Unskip the bidi semantics test. (#62823)

packages/flutter/test/widgets/text_test.dart

@@ -506,6 +506,13 @@ void main() {
     );
     // The expected visual order of the text is:
     //   hello world RIS OD you OD WOH YOB good bye
+    // There are five unique text areas, they are, in visual order but
+    // showing the logical text:
+    //   [hello world][SIR][HOW DO you DO][BOY][good bye]
+    // The direction of each varies based on the first bit of that area.
+    // The presence of the bidi formatting characters in the text is a
+    // bit dubious, but that's what we do currently, and it's not really
+    // clear what the perfect behavior would be...
     final TestSemantics expectedSemantics = TestSemantics.root(
       children: <TestSemantics>[
         TestSemantics.rootChild(
@@ -513,33 +520,31 @@ void main() {
           children: <TestSemantics>[
             TestSemantics(
               rect: const Rect.fromLTRB(-4.0, -4.0, 480.0, 18.0),
-              label: 'hello world ',
-              textDirection: TextDirection.ltr, // text direction is declared as LTR.
+              label: 'hello world${Unicode.RLE}${Unicode.RLO} ',
+              textDirection: TextDirection.ltr,
             ),
             TestSemantics(
-              rect: const Rect.fromLTRB(150.0, -4.0, 200.0, 18.0),
-              label: 'RIS',
-              textDirection: TextDirection.rtl,  // in the last string we switched to RTL using RLE.
-              actions: <SemanticsAction>[SemanticsAction.tap],
-              flags: <SemanticsFlag>[SemanticsFlag.isLink],
+              rect: const Rect.fromLTRB(416.0, -4.0, 466.0, 18.0),
+              label: 'BOY',
+              textDirection: TextDirection.rtl,
+              actions: <SemanticsAction>[SemanticsAction.longPress],
             ),
             TestSemantics(
               rect: const Rect.fromLTRB(192.0, -4.0, 424.0, 18.0),
-              label: ' OD you OD WOH ', // Still RTL.
+              label: ' HOW DO${Unicode.PDF} you ${Unicode.RLO} DO ',
               textDirection: TextDirection.rtl,
             ),
             TestSemantics(
-              rect: const Rect.fromLTRB(416.0, -4.0, 466.0, 18.0),
-              label: 'YOB',
-              textDirection: TextDirection.rtl, // Still RTL.
-              actions: <SemanticsAction>[
-                SemanticsAction.longPress,
-              ],
+              rect: const Rect.fromLTRB(150.0, -4.0, 200.0, 18.0),
+              label: 'SIR',
+              textDirection: TextDirection.rtl,
+              actions: <SemanticsAction>[SemanticsAction.tap],
+              flags: <SemanticsFlag>[SemanticsFlag.isLink],
             ),
             TestSemantics(
               rect: const Rect.fromLTRB(472.0, -4.0, 606.0, 18.0),
-              label: ' good bye',
-              textDirection: TextDirection.rtl, // Begin as RTL but pop to LTR.
+              label: '${Unicode.PDF}${Unicode.PDF} good bye',
+              textDirection: TextDirection.rtl,
             ),
           ],
         ),
@@ -554,7 +559,7 @@ void main() {
       ),
     );
     semantics.dispose();
-  }, skip: true); // https://github.com/flutter/flutter/issues/20891
+  }, skip: isBrowser); // https://github.com/flutter/flutter/issues/62945
 
   testWidgets('TapGesture recognizers contribute link semantics', (WidgetTester tester) async {
     final SemanticsTester semantics = SemanticsTester(tester);

packages/flutter_test/lib/src/platform.dart

@@ -4,16 +4,23 @@
 
 import 'dart:io';
 
-// Whether the current dart code is running in an environment that was compiled
-// to JavaScript.
-const bool _kIsCompiledToJavaScript = identical(0, 0.0);
+/// Whether the test is running in a web browser compiled to JavaScript.
+///
+/// See also:
+///
+///  * [kIsWeb], the equivalent constant in the `foundation` library.
+const bool isBrowser = identical(0, 0.0);
 
 /// Whether the test is running on the Windows operating system.
 ///
-/// This does not include test compiled to JavaScript running in a browser on
+/// This does not include tests compiled to JavaScript running in a browser on
 /// the Windows operating system.
+///
+/// See also:
+///
+///  * [isBrowser], which reports true for tests running in browsers.
 bool get isWindows {
-  if (_kIsCompiledToJavaScript) {
+  if (isBrowser) {
     return false;
   }
   return Platform.isWindows;
@@ -21,10 +28,14 @@ bool get isWindows {
 
 /// Whether the test is running on the macOS operating system.
 ///
-/// This does not include test compiled to JavaScript running in a browser on
+/// This does not include tests compiled to JavaScript running in a browser on
 /// the macOS operating system.
+///
+/// See also:
+///
+///  * [isBrowser], which reports true for tests running in browsers.
 bool get isMacOS {
-  if (_kIsCompiledToJavaScript) {
+  if (isBrowser) {
     return false;
   }
   return Platform.isMacOS;
@@ -32,16 +43,15 @@ bool get isMacOS {
 
 /// Whether the test is running on the Linux operating system.
 ///
-/// This does not include test compiled to JavaScript running in a browser on
+/// This does not include tests compiled to JavaScript running in a browser on
 /// the Linux operating system.
+///
+/// See also:
+///
+///  * [isBrowser], which reports true for tests running in browsers.
 bool get isLinux {
-  if (_kIsCompiledToJavaScript) {
+  if (isBrowser) {
     return false;
   }
   return Platform.isLinux;
 }
-
-/// Whether the test is running in a web browser compiled to JavaScript.
-bool get isBrowser {
-  return _kIsCompiledToJavaScript;
-}