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comparison: netwerk/test/unit/test_mismatch_last-modified.js

netwerk/test/unit/test_mismatch_last-modified.js

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1 Cu.import("resource://testing-common/httpd.js");
2 var httpserver = new HttpServer();
3
4 var ios;
5
6 // Test the handling of a cache revalidation with mismatching last-modified
7 // headers. If we get such a revalidation the cache entry should be purged.
8 // see bug 717350
9
10 // In this test the wrong data is from 11-16-1994 with a value of 'A',
11 // and the right data is from 11-15-1994 with a value of 'B'.
12
13 // the same URL is requested 3 times. the first time the wrong data comes
14 // back, the second time that wrong data is revalidated with a 304 but
15 // a L-M header of the right data (this triggers a cache purge), and
16 // the third time the right data is returned.
17
18 var listener_3 = {
19 // this listener is used to process the the request made after
20 // the cache invalidation. it expects to see the 'right data'
21
22 QueryInterface: function(iid) {
23 if (iid.equals(Components.interfaces.nsIStreamListener) ||
24 iid.equals(Components.interfaces.nsIRequestObserver) ||
25 iid.equals(Components.interfaces.nsISupports))
26 return this;
27 throw Components.results.NS_ERROR_NO_INTERFACE;
28 },
29
30 onStartRequest: function test_onStartR(request, ctx) {},
31
32 onDataAvailable: function test_ODA(request, cx, inputStream,
33 offset, count) {
34 var data = new BinaryInputStream(inputStream).readByteArray(count);
35
36 do_check_eq(data[0], "B".charCodeAt(0));
37 },
38
39 onStopRequest: function test_onStopR(request, ctx, status) {
40 httpserver.stop(do_test_finished);
41 }
42 };
43
44 XPCOMUtils.defineLazyGetter(this, "listener_2", function() {
45 return {
46 // this listener is used to process the revalidation of the
47 // corrupted cache entry. its revalidation prompts it to be cleaned
48
49 QueryInterface: function(iid) {
50 if (iid.equals(Components.interfaces.nsIStreamListener) ||
51 iid.equals(Components.interfaces.nsIRequestObserver) ||
52 iid.equals(Components.interfaces.nsISupports))
53 return this;
54 throw Components.results.NS_ERROR_NO_INTERFACE;
55 },
56
57 onStartRequest: function test_onStartR(request, ctx) {},
58
59 onDataAvailable: function test_ODA(request, cx, inputStream,
60 offset, count) {
61 var data = new BinaryInputStream(inputStream).readByteArray(count);
62
63 // This is 'A' from a cache revalidation, but that reval will clean the cache
64 // because of mismatched last-modified response headers
65
66 do_check_eq(data[0], "A".charCodeAt(0));
67 },
68
69 onStopRequest: function test_onStopR(request, ctx, status) {
70 var channel = request.QueryInterface(Ci.nsIHttpChannel);
71
72 var chan = ios.newChannel("http://localhost:" +
73 httpserver.identity.primaryPort +
74 "/test1", "", null);
75 chan.asyncOpen(listener_3, null);
76 }
77 };
78 });
79
80 XPCOMUtils.defineLazyGetter(this, "listener_1", function() {
81 return {
82 // this listener processes the initial request from a empty cache.
83 // the server responds with the wrong data ('A')
84
85 QueryInterface: function(iid) {
86 if (iid.equals(Components.interfaces.nsIStreamListener) ||
87 iid.equals(Components.interfaces.nsIRequestObserver) ||
88 iid.equals(Components.interfaces.nsISupports))
89 return this;
90 throw Components.results.NS_ERROR_NO_INTERFACE;
91 },
92
93 onStartRequest: function test_onStartR(request, ctx) {},
94
95 onDataAvailable: function test_ODA(request, cx, inputStream,
96 offset, count) {
97 var data = new BinaryInputStream(inputStream).readByteArray(count);
98 do_check_eq(data[0], "A".charCodeAt(0));
99 },
100
101 onStopRequest: function test_onStopR(request, ctx, status) {
102 var channel = request.QueryInterface(Ci.nsIHttpChannel);
103
104 var chan = ios.newChannel("http://localhost:" +
105 httpserver.identity.primaryPort +
106 "/test1", "", null);
107 chan.asyncOpen(listener_2, null);
108 }
109 };
110 });
111
112 function run_test() {
113 do_get_profile();
114 ios = Cc["@mozilla.org/network/io-service;1"]
115 .getService(Ci.nsIIOService);
116
117 evict_cache_entries();
118
119 httpserver.registerPathHandler("/test1", handler);
120 httpserver.start(-1);
121
122 var port = httpserver.identity.primaryPort;
123
124 var chan = ios.newChannel("http://localhost:" + port + "/test1", "", null);
125 chan.asyncOpen(listener_1, null);
126
127 do_test_pending();
128 }
129
130 var iter=0;
131 function handler(metadata, response) {
132 iter++;
133 if (metadata.hasHeader("If-Modified-Since")) {
134 response.setStatusLine(metadata.httpVersion, 304, "Not Modified");
135 response.setHeader("Last-Modified", "Tue, 15 Nov 1994 12:45:26 GMT", false);
136 }
137 else {
138 response.setStatusLine(metadata.httpVersion, 200, "OK");
139 response.setHeader("Cache-Control", "max-age=0", false)
140 if (iter == 1) {
141 // simulated wrong response
142 response.setHeader("Last-Modified", "Wed, 16 Nov 1994 00:00:00 GMT", false);
143 response.bodyOutputStream.write("A", 1);
144 }
145 if (iter == 3) {
146 // 'correct' response
147 response.setHeader("Last-Modified", "Tue, 15 Nov 1994 12:45:26 GMT", false);
148 response.bodyOutputStream.write("B", 1);
149 }
150 }
151 }

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