/semantics_2_test.dart b/packages/flutter/test/widget/semantics_2_test.dart
index 6761f34147..dcc089d134 100644
--- a/packages/flutter/test/widget/semantics_2_test.dart
+++ b/packages/flutter/test/widget/semantics_2_test.dart
@@ -74,7 +74,7 @@ void main() {
     expect(client.updates[0].children[1].flags.hasCheckedState, isFalse);
     expect(client.updates[0].children[1].flags.isChecked, isFalse);
     expect(client.updates[0].children[1].strings.label, equals('child2'));
-    expect(client.updates[0].children[1].geometry.transform, equals([1.0,0.0,0.0,0.0, 0.0,1.0,0.0,0.0, 0.0,0.0,1.0,0.0, 0.0,10.0,0.0,1.0]));
+    expect(client.updates[0].children[1].geometry.transform, equals(<double>[1.0,0.0,0.0,0.0, 0.0,1.0,0.0,0.0, 0.0,0.0,1.0,0.0, 0.0,10.0,0.0,1.0]));
     expect(client.updates[0].children[1].geometry.left, equals(0.0));
     expect(client.updates[0].children[1].geometry.top, equals(0.0));
     expect(client.updates[0].children[1].geometry.width, equals(800.0));
@@ -176,7 +176,7 @@ void main() {
     expect(client.updates[0].children[1].flags.hasCheckedState, isFalse);
     expect(client.updates[0].children[1].flags.isChecked, isFalse);
     expect(client.updates[0].children[1].strings.label, equals('child2'));
-    expect(client.updates[0].children[1].geometry.transform, equals([1.0,0.0,0.0,0.0, 0.0,1.0,0.0,0.0, 0.0,0.0,1.0,0.0, 0.0,10.0,0.0,1.0]));
+    expect(client.updates[0].children[1].geometry.transform, equals(<double>[1.0,0.0,0.0,0.0, 0.0,1.0,0.0,0.0, 0.0,0.0,1.0,0.0, 0.0,10.0,0.0,1.0]));
     expect(client.updates[0].children[1].geometry.left, equals(0.0));
     expect(client.updates[0].children[1].geometry.top, equals(0.0));
     expect(client.updates[0].children[1].geometry.width, equals(800.0));
diff --git a/packages/flutter/test/widget/stack_test.dart b/packages/flutter/test/widget/stack_test.dart
index e898144fb4..0a09739c53 100644
--- a/packages/flutter/test/widget/stack_test.dart
+++ b/packages/flutter/test/widget/stack_test.dart
@@ -155,13 +155,13 @@ void main() {
     expect(find.text('0'), findsOneWidget);
     expect(find.text('1'), findsOneWidget);
     expect(find.text('2'), findsOneWidget);
-    expect(itemsPainted, equals([0]));
+    expect(itemsPainted, equals(<int>[0]));
 
     tester.pumpWidget(buildFrame(1));
-    expect(itemsPainted, equals([1]));
+    expect(itemsPainted, equals(<int>[1]));
 
     tester.pumpWidget(buildFrame(2));
-    expect(itemsPainted, equals([2]));
+    expect(itemsPainted, equals(<int>[2]));
   });
 
   testWidgets('Can hit test an IndexedStack', (WidgetTester tester) {
@@ -180,12 +180,12 @@ void main() {
     tester.pumpWidget(buildFrame(0));
     expect(itemsTapped, isEmpty);
     tester.tap(find.byKey(key));
-    expect(itemsTapped, [0]);
+    expect(itemsTapped, <int>[0]);
 
     tester.pumpWidget(buildFrame(2));
     expect(itemsTapped, isEmpty);
     tester.tap(find.byKey(key));
-    expect(itemsTapped, [2]);
+    expect(itemsTapped, <int>[2]);
   });
 
   testWidgets('Can set width and height', (WidgetTester tester) {