WidgetTester enterText() and showKeyboard() can specify an EditableText ancestor (#9398)

packages/flutter/test/material/text_field_test.dart

@@ -103,7 +103,7 @@ void main() {
 
     Future<Null> checkText(String testValue) async {
       return TestAsyncUtils.guard(() async {
-        await tester.enterText(find.byType(EditableText), testValue);
+        await tester.enterText(find.byType(TextField), testValue);
 
         // Check that the onChanged event handler fired.
         expect(textFieldValue, equals(testValue));
@@ -137,7 +137,7 @@ void main() {
     }
 
     await tester.pumpWidget(builder());
-    await tester.showKeyboard(find.byType(EditableText));
+    await tester.showKeyboard(find.byType(TextField));
 
     final EditableTextState editableText = tester.state(find.byType(EditableText));
 
@@ -157,7 +157,7 @@ void main() {
     }
 
     await checkCursorToggle();
-    await tester.showKeyboard(find.byType(EditableText));
+    await tester.showKeyboard(find.byType(TextField));
 
     // Try the test again with a nonempty EditableText.
     tester.testTextInput.updateEditingValue(const TextEditingValue(
@@ -182,7 +182,7 @@ void main() {
     }
 
     await tester.pumpWidget(builder());
-    await tester.showKeyboard(find.byType(EditableText));
+    await tester.showKeyboard(find.byType(TextField));
 
     const String testValue = 'ABC';
     tester.testTextInput.updateEditingValue(const TextEditingValue(
@@ -211,7 +211,7 @@ void main() {
     expect(controller.selection.extentOffset, -1);
 
     final String testValue = 'abc def ghi';
-    await tester.enterText(find.byType(EditableText), testValue);
+    await tester.enterText(find.byType(TextField), testValue);
 
     await tester.pumpWidget(builder());
 
@@ -249,7 +249,7 @@ void main() {
     await tester.pumpWidget(builder());
 
     final String testValue = 'abc def ghi';
-    await tester.enterText(find.byType(EditableText), testValue);
+    await tester.enterText(find.byType(TextField), testValue);
     expect(controller.value.text, testValue);
 
     await tester.pumpWidget(builder());
@@ -284,7 +284,7 @@ void main() {
     await tester.pumpWidget(builder());
 
     final String testValue = 'abc def ghi';
-    await tester.enterText(find.byType(EditableText), testValue);
+    await tester.enterText(find.byType(TextField), testValue);
 
     await tester.pumpWidget(builder());
 
@@ -346,7 +346,7 @@ void main() {
     await tester.pumpWidget(builder());
 
     final String testValue = 'abc def ghi';
-    await tester.enterText(find.byType(EditableText), testValue);
+    await tester.enterText(find.byType(TextField), testValue);
     await tester.pumpWidget(builder());
 
     // Tap the selection handle to bring up the "paste / select all" menu.
@@ -398,7 +398,7 @@ void main() {
     await tester.pumpWidget(builder());
 
     final String testValue = 'abc def ghi';
-    await tester.enterText(find.byType(EditableText), testValue);
+    await tester.enterText(find.byType(TextField), testValue);
     await tester.pumpWidget(builder());
 
     // Tap the selection handle to bring up the "paste / select all" menu.
@@ -449,12 +449,12 @@ void main() {
     final RenderBox inputBox = findInputBox();
     final Size emptyInputSize = inputBox.size;
 
-    await tester.enterText(find.byType(EditableText), 'No wrapping here.');
+    await tester.enterText(find.byType(TextField), 'No wrapping here.');
     await tester.pumpWidget(builder(3));
     expect(findInputBox(), equals(inputBox));
     expect(inputBox.size, equals(emptyInputSize));
 
-    await tester.enterText(find.byType(EditableText), kThreeLines);
+    await tester.enterText(find.byType(TextField), kThreeLines);
     await tester.pumpWidget(builder(3));
     expect(findInputBox(), equals(inputBox));
     expect(inputBox.size, greaterThan(emptyInputSize));
@@ -462,13 +462,13 @@ void main() {
     final Size threeLineInputSize = inputBox.size;
 
