floating_action_button_test.dart 25.6 KB
Newer Older
1 2 3 4
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

5
@TestOn('!chrome') // whole file needs triage.
6 7
import 'dart:ui';

8
import 'package:flutter/material.dart';
9
import 'package:flutter/rendering.dart';
10 11
import 'package:flutter_test/flutter_test.dart';

12
import '../rendering/mock_canvas.dart';
13 14
import '../widgets/semantics_tester.dart';

15
void main() {
Ian Hickson's avatar
Ian Hickson committed
16
  testWidgets('Floating Action Button control test', (WidgetTester tester) async {
17 18
    bool didPressButton = false;
    await tester.pumpWidget(
19
      Directionality(
Ian Hickson's avatar
Ian Hickson committed
20
        textDirection: TextDirection.ltr,
21 22
        child: Center(
          child: FloatingActionButton(
Ian Hickson's avatar
Ian Hickson committed
23 24 25 26 27
            onPressed: () {
              didPressButton = true;
            },
            child: const Icon(Icons.add),
          ),
28 29
        ),
      ),
30 31 32 33 34 35
    );

    expect(didPressButton, isFalse);
    await tester.tap(find.byType(Icon));
    expect(didPressButton, isTrue);
  });
36 37 38

  testWidgets('Floating Action Button tooltip', (WidgetTester tester) async {
    await tester.pumpWidget(
39
      MaterialApp(
40
        home: Scaffold(
41
          floatingActionButton: FloatingActionButton(
42
            onPressed: () {},
43
            tooltip: 'Add',
44
            child: const Icon(Icons.add),
45 46 47 48 49 50 51 52
          ),
        ),
      ),
    );

    await tester.tap(find.byType(Icon));
    expect(find.byTooltip('Add'), findsOneWidget);
  });
53

54 55 56
  // Regression test for: https://github.com/flutter/flutter/pull/21084
  testWidgets('Floating Action Button tooltip (long press button edge)', (WidgetTester tester) async {
    await tester.pumpWidget(
57
      MaterialApp(
58
        home: Scaffold(
59
          floatingActionButton: FloatingActionButton(
60
            onPressed: () {},
61
            tooltip: 'Add',
62
            child: const Icon(Icons.add),
63 64 65 66 67 68 69 70 71 72 73 74 75 76 77
          ),
        ),
      ),
    );

    expect(find.text('Add'), findsNothing);
    await tester.longPressAt(_rightEdgeOfFab(tester));
    await tester.pumpAndSettle();

    expect(find.text('Add'), findsOneWidget);
  });

  // Regression test for: https://github.com/flutter/flutter/pull/21084
  testWidgets('Floating Action Button tooltip (long press button edge - no child)', (WidgetTester tester) async {
    await tester.pumpWidget(
78
      MaterialApp(
79
        home: Scaffold(
80
          floatingActionButton: FloatingActionButton(
81
            onPressed: () {},
82 83 84 85 86 87 88 89 90 91 92 93 94
            tooltip: 'Add',
          ),
        ),
      ),
    );

    expect(find.text('Add'), findsNothing);
    await tester.longPressAt(_rightEdgeOfFab(tester));
    await tester.pumpAndSettle();

    expect(find.text('Add'), findsOneWidget);
  });

95 96
  testWidgets('Floating Action Button tooltip (no child)', (WidgetTester tester) async {
    await tester.pumpWidget(
97
      MaterialApp(
98
        home: Scaffold(
99
          floatingActionButton: FloatingActionButton(
100
            onPressed: () {},
101 102 103 104 105 106
            tooltip: 'Add',
          ),
        ),
      ),
    );

107
    expect(find.text('Add'), findsNothing);
108 109

    // Test hover for tooltip.
110
    TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
111
    await gesture.addPointer();
112
    addTearDown(() => gesture?.removePointer());
113 114 115 116 117 118 119
    await gesture.moveTo(tester.getCenter(find.byType(FloatingActionButton)));
    await tester.pumpAndSettle();

    expect(find.text('Add'), findsOneWidget);

    await gesture.moveTo(Offset.zero);
    await gesture.removePointer();
120
    gesture = null;
121 122 123 124 125
    await tester.pumpAndSettle();

    expect(find.text('Add'), findsNothing);

