readd tests

packages/flutter/test/material/text_field_test.dart

@@ -6822,6 +6822,154 @@ void main() {
     expect(editableText.style.color, theme.textTheme.bodyLarge!.color!.withOpacity(0.38));
   });
 
+  testWidgets('Enabled TextField statesController', (WidgetTester tester) async {
+    final TextEditingController textEditingController = TextEditingController(
+      text: 'Atwater Peel Sherbrooke Bonaventure',
+    );
+    int count = 0;
+    void valueChanged() {
+      count += 1;
+    }
+    final MaterialStatesController statesController = MaterialStatesController();
+    statesController.addListener(valueChanged);
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Material(
+          child: Center(
+            child: TextField(
+              statesController: statesController,
+              controller: textEditingController,
+            ),
+          ),
+        ),
+      ),
+    );
+
+    final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
+    final Offset center = tester.getCenter(find.byType(EditableText).first);
+    await gesture.moveTo(center);
+    await tester.pump();
+    expect(statesController.value, <MaterialState>{MaterialState.hovered});
+    expect(count, 1);
+
+    await gesture.moveTo(Offset.zero);
+    await tester.pump();
+    expect(statesController.value, <MaterialState>{});
+    expect(count, 2);
+
+    await gesture.down(center);
+    await tester.pump();
+    await gesture.up();
+    await tester.pump();
+    expect(statesController.value, <MaterialState>{MaterialState.hovered, MaterialState.focused});
+    expect(count, 4); // adds hovered and pressed - two changes.
+
+    await gesture.moveTo(Offset.zero);
+    await tester.pump();
+    expect(statesController.value, <MaterialState>{MaterialState.focused});
+    expect(count, 5);
+
+    await gesture.down(Offset.zero);
+    await tester.pump();
+    expect(statesController.value, <MaterialState>{});
+    expect(count, 6);
+    await gesture.up();
+    await tester.pump();
+
+    await gesture.down(center);
+    await tester.pump();
+    await gesture.up();
+    await tester.pump();
+    expect(statesController.value, <MaterialState>{MaterialState.hovered, MaterialState.focused});
+    expect(count, 8); // adds hovered and pressed - two changes.
+
+    // If the text field is rebuilt disabled, then the focused state is
+    // removed.
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Material(
+          child: Center(
+            child: TextField(
+              statesController: statesController,
+              controller: textEditingController,
+              enabled: false,
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+    expect(statesController.value, <MaterialState>{MaterialState.hovered, MaterialState.disabled});
+    expect(count, 10); // removes focused and adds disabled - two changes.
+
+    await gesture.moveTo(Offset.zero);
+    await tester.pump();
+    expect(statesController.value, <MaterialState>{MaterialState.disabled});
+    expect(count, 11);
+
+    // If the text field is rebuilt enabled and in an error state, then the error
+    // state is added.
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Material(
+          child: Center(
+            child: TextField(
+              statesController: statesController,
+              controller: textEditingController,
+              decoration: const InputDecoration(
+                errorText: 'error',
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+    expect(statesController.value, <MaterialState>{MaterialState.error});
+    expect(count, 13); // removes disabled and adds error - two changes.
+
+    // If the text field is rebuilt without an error, then the error
+    // state is removed.
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Material(
+          child: Center(
+            child: TextField(
+              statesController: statesController,
+              controller: textEditingController,
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+    expect(statesController.value, <MaterialState>{});
+    expect(count, 14);
+  });
+
+  testWidgets('Disabled TextField statesController', (WidgetTester tester) async {
+    int count = 0;
+    void valueChanged() {
+      count += 1;
+    }
+    final MaterialStatesController controller = MaterialStatesController();
+    controller.addListener(valueChanged);
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Material(
+          child: Center(
+            child: TextField(
+              statesController: controller,
+              enabled: false,
+            ),
+          ),
+        ),
+      ),
+    );
+    expect(controller.value, <MaterialState>{MaterialState.disabled});
+    expect(count, 1);
+  });
+
   testWidgetsWithLeakTracking('Provided style correctly resolves for material states', (WidgetTester tester) async {
     final TextEditingController controller = _textEditingController(
       text: 'Atwater Peel Sherbrooke Bonaventure',