     // An extra line won't increase the size because we max at 3.
-    await tester.enterText(find.byType(EditableText), kFourLines);
+    await tester.enterText(find.byType(TextField), kFourLines);
     await tester.pumpWidget(builder(3));
     expect(findInputBox(), equals(inputBox));
     expect(inputBox.size, threeLineInputSize);
 
     // But now it will.
-    await tester.enterText(find.byType(EditableText), kFourLines);
+    await tester.enterText(find.byType(TextField), kFourLines);
     await tester.pumpWidget(builder(4));
     expect(findInputBox(), equals(inputBox));
     expect(inputBox.size, greaterThan(threeLineInputSize));
@@ -493,7 +493,7 @@ void main() {
 
     final String testValue = kThreeLines;
     final String cutValue = 'First line of stuff ';
-    await tester.enterText(find.byType(EditableText), testValue);
+    await tester.enterText(find.byType(TextField), testValue);
 
     await tester.pumpWidget(builder());
 
@@ -572,7 +572,7 @@ void main() {
     await tester.pumpWidget(builder());
     await tester.pump(const Duration(seconds: 1));
 
-    await tester.enterText(find.byType(EditableText), kFourLines);
+    await tester.enterText(find.byType(TextField), kFourLines);
 
     await tester.pumpWidget(builder());
     await tester.pump(const Duration(seconds: 1));
@@ -660,7 +660,7 @@ void main() {
 
     Future<Null> checkText(String testValue) {
       return TestAsyncUtils.guard(() async {
-        await tester.enterText(find.byType(EditableText), testValue);
+        await tester.enterText(find.byType(TextField), testValue);
 
         // Check that the onChanged event handler fired.
         expect(textFieldValue, equals(testValue));
@@ -694,7 +694,7 @@ void main() {
 
     Future<Null> checkText(String testValue) async {
       return TestAsyncUtils.guard(() async {
-        await tester.enterText(find.byType(EditableText), testValue);
+        await tester.enterText(find.byType(TextField), testValue);
 
         // Check that the onChanged event handler fired.
         expect(textFieldValue, equals(testValue));
@@ -866,7 +866,7 @@ void main() {
 
     expect(topLeft.dx, equals(399.0));
 
-    await tester.enterText(find.byType(EditableText), 'abcd');
+    await tester.enterText(find.byType(TextField), 'abcd');
     await tester.pump();
 
     topLeft = editable.localToGlobal(
@@ -900,7 +900,7 @@ void main() {
 
     expect(topLeft.dx, equals(399.0));
 
-    await tester.enterText(find.byType(EditableText), 'abcd');
+    await tester.enterText(find.byType(TextField), 'abcd');
     await tester.pump();
 
     topLeft = editable.localToGlobal(

packages/flutter/test/widgets/form_test.dart

@@ -28,7 +28,7 @@ void main() {
     expect(fieldValue, isNull);
 
     Future<Null> checkText(String testValue) async {
-      await tester.enterText(find.byType(EditableText), testValue);
+      await tester.enterText(find.byType(TextFormField), testValue);
       formKey.currentState.save();
       // pump'ing is unnecessary because callback happens regardless of frames
       expect(fieldValue, equals(testValue));
@@ -58,7 +58,7 @@ void main() {
     expect(fieldValue, isNull);
 
     Future<Null> checkText(String testValue) async {
-      await tester.enterText(find.byType(EditableText), testValue);
+      await tester.enterText(find.byType(TextField), testValue);
       // pump'ing is unnecessary because callback happens regardless of frames
       expect(fieldValue, equals(testValue));
     }
@@ -90,7 +90,7 @@ void main() {
 
     Future<Null> checkErrorText(String testValue) async {
       formKey.currentState.reset();
-      await tester.enterText(find.byType(EditableText), testValue);
+      await tester.enterText(find.byType(TextFormField), testValue);
       await tester.pumpWidget(builder(false));
 
