docshell/test/chrome/bug321671_window.xul

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TOR_BUG_9701
changeset 15
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-1:000000000000 0:928dfb317f5c
1 <?xml version="1.0"?>
2 <?xml-stylesheet href="chrome://global/skin" type="text/css"?>
3
4 <window id="321671Test"
5 xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
6 width="600"
7 height="600"
8 onload="setTimeout(nextTest,0);"
9 title="bug 321671 test">
10
11 <script type="text/javascript"
12 src="chrome://mochikit/content/tests/SimpleTest/specialpowersAPI.js"/>
13 <script type="text/javascript"
14 src="chrome://mochikit/content/tests/SimpleTest/SpecialPowersObserverAPI.js"/>
15 <script type="text/javascript"
16 src="chrome://mochikit/content/tests/SimpleTest/ChromePowers.js"/>
17 <script type="application/javascript" src= "chrome://mochikit/content/chrome-harness.js" />
18 <script type="application/javascript" src="docshell_helpers.js" />
19 <script type="application/javascript"><![CDATA[
20
21 // Define the generator-iterator for the tests.
22 var tests = testIterator();
23
24 // Maximum number of entries in the bfcache for this session history.
25 // This number is hardcoded in docshell code. In the test, we'll
26 // navigate through enough pages so that we hit one that's been
27 // evicted from the bfcache because it's farther from the current
28 // page than this number.
29 const MAX_BFCACHE_PAGES = 3;
30
31 ////
32 // Execute the next test in the generator function.
33 //
34 function nextTest() {
35 tests.next();
36 }
37
38 ////
39 // Generator function for test steps for bug 321671: Scroll position
40 // should be retained when moving backwards and forwards through pages
41 // when bfcache is enabled.
42 //
43 function testIterator()
44 {
45 // Variable to hold the scroll positions of the test pages.
46 var scrollPositions = [];
47
48 // Make sure bfcache is on.
49 enableBFCache(true);
50
51 // Load enough test pages that so the first one is evicted from the
52 // bfcache, scroll down on each page, and save the
53 // current scroll position before continuing. Verify that each
54 // page we're navigating away from is initially put into the bfcache.
55 for (var i = 0; i <= MAX_BFCACHE_PAGES + 1; i++) {
56 doPageNavigation( {
57 uri: "data:text/html,<html><head><title>bug321671 page" + (i + 1) +
58 "</title></head>" +
59 "<body><table border='1' width='300' height='1000'>" +
60 "<tbody><tr><td>" +
61 " page " + (i + 1) + ": foobar foobar foobar foobar " +
62 "</td></tr></tbody></table> " +
63 "</body></html>",
64 eventsToListenFor: ["pageshow", "pagehide"],
65 expectedEvents: [ { type: "pagehide",
66 persisted: true,
67 title: i == 0 ?
68 undefined : "bug321671 page" + i },
69 { type: "pageshow",
70 title: "bug321671 page" + (i + 1) } ],
71 onNavComplete: nextTest
72 } );
73 yield undefined;
74
75 is(TestWindow.getWindow().scrollY, 0,
76 "Page initially has non-zero scrollY position");
77 TestWindow.getWindow().scrollByLines(10 + (2*i));
78 ok(TestWindow.getWindow().scrollY > 0,
79 "Page has zero scrollY position after scrolling");
80 scrollPositions[i] = TestWindow.getWindow().scrollY;
81 }
82
83 // Go back to the first page, one page at a time. For each 'back'
84 // action, verify that its vertical scroll position is restored
85 // correctly. Verify that the last page in the sequence
86 // does not come from the bfcache. Again verify that all pages
87 // that we navigate away from are initially
88 // stored in the bfcache.
89 for (i = MAX_BFCACHE_PAGES + 1; i > 0; i--) {
90 doPageNavigation( {
91 back: true,
92 eventsToListenFor: ["pageshow", "pagehide"],
93 expectedEvents: [ { type: "pagehide",
94 title: "bug321671 page" + (i+1),
95 persisted: true },
96 { type: "pageshow",
97 title: "bug321671 page" + i,
98 persisted: i > 1 } ],
99 onNavComplete: nextTest
100 } );
101 yield undefined;
102
103 is(TestWindow.getWindow().scrollY, scrollPositions[i-1],
104 "Scroll position not restored while going back!");
105 }
106
107 // Traverse history forward now, and verify scroll position is still
108 // restored. Similar to the backward traversal, verify that all
109 // but the last page in the sequence comes from the bfcache. Also
110 // verify that all of the pages get stored in the bfcache when we
111 // navigate away from them.
112 for (i = 1; i <= MAX_BFCACHE_PAGES + 1; i++) {
113 doPageNavigation( {
114 forward: true,
115 eventsToListenFor: ["pageshow", "pagehide"],
116 expectedEvents: [ { type: "pagehide",
117 persisted: true,
118 title: "bug321671 page" + i },
119 { type: "pageshow",
120 persisted: i < MAX_BFCACHE_PAGES + 1,
121 title: "bug321671 page" + (i + 1) } ],
122 onNavComplete: nextTest
123 } );
124 yield undefined;
125
126 is(TestWindow.getWindow().scrollY, scrollPositions[i],
127 "Scroll position not restored while going forward!");
128 }
129
130 // Tell the framework the test is finished. Include the final 'yield'
131 // statement to prevent a StopIteration exception from being thrown.
132 finish();
133 yield undefined;
134 }
135
136 ]]></script>
137
138 <browser type="content-primary" flex="1" id="content" src="about:blank"/>
139 </window>

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