Add stackTrace to AsyncSnapshot (#69507)
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creativecreatorormaybenot
GitHub
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0d7270ba0c
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85f0aea87e
@ -75,10 +75,11 @@ abstract class StreamBuilderBase<T, S> extends StatefulWidget {
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/// is combined with the new data item in the fold computation.
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S afterData(S current, T data);
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/// Returns an updated version of the [current] summary following an error.
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/// Returns an updated version of the [current] summary following an error
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/// with a stack trace.
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///
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/// The default implementation returns [current] as is.
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S afterError(S current, Object error) => current;
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S afterError(S current, Object error, StackTrace stackTrace) => current;
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/// Returns an updated version of the [current] summary following stream
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/// termination.
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@ -138,9 +139,9 @@ class _StreamBuilderBaseState<T, S> extends State<StreamBuilderBase<T, S>> {
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setState(() {
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_summary = widget.afterData(_summary, data);
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});
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}, onError: (Object error) {
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}, onError: (Object error, StackTrace stackTrace) {
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setState(() {
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_summary = widget.afterError(_summary, error);
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_summary = widget.afterError(_summary, error, stackTrace);
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});
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}, onDone: () {
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setState(() {
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@ -204,22 +205,31 @@ enum ConnectionState {
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@immutable
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class AsyncSnapshot<T> {
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/// Creates an [AsyncSnapshot] with the specified [connectionState],
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/// and optionally either [data] or [error] (but not both).
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const AsyncSnapshot._(this.connectionState, this.data, this.error)
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/// and optionally either [data] or [error] with an optional [stackTrace]
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/// (but not both data and error).
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const AsyncSnapshot._(this.connectionState, this.data, this.error, this.stackTrace)
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: assert(connectionState != null),
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assert(!(data != null && error != null));
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assert(!(data != null && error != null)),
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assert(stackTrace == null || error != null);
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/// Creates an [AsyncSnapshot] in [ConnectionState.none] with null data and error.
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const AsyncSnapshot.nothing() : this._(ConnectionState.none, null, null);
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const AsyncSnapshot.nothing() : this._(ConnectionState.none, null, null, null);
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/// Creates an [AsyncSnapshot] in [ConnectionState.waiting] with null data and error.
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const AsyncSnapshot.waiting() : this._(ConnectionState.waiting, null, null);
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const AsyncSnapshot.waiting() : this._(ConnectionState.waiting, null, null, null);
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/// Creates an [AsyncSnapshot] in the specified [state] and with the specified [data].
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const AsyncSnapshot.withData(ConnectionState state, T data): this._(state, data, null);
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const AsyncSnapshot.withData(ConnectionState state, T data): this._(state, data, null, null);
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/// Creates an [AsyncSnapshot] in the specified [state] and with the specified [error].
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const AsyncSnapshot.withError(ConnectionState state, Object error) : this._(state, null, error);
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/// Creates an [AsyncSnapshot] in the specified [state] with the specified [error]
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/// and a [stackTrace].
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///
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/// If no [stackTrace] is explicitly specified, [StackTrace.empty] will be used instead.
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const AsyncSnapshot.withError(
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ConnectionState state,
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Object error, [
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StackTrace stackTrace = StackTrace.empty,
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]) : this._(state, null, error, stackTrace);
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/// Current state of connection to the asynchronous computation.
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final ConnectionState connectionState;
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@ -254,11 +264,20 @@ class AsyncSnapshot<T> {
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/// If [data] is not null, this will be null.
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final Object? error;
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/// The latest stack trace object received by the asynchronous computation.
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///
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/// This will not be null iff [error] is not null. Consequently, [stackTrace]
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/// will be non-null when [hasError] is true.
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///
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/// However, even when not null, [stackTrace] might be empty. The stack trace
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/// is empty when there is an error but no stack trace has been provided.
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final StackTrace? stackTrace;
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/// Returns a snapshot like this one, but in the specified [state].
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///
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/// The [data] and [error] fields persist unmodified, even if the new state is
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/// [ConnectionState.none].
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AsyncSnapshot<T> inState(ConnectionState state) => AsyncSnapshot<T>._(state, data, error);
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/// The [data], [error], and [stackTrace] fields persist unmodified, even if
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/// the new state is [ConnectionState.none].
