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1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#import <Cocoa/Cocoa.h>
6
7#include "base/memory/scoped_ptr.h"
8#include "base/strings/string_util.h"
9#include "base/strings/utf_string_conversions.h"
10#include "content/browser/accessibility/browser_accessibility_cocoa.h"
11#include "content/browser/accessibility/browser_accessibility_manager.h"
12#include "content/browser/accessibility/browser_accessibility_manager_mac.h"
13#include "testing/gtest/include/gtest/gtest.h"
14#import "testing/gtest_mac.h"
15#import "ui/base/test/ui_cocoa_test_helper.h"
16
17@interface MockAccessibilityDelegate :
18    NSView<BrowserAccessibilityDelegateCocoa>
19
20- (NSPoint)accessibilityPointInScreen:(NSPoint)origin
21                                 size:(NSSize)size;
22- (void)doDefaultAction:(int32)accessibilityObjectId;
23- (void)accessibilitySetTextSelection:(int32)accId
24                          startOffset:(int32)startOffset
25                            endOffset:(int32)endOffset;
26- (void)performShowMenuAction:(BrowserAccessibilityCocoa*)accessibility;
27- (void)setAccessibilityFocus:(BOOL)focus
28              accessibilityId:(int32)accessibilityObjectId;
29- (NSWindow*)window;
30
31@end
32
33@implementation MockAccessibilityDelegate
34
35- (NSPoint)accessibilityPointInScreen:(NSPoint)origin
36                                 size:(NSSize)size {
37  return NSZeroPoint;
38}
39- (void)doDefaultAction:(int32)accessibilityObjectId {
40}
41- (void)accessibilitySetTextSelection:(int32)accId
42                          startOffset:(int32)startOffset
43                            endOffset:(int32)endOffset {
44}
45- (void)performShowMenuAction:(BrowserAccessibilityCocoa*)accessibility {
46}
47- (void)setAccessibilityFocus:(BOOL)focus
48              accessibilityId:(int32)accessibilityObjectId {
49}
50- (NSWindow*)window {
51  return nil;
52}
53
54@end
55
56namespace content {
57
58class BrowserAccessibilityTest : public ui::CocoaTest {
59 public:
60  virtual void SetUp() {
61    CocoaTest::SetUp();
62    RebuildAccessibilityTree();
63  }
64
65 protected:
66  void RebuildAccessibilityTree() {
67    AccessibilityNodeData root;
68    root.id = 1000;
69    root.location.set_width(500);
70    root.location.set_height(100);
71    root.role = blink::WebAXRoleRootWebArea;
72    root.AddStringAttribute(AccessibilityNodeData::ATTR_HELP, "HelpText");
73    root.child_ids.push_back(1001);
74    root.child_ids.push_back(1002);
75
76    AccessibilityNodeData child1;
77    child1.id = 1001;
78    child1.SetName("Child1");
79    child1.location.set_width(250);
80    child1.location.set_height(100);
81    child1.role = blink::WebAXRoleButton;
82
83    AccessibilityNodeData child2;
84    child2.id = 1002;
85    child2.location.set_x(250);
86    child2.location.set_width(250);
87    child2.location.set_height(100);
88    child2.role = blink::WebAXRoleHeading;
89
90    delegate_.reset([[MockAccessibilityDelegate alloc] init]);
91    manager_.reset(
92        new BrowserAccessibilityManagerMac(delegate_, root, NULL));
93    manager_->UpdateNodesForTesting(child1, child2);
94    accessibility_.reset([manager_->GetRoot()->ToBrowserAccessibilityCocoa()
95        retain]);
96  }
97
98  base::scoped_nsobject<MockAccessibilityDelegate> delegate_;
99  base::scoped_nsobject<BrowserAccessibilityCocoa> accessibility_;
100  scoped_ptr<BrowserAccessibilityManager> manager_;
101};
102
103// Standard hit test.
104TEST_F(BrowserAccessibilityTest, HitTestTest) {
105  BrowserAccessibilityCocoa* firstChild =
106      [accessibility_ accessibilityHitTest:NSMakePoint(50, 50)];
107  EXPECT_NSEQ(@"Child1",
108      [firstChild accessibilityAttributeValue:NSAccessibilityTitleAttribute]);
109}
110
111// Test doing a hit test on the edge of a child.
112TEST_F(BrowserAccessibilityTest, EdgeHitTest) {
113  BrowserAccessibilityCocoa* firstChild =
114      [accessibility_ accessibilityHitTest:NSZeroPoint];
115  EXPECT_NSEQ(@"Child1",
116      [firstChild accessibilityAttributeValue:NSAccessibilityTitleAttribute]);
117}
118
119// This will test a hit test with invalid coordinates.  It is assumed that
120// the hit test has been narrowed down to this object or one of its children
121// so it should return itself since it has no better hit result.
122TEST_F(BrowserAccessibilityTest, InvalidHitTestCoordsTest) {
123  BrowserAccessibilityCocoa* hitTestResult =
124      [accessibility_ accessibilityHitTest:NSMakePoint(-50, 50)];
125  EXPECT_NSEQ(accessibility_, hitTestResult);
126}
127
128// Test to ensure querying standard attributes works.
129TEST_F(BrowserAccessibilityTest, BasicAttributeTest) {
130  NSString* helpText = [accessibility_
131      accessibilityAttributeValue:NSAccessibilityHelpAttribute];
132  EXPECT_NSEQ(@"HelpText", helpText);
133}
134
135// Test querying for an invalid attribute to ensure it doesn't crash.
136TEST_F(BrowserAccessibilityTest, InvalidAttributeTest) {
137  NSString* shouldBeNil = [accessibility_
138      accessibilityAttributeValue:@"NSAnInvalidAttribute"];
139  EXPECT_TRUE(shouldBeNil == nil);
140}
141
142TEST_F(BrowserAccessibilityTest, RetainedDetachedObjectsReturnNil) {
143  // Get the first child.
144  BrowserAccessibilityCocoa* retainedFirstChild =
145      [accessibility_ accessibilityHitTest:NSMakePoint(50, 50)];
146  EXPECT_NSEQ(@"Child1", [retainedFirstChild
147      accessibilityAttributeValue:NSAccessibilityTitleAttribute]);
148
149  // Retain it. This simulates what the system might do with an
150  // accessibility object.
151  [retainedFirstChild retain];
152
153  // Rebuild the accessibility tree, which should detach |retainedFirstChild|.
154  RebuildAccessibilityTree();
155
156  // Now any attributes we query should return nil.
157  EXPECT_EQ(nil, [retainedFirstChild
158      accessibilityAttributeValue:NSAccessibilityTitleAttribute]);
159
160  // Don't leak memory in the test.
161  [retainedFirstChild release];
162}
163
164}  // namespace content
165