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Issue 29796555: Issue 6621 (Closed)
Patch Set: Remaining change from p3 and changes from p4 Created June 14, 2018, 1:36 p.m.
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1 "use strict";
2
3 {
4 const {IO} = require("io");
5
6 const testFileNames = {
7 testData: "testData",
8 simpleCheck: "simpleCheck",
9 write: "writeCheck",
10 read: "readCheck",
11 rename: "renameCheck"
12 };
13 const testData = {
14 fileName: "file:" + testFileNames.testData,
15 content: [1, 2, 3],
16 lastModified: Date.now()
17 };
18
19 QUnit.module("IO tests", {
20 beforeEach()
21 {
22 return prePopulateStorage();
23 },
24 afterEach()
25 {
26 return clearStorage();
27 }
28 });
29
30 test("statFile", assert =>
31 {
32 const noFileMsg = "returns correct value if file doesn't exist";
33 const fileExistsMsg = "returns correct value if file exists";
34
35 ok(IO.statFile(testFileNames.simpleCheck) instanceof Promise,
36 "returns a promise");
37
38 asyncReadHelper(
39 IO.statFile,
40 testFileNames.testData,
41 {exists: true, lastModified: testData.lastModified},
42 fileExistsMsg,
43 assert);
44
45 asyncReadHelper(
46 IO.statFile,
47 testFileNames.simpleCheck,
48 {exists: false},
49 noFileMsg,
50 assert);
51 });
52
53 test("writeToFile", assert =>
54 {
55 ok(IO.writeToFile(testFileNames.simpleCheck, ["test"]) instanceof Promise,
56 "returns a promise");
57
58 writesCorrectValue(assert);
59 });
60
61 function writesCorrectValue(assert)
62 {
63 const writeCheck = {
64 fileName: "file:writeCheck",
65 content: [1, 2, 3],
66 lastModified: Date.now()
67 };
68 let done = assert.async();
69
70 IO.writeToFile(testFileNames.write, writeCheck.content)
71 .then(() => readFromStorage(writeCheck.fileName))
72 .then(result =>
73 {
74 deepEqual(
75 Object.keys(writeCheck),
76 Object.keys(result),
77 "data is written in the correct format");
78
79 deepEqual(
80 writeCheck.content,
81 result.content,
82 "data has the correct content");
83 done();
84 });
85 }
86
87 test("readFromFile", assert =>
88 {
89 const noFileMsg = "returns correct value if file doesn't exist";
90
91 ok(IO.readFromFile(testFileNames.simpleCheck) instanceof Promise,
92 "returns a promise");
93
94 asyncReadHelper(
95 IO.readFromFile,
96 testFileNames.read,
97 {type: "NoSuchFile"},
98 noFileMsg,
99 assert
100 );
101
102 callsListeners(assert);
103 });
104
105 function callsListeners(assert)
106 {
107 let done = assert.async();
108 let called = [];
109
110 IO.readFromFile(testFileNames.testData, (entry) => called.push(entry))
111 .then(() =>
112 {
113 deepEqual(
114 called,
115 testData.content,
116 "calls listeners with the correct values");
117 done();
118 });
119 }
120
121 test("renameFile", assert =>
122 {
123 ok(IO.renameFile(testFileNames.simpleCheck) instanceof Promise,
124 "returns a promise");
125
126 checkRename(assert);
127 });
128
129 function checkRename(assert)
130 {
131 let done = assert.async();
132 const expected = {
133 fileName: "file:" + testFileNames.rename,
134 content: testData.content,
135 lastModified: testData.lastModified
136 };
137
138 IO.renameFile(testFileNames.testData, testFileNames.rename)
139 .then(() => readFromStorage("file:" + testFileNames.rename))
140 .then(result =>
141 {
142 deepEqual(result, expected, "overrites file");
143 done();
144 });
145 }
146
147 function asyncReadHelper(method, fileName, expectedValue, description, assert)
148 {
149 let done = assert.async();
150 method(fileName)
151 .then(result =>
152 {
153 deepEqual(result, expectedValue, description);
154 done();
155 })
156 .catch(error =>
157 {
158 deepEqual(error, expectedValue, description);
159 done();
160 });
161 }
162
163 function readFromStorage(fileName)
164 {
165 return new Promise(resolve =>
166 {
167 let db;
168 let req = indexedDB.open("adblockplus", 1);
169 req.onsuccess = (event) =>
170 {
171 db = event.currentTarget.result;
172 let store = db
173 .transaction(["file"], "readwrite")
174 .objectStore("file");
175
176 store.get(fileName).onsuccess = (evt =>
177 resolve(evt.currentTarget.result)
178 );
179 };
180 });
181 }
182
183 function prePopulateStorage()
184 {
185 return new Promise(resolve =>
186 {
187 let db;
188 let req = indexedDB.open("adblockplus", 1);
189
190 req.onsuccess = (event) =>
191 {
192 db = event.currentTarget.result;
193 let store = db
194 .transaction(["file"], "readwrite")
195 .objectStore("file");
196
197 store.put(testData).onsuccess = resolve;
198 };
199 });
200 }
201
202 function clearStorage()
203 {
204 return new Promise(resolve =>
205 {
206 let db;
207 let req = indexedDB.open("adblockplus", 1);
208
209 req.onsuccess = (event) =>
210 {
211 db = event.currentTarget.result;
212 let files = Object.keys(testFileNames)
213 .map(fileName => new Promise((resolveFile, reject) =>
214 {
215 let store = db
216 .transaction(["file"], "readwrite")
217 .objectStore("file");
218
219 store.delete("file:" + fileName).onsuccess = resolveFile;
220 }));
221
222 Promise.all(files).then(resolve);
223 };
224 });
225 }
226 }
227
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