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AsyncSnapshot<T> inState(ConnectionState state) => AsyncSnapshot<T>._(state, data, error, stackTrace);
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/// Returns whether this snapshot contains a non-null [data] value.
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///
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@ -275,7 +294,7 @@ class AsyncSnapshot<T> {
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bool get hasError => error != null;
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@override
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String toString() => '${objectRuntimeType(this, 'AsyncSnapshot')}($connectionState, $data, $error)';
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String toString() => '${objectRuntimeType(this, 'AsyncSnapshot')}($connectionState, $data, $error, $stackTrace)';
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@override
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bool operator ==(Object other) {
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@ -284,7 +303,8 @@ class AsyncSnapshot<T> {
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return other is AsyncSnapshot<T>
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&& other.connectionState == connectionState
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&& other.data == data
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&& other.error == error;
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&& other.error == error
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&& other.stackTrace == stackTrace;
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}
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@override
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@ -318,12 +338,12 @@ typedef AsyncWidgetBuilder<T> = Widget Function(BuildContext context, AsyncSnaps
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/// of the following snapshots that includes the last one (the one with
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/// ConnectionState.done):
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///
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/// * `new AsyncSnapshot<int>.withData(ConnectionState.waiting, null)`
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/// * `new AsyncSnapshot<int>.withData(ConnectionState.active, 0)`
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/// * `new AsyncSnapshot<int>.withData(ConnectionState.active, 1)`
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/// * `AsyncSnapshot<int>.withData(ConnectionState.waiting, null)`
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/// * `AsyncSnapshot<int>.withData(ConnectionState.active, 0)`
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/// * `AsyncSnapshot<int>.withData(ConnectionState.active, 1)`
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/// * ...
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/// * `new AsyncSnapshot<int>.withData(ConnectionState.active, 9)`
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/// * `new AsyncSnapshot<int>.withData(ConnectionState.done, 9)`
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/// * `AsyncSnapshot<int>.withData(ConnectionState.active, 9)`
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/// * `AsyncSnapshot<int>.withData(ConnectionState.done, 9)`
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///
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/// The actual sequence of invocations of the [builder] depends on the relative
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/// timing of events produced by the stream and the build rate of the Flutter
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@ -332,15 +352,15 @@ typedef AsyncWidgetBuilder<T> = Widget Function(BuildContext context, AsyncSnaps
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/// Changing the [StreamBuilder] configuration to another stream during event
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/// generation introduces snapshot pairs of the form:
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///
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/// * `new AsyncSnapshot<int>.withData(ConnectionState.none, 5)`
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/// * `new AsyncSnapshot<int>.withData(ConnectionState.waiting, 5)`
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/// * `AsyncSnapshot<int>.withData(ConnectionState.none, 5)`
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/// * `AsyncSnapshot<int>.withData(ConnectionState.waiting, 5)`
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///
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/// The latter will be produced only when the new stream is non-null, and the
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/// former only when the old stream is non-null.
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///
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/// The stream may produce errors, resulting in snapshots of the form:
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///
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/// * `new AsyncSnapshot<int>.withError(ConnectionState.active, 'some error')`
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/// * `AsyncSnapshot<int>.withError(ConnectionState.active, 'some error', someStackTrace)`
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///
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/// The data and error fields of snapshots produced are only changed when the
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/// state is `ConnectionState.active`.