    // Test long press for tooltip.
126
    await tester.longPress(find.byType(FloatingActionButton));
127
    await tester.pumpAndSettle();
128

129
    expect(find.text('Add'), findsOneWidget);
130 131
  });

132 133 134 135 136 137 138 139 140 141 142 143 144 145 146
  testWidgets('Floating Action Button tooltip reacts when disabled', (WidgetTester tester) async {
    await tester.pumpWidget(
      const MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
            onPressed: null,
            tooltip: 'Add',
          ),
        ),
      ),
    );

    expect(find.text('Add'), findsNothing);

    // Test hover for tooltip.
147 148 149 150 151 152 153 154 155 156 157
    TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
    await gesture.addPointer();
    addTearDown(() => gesture?.removePointer());
    await gesture.moveTo(tester.getCenter(find.byType(FloatingActionButton)));
    await tester.pumpAndSettle();

    expect(find.text('Add'), findsOneWidget);

    await gesture.moveTo(Offset.zero);
    await gesture.removePointer();
    gesture = null;
158 159 160 161 162 163 164 165 166 167 168
    await tester.pumpAndSettle();

    expect(find.text('Add'), findsNothing);

    // Test long press for tooltip.
    await tester.longPress(find.byType(FloatingActionButton));
    await tester.pumpAndSettle();

    expect(find.text('Add'), findsOneWidget);
  });

169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189
  testWidgets('Floating Action Button elevation when highlighted - effect', (WidgetTester tester) async {
    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
            onPressed: () { },
          ),
        ),
      ),
    );
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
    final TestGesture gesture = await tester.press(find.byType(PhysicalShape));
    await tester.pump();
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
    await tester.pump(const Duration(seconds: 1));
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 12.0);
    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
            onPressed: () { },
190
            highlightElevation: 20.0,
191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206
          ),
        ),
      ),
    );
    await tester.pump();
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 12.0);
    await tester.pump(const Duration(seconds: 1));
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 20.0);
    await gesture.up();
    await tester.pump();
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 20.0);
    await tester.pump(const Duration(seconds: 1));
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
  });

  testWidgets('Floating Action Button elevation when disabled - defaults', (WidgetTester tester) async {
207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233
    await tester.pumpWidget(
      const MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
            onPressed: null,
          ),
        ),
      ),
    );

    // Disabled elevation defaults to regular default elevation.
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
  });

  testWidgets('Floating Action Button elevation when disabled - override', (WidgetTester tester) async {
    await tester.pumpWidget(
      const MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
            onPressed: null,
            disabledElevation: 0,
          ),
        ),
      ),
    );

    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 0.0);
234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318
  });

  testWidgets('Floating Action Button elevation when disabled - effect', (WidgetTester tester) async {
    await tester.pumpWidget(
      const MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
            onPressed: null,
          ),
        ),
      ),
    );
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
    await tester.pumpWidget(
      const MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
            onPressed: null,
            disabledElevation: 3.0,
          ),
        ),
      ),
    );
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
    await tester.pump(const Duration(seconds: 1));
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 3.0);
    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
            onPressed: () { },
            disabledElevation: 3.0,
          ),
        ),
      ),
    );
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 3.0);
    await tester.pump(const Duration(seconds: 1));
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
  });

  testWidgets('Floating Action Button elevation when disabled while highlighted - effect', (WidgetTester tester) async {
    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
            onPressed: () { },
          ),
        ),
      ),
    );
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
    await tester.press(find.byType(PhysicalShape));
    await tester.pump();
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
    await tester.pump(const Duration(seconds: 1));
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 12.0);
    await tester.pumpWidget(
      const MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
            onPressed: null,
          ),
        ),
      ),
    );
    await tester.pump();
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 12.0);
    await tester.pump(const Duration(seconds: 1));
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
            onPressed: () { },
          ),
        ),
      ),
    );
    await tester.pump();
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
    await tester.pump(const Duration(seconds: 1));
    expect(tester.widget<PhysicalShape>(find.byType(PhysicalShape)).elevation, 6.0);
  });