       // We have to manually validate if we're not autovalidating.
@@ -101,7 +101,7 @@ void main() {
 
       // Try again with autovalidation. Should validate immediately.
       formKey.currentState.reset();
-      await tester.enterText(find.byType(EditableText), testValue);
+      await tester.enterText(find.byType(TextFormField), testValue);
       await tester.pumpWidget(builder(true));
 
       expect(find.text(errorText(testValue)), findsOneWidget);
@@ -141,7 +141,7 @@ void main() {
     await tester.pumpWidget(builder());
 
     Future<Null> checkErrorText(String testValue) async {
-      await tester.enterText(find.byType(EditableText).first, testValue);
+      await tester.enterText(find.byType(TextFormField).first, testValue);
       await tester.pump();
 
       // Check for a new Text widget with our error text.
@@ -172,7 +172,7 @@ void main() {
     }
 
     await tester.pumpWidget(builder());
-    await tester.showKeyboard(find.byType(EditableText));
+    await tester.showKeyboard(find.byType(TextFormField));
 
     // initial value should be loaded into keyboard editing state
     expect(tester.testTextInput.editingState, isNotNull);
@@ -184,7 +184,7 @@ void main() {
 
     // sanity check, make sure we can still edit the text and everything updates
     expect(inputKey.currentState.value, equals(initialValue));
-    await tester.enterText(find.byType(EditableText), 'world');
+    await tester.enterText(find.byType(TextFormField), 'world');
     await tester.pump();
     expect(inputKey.currentState.value, equals('world'));
     expect(editableText.widget.controller.text, equals('world'));
@@ -214,7 +214,7 @@ void main() {
     expect(fieldValue, isNull);
     expect(formKey.currentState.validate(), isTrue);
 
-    await tester.enterText(find.byType(EditableText), 'Test');
+    await tester.enterText(find.byType(TextFormField), 'Test');
     await tester.pumpWidget(builder(false));
 
     // Form wasn't saved yet.

packages/flutter_test/lib/src/finders.dart

@@ -189,10 +189,13 @@ class CommonFinders {
   ///       of: find.widgetWithText(Row, 'label_1'), matching: find.text('value_1')
   ///     ), findsOneWidget);
   ///
+  /// If the [matchRoot] argument is true then the widget(s) specified by [of]
+  /// will be matched along with the descendants.
+  ///
   /// If the [skipOffstage] argument is true (the default), then nodes that are
   /// [Offstage] or that are from inactive [Route]s are skipped.
-  Finder descendant({ Finder of, Finder matching, bool skipOffstage: true }) {
-    return new _DescendantFinder(of, matching, skipOffstage: skipOffstage);
+  Finder descendant({ Finder of, Finder matching, bool matchRoot: false, bool skipOffstage: true }) {
+    return new _DescendantFinder(of, matching, matchRoot: matchRoot, skipOffstage: skipOffstage);
   }
 }
 
@@ -488,13 +491,21 @@ class _ElementPredicateFinder extends MatchFinder {
 }
 
 class _DescendantFinder extends Finder {
-  _DescendantFinder(this.ancestor, this.descendant, { bool skipOffstage: true }) : super(skipOffstage: skipOffstage);
+  _DescendantFinder(this.ancestor, this.descendant, {
+    this.matchRoot: false,
+    bool skipOffstage: true,
+  }) : super(skipOffstage: skipOffstage);
 
   final Finder ancestor;
   final Finder descendant;
+  final bool matchRoot;
 
   @override
-  String get description => '${descendant.description} that has ancestor(s) with ${ancestor.description} ';
+  String get description {
+    if (matchRoot)
+      return '${descendant.description} in the subtree(s) beginning with ${ancestor.description}';
+    return '${descendant.description} that has ancestor(s) with ${ancestor.description}';
+  }
 
   @override
   Iterable<Element> apply(Iterable<Element> candidates) {
@@ -503,8 +514,12 @@ class _DescendantFinder extends Finder {
 