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@ -386,7 +406,11 @@ typedef AsyncWidgetBuilder<T> = Widget Function(BuildContext context, AsyncSnaps
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/// Padding(
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/// padding: const EdgeInsets.only(top: 16),
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/// child: Text('Error: ${snapshot.error}'),
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/// )
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/// ),
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/// Padding(
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/// padding: const EdgeInsets.only(top: 8),
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/// child: Text('Stack trace: ${snapshot.stackTrace}'),
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/// ),
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/// ];
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/// } else {
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/// switch (snapshot.connectionState) {
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@ -511,8 +535,8 @@ class StreamBuilder<T> extends StreamBuilderBase<T, AsyncSnapshot<T>> {
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}
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@override
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AsyncSnapshot<T> afterError(AsyncSnapshot<T> current, Object error) {
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return AsyncSnapshot<T>.withError(ConnectionState.active, error);
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AsyncSnapshot<T> afterError(AsyncSnapshot<T> current, Object error, StackTrace stackTrace) {
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return AsyncSnapshot<T>.withError(ConnectionState.active, error, stackTrace);
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}
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@override
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@ -559,14 +583,14 @@ class StreamBuilder<T> extends StreamBuilderBase<T, AsyncSnapshot<T>> {
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/// is null, the [builder] will be called with either both or only the latter of
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/// the following snapshots:
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///
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/// * `new AsyncSnapshot<String>.withData(ConnectionState.waiting, null)`
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/// * `new AsyncSnapshot<String>.withData(ConnectionState.done, 'some data')`
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/// * `AsyncSnapshot<String>.withData(ConnectionState.waiting, null)`
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/// * `AsyncSnapshot<String>.withData(ConnectionState.done, 'some data')`
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///
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/// If that same future instead completed with an error, the [builder] would be
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/// called with either both or only the latter of:
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///
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/// * `new AsyncSnapshot<String>.withData(ConnectionState.waiting, null)`
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/// * `new AsyncSnapshot<String>.withError(ConnectionState.done, 'some error')`
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/// * `AsyncSnapshot<String>.withData(ConnectionState.waiting, null)`
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/// * `AsyncSnapshot<String>.withError(ConnectionState.done, 'some error', someStackTrace)`
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///
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/// The initial snapshot data can be controlled by specifying [initialData]. You
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/// would use this facility to ensure that if the [builder] is invoked before
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@ -579,8 +603,8 @@ class StreamBuilder<T> extends StreamBuilderBase<T, AsyncSnapshot<T>> {
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/// old future has already completed successfully with data as above, changing
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/// configuration to a new future results in snapshot pairs of the form:
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///
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/// * `new AsyncSnapshot<String>.withData(ConnectionState.none, 'data of first future')`
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/// * `new AsyncSnapshot<String>.withData(ConnectionState.waiting, 'data of second future')`
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/// * `AsyncSnapshot<String>.withData(ConnectionState.none, 'data of first future')`
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/// * `AsyncSnapshot<String>.withData(ConnectionState.waiting, 'data of second future')`
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///
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/// In general, the latter will be produced only when the new future is
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/// non-null, and the former only when the old future is non-null.
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@ -768,10 +792,10 @@ class _FutureBuilderState<T> extends State<FutureBuilder<T>> {
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_snapshot = AsyncSnapshot<T>.withData(ConnectionState.done, data);
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});
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}
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}, onError: (Object error) {
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}, onError: (Object error, StackTrace stackTrace) {
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if (_activeCallbackIdentity == callbackIdentity) {
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setState(() {
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_snapshot = AsyncSnapshot<T>.withError(ConnectionState.done, error);
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_snapshot = AsyncSnapshot<T>.withError(ConnectionState.done, error, stackTrace);
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});
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}
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});
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@ -34,9 +34,20 @@ void main() {
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expect(const AsyncSnapshot<int>.nothing().connectionState, ConnectionState.none);
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expect(const AsyncSnapshot<int>.nothing().data, isNull);
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expect(const AsyncSnapshot<int>.nothing().error, isNull);
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expect(const AsyncSnapshot<int>.nothing().stackTrace, isNull);
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expect(const AsyncSnapshot<int>.waiting().connectionState, ConnectionState.waiting);
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expect(const AsyncSnapshot<int>.waiting().data, isNull);
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expect(const AsyncSnapshot<int>.waiting().error, isNull);
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expect(const AsyncSnapshot<int>.waiting().stackTrace, isNull);
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});
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test('withError uses empty stack trace if no stack trace is specified', () {
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// We need to store the error as a local variable in order for the
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// equality check on the error to be true.