319
  testWidgets('FlatActionButton mini size is configurable by ThemeData.materialTapTargetSize', (WidgetTester tester) async {
320
    final Key key1 = UniqueKey();
321
    await tester.pumpWidget(
322 323 324 325 326
      MaterialApp(
        home: Theme(
          data: ThemeData(materialTapTargetSize: MaterialTapTargetSize.padded),
          child: Scaffold(
            floatingActionButton: FloatingActionButton(
327 328 329 330 331 332 333 334 335 336 337
              key: key1,
              mini: true,
              onPressed: null,
            ),
          ),
        ),
      ),
    );

    expect(tester.getSize(find.byKey(key1)), const Size(48.0, 48.0));

338
    final Key key2 = UniqueKey();
339
    await tester.pumpWidget(
340 341 342 343 344
      MaterialApp(
        home: Theme(
          data: ThemeData(materialTapTargetSize: MaterialTapTargetSize.shrinkWrap),
          child: Scaffold(
            floatingActionButton: FloatingActionButton(
345 346 347 348 349 350 351 352 353 354 355 356
              key: key2,
              mini: true,
              onPressed: null,
            ),
          ),
        ),
      ),
    );

    expect(tester.getSize(find.byKey(key2)), const Size(40.0, 40.0));
  });

357 358
  testWidgets('FloatingActionButton.isExtended', (WidgetTester tester) async {
    await tester.pumpWidget(
359 360
      const MaterialApp(
        home: Scaffold(
361
          floatingActionButton: FloatingActionButton(onPressed: null),
362 363 364 365 366 367 368 369 370 371
        ),
      ),
    );

    final Finder fabFinder = find.byType(FloatingActionButton);

    FloatingActionButton getFabWidget() {
      return tester.widget<FloatingActionButton>(fabFinder);
    }

372 373 374 375 376 377
    final Finder materialButtonFinder = find.byType(RawMaterialButton);

    RawMaterialButton getRawMaterialButtonWidget() {
      return tester.widget<RawMaterialButton>(materialButtonFinder);
    }

378
    expect(getFabWidget().isExtended, false);
379
    expect(getRawMaterialButtonWidget().shape, const CircleBorder());
380 381

    await tester.pumpWidget(
382 383 384
      MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton.extended(
385 386
            label: const SizedBox(
              width: 100.0,
387
              child: Text('label'),
388
            ),
389 390 391 392 393 394 395 396
            icon: const Icon(Icons.android),
            onPressed: null,
          ),
        ),
      ),
    );

    expect(getFabWidget().isExtended, true);
397
    expect(getRawMaterialButtonWidget().shape, const StadiumBorder());
398 399 400 401 402 403
    expect(find.text('label'), findsOneWidget);
    expect(find.byType(Icon), findsOneWidget);

    // Verify that the widget's height is 48 and that its internal
    /// horizontal layout is: 16 icon 8 label 20
    expect(tester.getSize(fabFinder).height, 48.0);
404

405 406 407 408 409 410 411 412 413
    final double fabLeft = tester.getTopLeft(fabFinder).dx;
    final double fabRight = tester.getTopRight(fabFinder).dx;
    final double iconLeft = tester.getTopLeft(find.byType(Icon)).dx;
    final double iconRight = tester.getTopRight(find.byType(Icon)).dx;
    final double labelLeft = tester.getTopLeft(find.text('label')).dx;
    final double labelRight = tester.getTopRight(find.text('label')).dx;
    expect(iconLeft - fabLeft, 16.0);
    expect(labelLeft - iconRight, 8.0);
    expect(fabRight - labelRight, 20.0);
414 415 416 417 418 419

    // The overall width of the button is:
    // 168 = 16 + 24(icon) + 8 + 100(label) + 20
    expect(tester.getSize(find.byType(Icon)).width, 24.0);
    expect(tester.getSize(find.text('label')).width, 100.0);
    expect(tester.getSize(fabFinder).width, 168);
420 421
  });

422 423 424 425 426 427 428
  testWidgets('FloatingActionButton.isExtended (without icon)', (WidgetTester tester) async {
    final Finder fabFinder = find.byType(FloatingActionButton);

    FloatingActionButton getFabWidget() {
      return tester.widget<FloatingActionButton>(fabFinder);
    }

429 430 431 432 433 434
    final Finder materialButtonFinder = find.byType(RawMaterialButton);

    RawMaterialButton getRawMaterialButtonWidget() {
      return tester.widget<RawMaterialButton>(materialButtonFinder);
    }