   @override
   Iterable<Element> get allCandidates {
-    return ancestor.evaluate().expand(
+    final Iterable<Element> ancestorElements = ancestor.evaluate();
+    final List<Element> candidates = ancestorElements.expand(
       (Element element) => collectAllElementsFrom(element, skipOffstage: skipOffstage)
     ).toSet().toList();
+    if (matchRoot)
+      candidates.insertAll(0, ancestorElements);
+    return candidates;
   }
 }

packages/flutter_test/lib/src/widget_tester.dart

@@ -436,19 +436,25 @@ class WidgetTester extends WidgetController implements HitTestDispatcher, Ticker
   /// Returns the TestTextInput singleton.
   ///
   /// Typical app tests will not need to use this value. To add text to widgets
-  /// like [Input] or [TextField], call [enterText].
+  /// like [TextField] or [FormTextField], call [enterText].
   TestTextInput get testTextInput => binding.testTextInput;
 
-  /// Give the EditableText widget specified by [finder] the focus, as if the
+  /// Give the text input widget specified by [finder] the focus, as if the
   /// onscreen keyboard had appeared.
   ///
-  /// Tests that just need to add text to widgets like [Input] or [TextField]
-  /// only need to call [enterText].
+  /// The widget specified by [finder] must be an [EditableText] or have
+  /// an [EditableText] descendant. For example `find.byType(TextField)`
+  /// or `find.byType(FormTextField)`, or `find.byType(EditableText)`.
+  ///
+  /// Tests that just need to add text to widgets like [TextField]
+  /// or [FormTextField] only need to call [enterText].
   Future<Null> showKeyboard(Finder finder) async {
     return TestAsyncUtils.guard(() async {
-      // TODO(hansmuller): Once find.descendant (#7789) lands replace the following
-      // RHS with state(find.descendant(finder), find.byType(EditableText)).
-      final EditableTextState editable = state(finder);
+      final EditableTextState editable = state(find.descendant(
+        of: finder,
+        matching: find.byType(EditableText),
+        matchRoot: true,
+      ));
       if (editable != binding.focusedEditable) {
         binding.focusedEditable = editable;
         await pump();
@@ -456,8 +462,15 @@ class WidgetTester extends WidgetController implements HitTestDispatcher, Ticker
     });
   }
 
-  /// Give the EditableText widget specified by [finder] the focus and
+  /// Give the text input widget specified by [finder] the focus and
   /// enter [text] as if it been provided by the onscreen keyboard.
+  ///
+  /// The widget specified by [finder] must be an [EditableText] or have
+  /// an [EditableText] descendant. For example `find.byType(TextField)`
+  /// or `find.byType(FormTextField)`, or `find.byType(EditableText)`.
+  ///
+  /// To just give [finder] the focus without entering any text,
+  /// see [showKeyboard].
   Future<Null> enterText(Finder finder, String text) async {
     return TestAsyncUtils.guard(() async {
       await showKeyboard(finder);

packages/flutter_test/test/widget_tester_test.dart

@@ -184,6 +184,30 @@ void main() {
         contains('Actual: ?:<zero widgets with text "bar" that has ancestor(s) with type Column with text "foo"')
       );
     });
+
+    testWidgets('Root not matched by default', (WidgetTester tester) async {
+      await tester.pumpWidget(new Row(children: <Widget>[
+        new Column(children: <Text>[const Text('foo'), const Text('bar')])
+      ]));
+
+      expect(find.descendant(
+        of: find.widgetWithText(Row, 'foo'),
+        matching: find.byType(Row),
+      ), findsNothing);
+    });
+
+    testWidgets('Match the root', (WidgetTester tester) async {
+      await tester.pumpWidget(new Row(children: <Widget>[
+        new Column(children: <Text>[const Text('foo'), const Text('bar')])
+      ]));
+
+      expect(find.descendant(
+        of: find.widgetWithText(Row, 'foo'),
+        matching: find.byType(Row),
+        matchRoot: true,
+      ), findsOneWidget);
+    });
+
   });
 
   testWidgets('hasRunningAnimations control test', (WidgetTester tester) async {