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final Error error = Error();
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expect(
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AsyncSnapshot<int>.withError(ConnectionState.done, error),
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AsyncSnapshot<int>.withError(
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ConnectionState.done, error, StackTrace.empty));
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});
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});
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group('Async smoke tests', () {
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@ -67,12 +78,12 @@ void main() {
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await tester.pumpWidget(FutureBuilder<String>(
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key: key, future: null, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null, null)'), findsOneWidget);
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final Completer<String> completer = Completer<String>();
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await tester.pumpWidget(FutureBuilder<String>(
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key: key, future: completer.future, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsOneWidget);
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});
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testWidgets('gracefully handles transition to null future', (WidgetTester tester) async {
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final GlobalKey key = GlobalKey();
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@ -80,14 +91,14 @@ void main() {
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await tester.pumpWidget(FutureBuilder<String>(
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key: key, future: completer.future, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsOneWidget);
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await tester.pumpWidget(FutureBuilder<String>(
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key: key, future: null, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null, null)'), findsOneWidget);
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completer.complete('hello');
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await eventFiring(tester);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null, null)'), findsOneWidget);
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});
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testWidgets('gracefully handles transition to other future', (WidgetTester tester) async {
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final GlobalKey key = GlobalKey();
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@ -96,35 +107,35 @@ void main() {
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await tester.pumpWidget(FutureBuilder<String>(
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key: key, future: completerA.future, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsOneWidget);
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await tester.pumpWidget(FutureBuilder<String>(
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key: key, future: completerB.future, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsOneWidget);
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completerB.complete('B');
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completerA.complete('A');
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await eventFiring(tester);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.done, B, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.done, B, null, null)'), findsOneWidget);
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});
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testWidgets('tracks life-cycle of Future to success', (WidgetTester tester) async {
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final Completer<String> completer = Completer<String>();
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await tester.pumpWidget(FutureBuilder<String>(
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future: completer.future, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsOneWidget);
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completer.complete('hello');
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await eventFiring(tester);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.done, hello, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.done, hello, null, null)'), findsOneWidget);
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});
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testWidgets('tracks life-cycle of Future to error', (WidgetTester tester) async {
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final Completer<String> completer = Completer<String>();
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await tester.pumpWidget(FutureBuilder<String>(
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future: completer.future, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsOneWidget);
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completer.completeError('bad');
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsOneWidget);
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completer.completeError('bad', StackTrace.fromString('trace'));
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await eventFiring(tester);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.done, null, bad)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.done, null, bad, trace)'), findsOneWidget);
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});
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testWidgets('runs the builder using given initial data', (WidgetTester tester) async {
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final GlobalKey key = GlobalKey();
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@ -134,7 +145,7 @@ void main() {
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builder: snapshotText,
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initialData: 'I',
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, I, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, I, null, null)'), findsOneWidget);