435 436 437 438 439 440 441 442 443 444 445 446 447 448 449
    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton.extended(
            label: const SizedBox(
              width: 100.0,
              child: Text('label'),
            ),
            onPressed: null,
          ),
        ),
      ),
    );

    expect(getFabWidget().isExtended, true);
450
    expect(getRawMaterialButtonWidget().shape, const StadiumBorder());
451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470
    expect(find.text('label'), findsOneWidget);
    expect(find.byType(Icon), findsNothing);

    // Verify that the widget's height is 48 and that its internal
    /// horizontal layout is: 20 label 20
    expect(tester.getSize(fabFinder).height, 48.0);

    final double fabLeft = tester.getTopLeft(fabFinder).dx;
    final double fabRight = tester.getTopRight(fabFinder).dx;
    final double labelLeft = tester.getTopLeft(find.text('label')).dx;
    final double labelRight = tester.getTopRight(find.text('label')).dx;
    expect(labelLeft - fabLeft, 20.0);
    expect(fabRight - labelRight, 20.0);

    // The overall width of the button is:
    // 140 = 20 + 100(label) + 20
    expect(tester.getSize(find.text('label')).width, 100.0);
    expect(tester.getSize(fabFinder).width, 140);
  });

471 472 473
  testWidgets('Floating Action Button heroTag', (WidgetTester tester) async {
    BuildContext theContext;
    await tester.pumpWidget(
474 475 476
      MaterialApp(
        home: Scaffold(
          body: Builder(
477 478 479 480 481 482 483 484 485
            builder: (BuildContext context) {
              theContext = context;
              return const FloatingActionButton(heroTag: 1, onPressed: null);
            },
          ),
          floatingActionButton: const FloatingActionButton(heroTag: 2, onPressed: null),
        ),
      ),
    );
486
    Navigator.push(theContext, PageRouteBuilder<void>(
487 488 489 490 491 492 493 494 495 496
      pageBuilder: (BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation) {
        return const Placeholder();
      },
    ));
    await tester.pump(); // this would fail if heroTag was the same on both FloatingActionButtons (see below).
  });

  testWidgets('Floating Action Button heroTag - with duplicate', (WidgetTester tester) async {
    BuildContext theContext;
    await tester.pumpWidget(
497 498 499
      MaterialApp(
        home: Scaffold(
          body: Builder(
500 501 502 503 504 505 506 507 508
            builder: (BuildContext context) {
              theContext = context;
              return const FloatingActionButton(onPressed: null);
            },
          ),
          floatingActionButton: const FloatingActionButton(onPressed: null),
        ),
      ),
    );
509
    Navigator.push(theContext, PageRouteBuilder<void>(
510 511 512 513 514 515 516 517 518 519 520
      pageBuilder: (BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation) {
        return const Placeholder();
      },
    ));
    await tester.pump();
    expect(tester.takeException().toString(), contains('FloatingActionButton'));
  });

  testWidgets('Floating Action Button heroTag - with duplicate', (WidgetTester tester) async {
    BuildContext theContext;
    await tester.pumpWidget(
521 522 523
      MaterialApp(
        home: Scaffold(
          body: Builder(
524 525 526 527 528 529 530 531 532
            builder: (BuildContext context) {
              theContext = context;
              return const FloatingActionButton(heroTag: 'xyzzy', onPressed: null);
            },
          ),
          floatingActionButton: const FloatingActionButton(heroTag: 'xyzzy', onPressed: null),
        ),
      ),
    );
533
    Navigator.push(theContext, PageRouteBuilder<void>(
534 535 536 537 538 539 540
      pageBuilder: (BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation) {
        return const Placeholder();
      },
    ));
    await tester.pump();
    expect(tester.takeException().toString(), contains('xyzzy'));
  });
541 542

  testWidgets('Floating Action Button semantics (enabled)', (WidgetTester tester) async {
543
    final SemanticsTester semantics = SemanticsTester(tester);
544 545

    await tester.pumpWidget(
546
      Directionality(
547
        textDirection: TextDirection.ltr,
548 549
        child: Center(
          child: FloatingActionButton(
550 551 552 553 554 555 556
            onPressed: () { },
            child: const Icon(Icons.add, semanticLabel: 'Add'),
          ),
        ),
      ),
    );

