Make the Ahem font available to tests. (#7725)

packages/flutter/test/material/tabs_test.dart

@@ -188,19 +188,19 @@ void main() {
 
 
   testWidgets('TabBar can be scrolled independent of the selection', (WidgetTester tester) async {
-    List<String> tabs = <String>['AAAAAA', 'BBBBBB', 'CCCCCC', 'DDDDDD', 'EEEEEE', 'FFFFFF', 'GGGGGG', 'HHHHHH', 'IIIIII', 'JJJJJJ', 'KKKKKK', 'LLLLLL'];
+    List<String> tabs = <String>['AAAA', 'BBBB', 'CCCC', 'DDDD', 'EEEE', 'FFFF', 'GGGG', 'HHHH', 'IIII', 'JJJJ', 'KKKK', 'LLLL'];
     Key tabBarKey = new Key('TabBar');
-    await tester.pumpWidget(buildFrame(tabs: tabs, value: 'AAAAAA', isScrollable: true, tabBarKey: tabBarKey));
-    TabController controller = DefaultTabController.of(tester.element(find.text('AAAAAA')));
+    await tester.pumpWidget(buildFrame(tabs: tabs, value: 'AAAA', isScrollable: true, tabBarKey: tabBarKey));
+    TabController controller = DefaultTabController.of(tester.element(find.text('AAAA')));
     expect(controller, isNotNull);
     expect(controller.index, 0);
 
     // Fling-scroll the TabBar to the left
-    expect(tester.getCenter(find.text('HHHHHH')).x, lessThan(700.0));
+    expect(tester.getCenter(find.text('HHHH')).x, lessThan(700.0));
     await tester.fling(find.byKey(tabBarKey), const Offset(-200.0, 0.0), 10000.0);
     await tester.pump();
     await tester.pump(const Duration(seconds: 1)); // finish the scroll animation
-    expect(tester.getCenter(find.text('HHHHHH')).x, lessThan(500.0));
+    expect(tester.getCenter(find.text('HHHH')).x, lessThan(500.0));
 
     // Scrolling the TabBar doesn't change the selection
     expect(controller.index, 0);

packages/flutter/test/widgets/buttons_test.dart

@@ -17,7 +17,7 @@ void main() {
         child: new Center(
           child: new FlatButton(
             onPressed: () { },
-            child: new Text('Hello')
+            child: new Text('ABC')
           )
         )
       )
@@ -30,7 +30,7 @@ void main() {
           new TestSemantics(
             id: 1,
             actions: SemanticsAction.tap.index,
-            label: 'Hello',
+            label: 'ABC',
             rect: new Rect.fromLTRB(0.0, 0.0, 88.0, 36.0),
             transform: new Matrix4.translationValues(356.0, 282.0, 0.0)
           )

packages/flutter_tools/lib/src/commands/test.dart

@@ -173,7 +173,7 @@ class TestCommand extends FlutterCommand {
     testArgs.add('--');
 
     Directory testDir;
-    List<String> files = argResults.rest.map((String testPath) => path.absolute(testPath)).toList();
+    Iterable<String> files = argResults.rest.map((String testPath) => path.absolute(testPath)).toList();
     if (argResults['start-paused']) {
       if (files.length != 1)
         throwToolExit('When using --start-paused, you must specify a single test file to run.', exitCode: 1);

packages/flutter_tools/lib/src/test/flutter_platform.dart

@@ -451,6 +451,7 @@ void main() {
       '--enable-dart-profiling',
       '--non-interactive',
       '--enable-checked-mode',
+      '--use-test-fonts',
       '--packages=$packages',
       testPath,
     ]);