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});
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testWidgets('ignores initialData when reconfiguring', (WidgetTester tester) async {
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final GlobalKey key = GlobalKey();
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@ -144,7 +155,7 @@ void main() {
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builder: snapshotText,
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initialData: 'I',
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, I, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, I, null, null)'), findsOneWidget);
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final Completer<String> completer = Completer<String>();
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await tester.pumpWidget(FutureBuilder<String>(
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key: key,
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@ -152,7 +163,7 @@ void main() {
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builder: snapshotText,
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initialData: 'Ignored',
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, I, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, I, null, null)'), findsOneWidget);
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});
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});
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group('StreamBuilder', () {
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@ -161,12 +172,12 @@ void main() {
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await tester.pumpWidget(StreamBuilder<String>(
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key: key, stream: null, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null, null)'), findsOneWidget);
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final StreamController<String> controller = StreamController<String>();
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await tester.pumpWidget(StreamBuilder<String>(
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key: key, stream: controller.stream, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsOneWidget);
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});
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testWidgets('gracefully handles transition to null stream', (WidgetTester tester) async {
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final GlobalKey key = GlobalKey();
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@ -174,11 +185,11 @@ void main() {
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await tester.pumpWidget(StreamBuilder<String>(
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key: key, stream: controller.stream, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsOneWidget);
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await tester.pumpWidget(StreamBuilder<String>(
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key: key, stream: null, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null, null)'), findsOneWidget);
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});
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testWidgets('gracefully handles transition to other stream', (WidgetTester tester) async {
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final GlobalKey key = GlobalKey();
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@ -187,14 +198,14 @@ void main() {
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await tester.pumpWidget(StreamBuilder<String>(
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key: key, stream: controllerA.stream, builder: snapshotText,
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));
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsOneWidget);
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expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsOneWidget);
|
||||
await tester.pumpWidget(StreamBuilder<String>(
|
||||
key: key, stream: controllerB.stream, builder: snapshotText,
|
||||
));
|
||||
controllerB.add('B');
|
||||
controllerA.add('A');
|
||||
await eventFiring(tester);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.active, B, null)'), findsOneWidget);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.active, B, null, null)'), findsOneWidget);
|
||||
});
|
||||
testWidgets('tracks events and errors of stream until completion', (WidgetTester tester) async {
|
||||
final GlobalKey key = GlobalKey();
|
||||
@ -202,19 +213,19 @@ void main() {
|
||||
await tester.pumpWidget(StreamBuilder<String>(
|
||||
key: key, stream: controller.stream, builder: snapshotText,
|
||||
));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsOneWidget);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsOneWidget);
|
||||
controller.add('1');
|
||||
controller.add('2');
|
||||
await eventFiring(tester);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.active, 2, null)'), findsOneWidget);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.active, 2, null, null)'), findsOneWidget);
|
||||
controller.add('3');
|
||||
controller.addError('bad');
|
||||
controller.addError('bad', StackTrace.fromString('trace'));
|
||||
await eventFiring(tester);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.active, null, bad)'), findsOneWidget);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.active, null, bad, trace)'), findsOneWidget);
|
||||
controller.add('4');
|
||||
controller.close();
|
||||
await eventFiring(tester);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.done, 4, null)'), findsOneWidget);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.done, 4, null, null)'), findsOneWidget);
|
||||
});
|
||||
testWidgets('runs the builder using given initial data', (WidgetTester tester) async {
|
||||
final StreamController<String> controller = StreamController<String>();
|
||||
@ -223,7 +234,7 @@ void main() {
|
||||
builder: snapshotText,
|
||||
initialData: 'I',
|
||||
));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, I, null)'), findsOneWidget);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, I, null, null)'), findsOneWidget);
|
||||
});
|
||||
testWidgets('ignores initialData when reconfiguring', (WidgetTester tester) async {
|
||||
final GlobalKey key = GlobalKey();