557
    expect(semantics, hasSemantics(TestSemantics.root(
558
      children: <TestSemantics>[
559
        TestSemantics.rootChild(
560 561 562 563 564 565 566
          label: 'Add',
          flags: <SemanticsFlag>[
            SemanticsFlag.isButton,
            SemanticsFlag.hasEnabledState,
            SemanticsFlag.isEnabled,
          ],
          actions: <SemanticsAction>[
567
            SemanticsAction.tap,
568 569 570 571 572 573 574 575 576
          ],
        ),
      ],
    ), ignoreTransform: true, ignoreId: true, ignoreRect: true));

    semantics.dispose();
  });

  testWidgets('Floating Action Button semantics (disabled)', (WidgetTester tester) async {
577
    final SemanticsTester semantics = SemanticsTester(tester);
578 579 580 581

    await tester.pumpWidget(
      const Directionality(
        textDirection: TextDirection.ltr,
582 583
        child: Center(
          child: FloatingActionButton(
584
            onPressed: null,
585
            child: Icon(Icons.add, semanticLabel: 'Add'),
586 587 588 589 590
          ),
        ),
      ),
    );

591
    expect(semantics, hasSemantics(TestSemantics.root(
592
      children: <TestSemantics>[
593
        TestSemantics.rootChild(
594 595 596 597 598 599 600 601 602 603 604
          label: 'Add',
          flags: <SemanticsFlag>[
            SemanticsFlag.isButton,
            SemanticsFlag.hasEnabledState,
          ],
        ),
      ],
    ), ignoreTransform: true, ignoreId: true, ignoreRect: true));

    semantics.dispose();
  });
605

606
  testWidgets('Tooltip is used as semantics label', (WidgetTester tester) async {
607
    final SemanticsTester semantics = SemanticsTester(tester);
608 609

    await tester.pumpWidget(
610 611 612
      MaterialApp(
        home: Scaffold(
          floatingActionButton: FloatingActionButton(
613 614 615 616 617 618 619 620
            onPressed: () { },
            tooltip: 'Add Photo',
            child: const Icon(Icons.add_a_photo),
          ),
        ),
      ),
    );

621
    expect(semantics, hasSemantics(TestSemantics.root(
622
      children: <TestSemantics>[
623
        TestSemantics.rootChild(
624
          children: <TestSemantics>[
625
            TestSemantics(
626
              flags: <SemanticsFlag>[
627 628 629
                SemanticsFlag.scopesRoute,
              ],
              children: <TestSemantics>[
630
                TestSemantics(
631 632
                  label: 'Add Photo',
                  actions: <SemanticsAction>[
633
                    SemanticsAction.tap,
634 635 636 637 638 639 640
                  ],
                  flags: <SemanticsFlag>[
                    SemanticsFlag.isButton,
                    SemanticsFlag.hasEnabledState,
                    SemanticsFlag.isEnabled,
                  ],
                ),
641 642
              ],
            ),
643 644 645 646 647 648 649 650
          ],
        ),
      ],
    ), ignoreTransform: true, ignoreId: true, ignoreRect: true));

    semantics.dispose();
  });

651 652
  testWidgets('extended FAB hero transitions succeed', (WidgetTester tester) async {
    // Regression test for https://github.com/flutter/flutter/issues/18782
653

654
    await tester.pumpWidget(
655 656 657
      MaterialApp(
        home: Scaffold(
          floatingActionButton: Builder(
658
            builder: (BuildContext context) { // define context of Navigator.push()
659
              return FloatingActionButton.extended(
660 661 662
                icon: const Icon(Icons.add),
                label: const Text('A long FAB label'),
                onPressed: () {
663
                  Navigator.push(context, MaterialPageRoute<void>(
664
                    builder: (BuildContext context) {
665 666
                      return Scaffold(
                        floatingActionButton: FloatingActionButton.extended(
667 668 669 670
                          icon: const Icon(Icons.add),
                          label: const Text('X'),
                          onPressed: () { },
                        ),
671 672
                        body: Center(
                          child: RaisedButton(
673 674 675 676 677 678 679 680 681 682 683 684 685 686
                            child: const Text('POP'),
                            onPressed: () {
                              Navigator.pop(context);
                            },
                          ),
                        ),
                      );
                    },
                  ));
                },
              );
            },
          ),
          body: const Center(
687
            child: Text('Hello World'),
688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714
          ),
        ),
      ),
    );

    final Finder longFAB = find.text('A long FAB label');
    final Finder shortFAB = find.text('X');
    final Finder helloWorld = find.text('Hello World');

    expect(longFAB, findsOneWidget);
    expect(shortFAB, findsNothing);
    expect(helloWorld, findsOneWidget);

    await tester.tap(longFAB);
    await tester.pumpAndSettle();

    expect(shortFAB, findsOneWidget);
    expect(longFAB, findsNothing);

    // Trigger a hero transition from shortFAB to longFAB.
    await tester.tap(find.text('POP'));
    await tester.pumpAndSettle();

    expect(longFAB, findsOneWidget);
    expect(shortFAB, findsNothing);
    expect(helloWorld, findsOneWidget);
  });
715 716 717

  // This test prevents https://github.com/flutter/flutter/issues/20483
  testWidgets('Floating Action Button clips ink splash and highlight', (WidgetTester tester) async {
718
    final GlobalKey key = GlobalKey();
719
    await tester.pumpWidget(
720 721 722 723
      MaterialApp(
        home: Scaffold(
          body: Center(
            child: RepaintBoundary(
724
              key: key,
725
              child: FloatingActionButton(
726
                onPressed: () { },
727 728 729 730 731 732 733 734 735 736 737 738 739
                child: const Icon(Icons.add),
              ),
            ),
          ),
        ),
      ),
    );

    await tester.press(find.byKey(key));
    await tester.pump();
    await tester.pump(const Duration(milliseconds: 1000));
    await expectLater(
      find.byKey(key),
740 741 742 743
      matchesGoldenFile(
        'floating_action_button_test.clip.png',
        version: 2,
      ),
744 745
    );
  });
746

747
  testWidgets('Floating Action Button has no clip by default', (WidgetTester tester) async {
748
    final FocusNode focusNode = FocusNode();
749
    await tester.pumpWidget(
750
      Directionality(
751 752 753 754 755
        textDirection: TextDirection.ltr,
        child: Material(
          child: FloatingActionButton(
            focusNode: focusNode,
            onPressed: () { /* to make sure the button is enabled */ },
756
          ),
757
        ),
758 759 760
      ),
    );

761 762 763
    focusNode.unfocus();
    await tester.pump();

764
    expect(
765 766
      tester.renderObject(find.byType(FloatingActionButton)),
      paintsExactlyCountTimes(#clipPath, 0),
767 768
    );
  });
769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784

  testWidgets('Can find FloatingActionButton semantics', (WidgetTester tester) async {
    await tester.pumpWidget(MaterialApp(
      home: FloatingActionButton(onPressed: () {}),
    ));

    expect(
      tester.getSemantics(find.byType(FloatingActionButton)),
      matchesSemantics(
        hasTapAction: true,
        hasEnabledState: true,
        isButton: true,
        isEnabled: true,
      ),
    );
  }, semanticsEnabled: true);
785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801

  testWidgets('Foreground color applies to icon on fab', (WidgetTester tester) async {
    const Color foregroundColor = Color(0xcafefeed);

    await tester.pumpWidget(MaterialApp(
      home: FloatingActionButton(
        onPressed: () {},
        foregroundColor: foregroundColor,
        child: const Icon(Icons.access_alarm),
      ),
    ));

    final RichText iconRichText = tester.widget<RichText>(
      find.descendant(of: find.byIcon(Icons.access_alarm), matching: find.byType(RichText)),
    );
    expect(iconRichText.text.style.color, foregroundColor);
  });
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821

  testWidgets('FloatingActionButton uses custom splash color', (WidgetTester tester) async {
    const Color splashColor = Color(0xcafefeed);

    await tester.pumpWidget(MaterialApp(
      home: FloatingActionButton(
        onPressed: () {},
        splashColor: splashColor,
        child: const Icon(Icons.access_alarm),
      ),
    ));

    await tester.press(find.byType(FloatingActionButton));
    await tester.pumpAndSettle();

    expect(
      find.byType(FloatingActionButton),
      paints..circle(color: splashColor),
    );
  });
822
}
823 824 825 826 827

Offset _rightEdgeOfFab(WidgetTester tester) {
  final Finder fab = find.byType(FloatingActionButton);
  return tester.getRect(fab).centerRight - const Offset(1.0, 0.0);
}