|
||||
@ -233,7 +244,7 @@ void main() {
|
||||
builder: snapshotText,
|
||||
initialData: 'I',
|
||||
));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.none, I, null)'), findsOneWidget);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.none, I, null, null)'), findsOneWidget);
|
||||
final StreamController<String> controller = StreamController<String>();
|
||||
await tester.pumpWidget(StreamBuilder<String>(
|
||||
key: key,
|
||||
@ -241,7 +252,7 @@ void main() {
|
||||
builder: snapshotText,
|
||||
initialData: 'Ignored',
|
||||
));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, I, null)'), findsOneWidget);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, I, null, null)'), findsOneWidget);
|
||||
});
|
||||
});
|
||||
group('FutureBuilder and StreamBuilder behave identically on Stream from Future', () {
|
||||
@ -251,35 +262,46 @@ void main() {
|
||||
FutureBuilder<String>(future: completer.future, builder: snapshotText),
|
||||
StreamBuilder<String>(stream: completer.future.asStream(), builder: snapshotText),
|
||||
]));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsNWidgets(2));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsNWidgets(2));
|
||||
completer.complete('hello');
|
||||
await eventFiring(tester);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.done, hello, null)'), findsNWidgets(2));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.done, hello, null, null)'), findsNWidgets(2));
|
||||
});
|
||||
testWidgets('when completing with error', (WidgetTester tester) async {
|
||||
testWidgets('when completing with error and with empty stack trace', (WidgetTester tester) async {
|
||||
final Completer<String> completer = Completer<String>();
|
||||
await tester.pumpWidget(Column(children: <Widget>[
|
||||
FutureBuilder<String>(future: completer.future, builder: snapshotText),
|
||||
StreamBuilder<String>(stream: completer.future.asStream(), builder: snapshotText),
|
||||
]));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null)'), findsNWidgets(2));
|
||||
completer.completeError('bad');
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsNWidgets(2));
|
||||
completer.completeError('bad', StackTrace.empty);
|
||||
await eventFiring(tester);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.done, null, bad)'), findsNWidgets(2));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.done, null, bad, )'), findsNWidgets(2));
|
||||
});
|
||||
testWidgets('when completing with error and with stack trace', (WidgetTester tester) async {
|
||||
final Completer<String> completer = Completer<String>();
|
||||
await tester.pumpWidget(Column(children: <Widget>[
|
||||
FutureBuilder<String>(future: completer.future, builder: snapshotText),
|
||||
StreamBuilder<String>(stream: completer.future.asStream(), builder: snapshotText),
|
||||
]));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, null, null, null)'), findsNWidgets(2));
|
||||
completer.completeError('bad', StackTrace.fromString('trace'));
|
||||
await eventFiring(tester);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.done, null, bad, trace)'), findsNWidgets(2));
|
||||
});
|
||||
testWidgets('when Future is null', (WidgetTester tester) async {
|
||||
await tester.pumpWidget(Column(children: <Widget>[
|
||||
FutureBuilder<String>(future: null, builder: snapshotText),
|
||||
StreamBuilder<String>(stream: null, builder: snapshotText),
|
||||
]));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null)'), findsNWidgets(2));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.none, null, null, null)'), findsNWidgets(2));
|
||||
});
|
||||
testWidgets('when initialData is used with null Future and Stream', (WidgetTester tester) async {
|
||||
await tester.pumpWidget(Column(children: <Widget>[
|
||||
FutureBuilder<String>(future: null, builder: snapshotText, initialData: 'I'),
|
||||
StreamBuilder<String>(stream: null, builder: snapshotText, initialData: 'I'),
|
||||
]));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.none, I, null)'), findsNWidgets(2));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.none, I, null, null)'), findsNWidgets(2));
|
||||
});
|
||||
testWidgets('when using initialData and completing with data', (WidgetTester tester) async {
|
||||
final Completer<String> completer = Completer<String>();
|
||||
@ -287,10 +309,10 @@ void main() {
|
||||
FutureBuilder<String>(future: completer.future, builder: snapshotText, initialData: 'I'),
|
||||
StreamBuilder<String>(stream: completer.future.asStream(), builder: snapshotText, initialData: 'I'),
|
||||
]));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, I, null)'), findsNWidgets(2));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.waiting, I, null, null)'), findsNWidgets(2));
|
||||
completer.complete('hello');
|
||||
await eventFiring(tester);
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.done, hello, null)'), findsNWidgets(2));
|
||||
expect(find.text('AsyncSnapshot<String>(ConnectionState.done, hello, null, null)'), findsNWidgets(2));
|
||||
});
|
||||
});
|
||||
group('StreamBuilderBase', () {
|
||||
@ -326,11 +348,11 @@ void main() {
|
||||
final StreamController<String> controller = StreamController<String>();
|
||||
await tester.pumpWidget(StringCollector(key: key, stream: controller.stream));
|
||||
controller.add('1');
|
||||
controller.addError('bad');
|
||||
controller.addError('bad', StackTrace.fromString('trace'));
|
||||
controller.add('2');
|
||||
controller.close();
|
||||
await eventFiring(tester);
|
||||
expect(find.text('conn, data:1, error:bad, data:2, done'), findsOneWidget);
|
||||
expect(find.text('conn, data:1, error:bad stackTrace:trace, data:2, done'), findsOneWidget);
|
||||
});
|
||||
});
|
||||
}
|
||||
@ -352,7 +374,7 @@ class StringCollector extends StreamBuilderBase<String, List<String>> {
|
||||
List<String> afterData(List<String> current, String data) => current..add('data:$data');
|
||||
|
||||
@override
|
||||
List<String> afterError(List<String> current, dynamic error) => current..add('error:$error');
|
||||
List<String> afterError(List<String> current, dynamic error, StackTrace stackTrace) => current..add('error:$error stackTrace:$stackTrace');
|
||||
|
||||
@override
|
||||
List<String> afterDone(List<String> current) => current..add('done');
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user