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- Reintroduced shared test cases
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‎test/rewire.test.js‎

Lines changed: 13 additions & 167 deletions
Original file line numberDiff line numberDiff line change
@@ -2,178 +2,24 @@
22
// In case this module was in strict mode, all other modules called by this would also be strict.
33
// But when testing if the strict mode is preserved, we must ensure that this module is NOT strict.
44

5-
var path = require("path"),
6-
expect = require("expect.js"),
7-
rewire = require("../");
5+
var expect = require("expect.js");
86

9-
function checkForTypeError(err) {
10-
expect(err.constructor).to.be(TypeError);
11-
}
7+
var rewire;
128

139
describe("rewire", function () {
14-
it("should work like require()", function () {
15-
rewire("./testModules/moduleA.js").getFilename();
16-
require("./testModules/moduleA.js").getFilename();
17-
expect(rewire("./testModules/moduleA.js").getFilename()).to.eql(require("./testModules/moduleA.js").getFilename());
18-
expect(rewire("./testModules/someOtherModule.js").filename).to.eql(require("./testModules/someOtherModule.js").filename);
10+
it("should pass all shared test cases", function () {
11+
require("./testModules/sharedTestCases.js");
1912
});
20-
it("should return a fresh instance of the module", function () {
21-
var someOtherModule = require("./testModules/someOtherModule.js"),
22-
rewiredSomeOtherModule;
13+
it("should also work with CoffeeScript", function () {
14+
var coffeeModule;
2315

24-
someOtherModule.fs = "This has been modified";
25-
rewiredSomeOtherModule = rewire("./testModules/someOtherModule.js");
26-
expect(rewiredSomeOtherModule.fs).not.to.be("This has been modified");
27-
});
28-
it("should not cache the rewired module", function () {
29-
var rewired,
30-
someOtherModule = require("./testModules/someOtherModule.js");
31-
32-
someOtherModule.fs = "This has been changed";
33-
34-
rewired = rewire("./testModules/someOtherModule.js");
35-
expect(someOtherModule).not.to.be(rewired);
36-
expect(require("./testModules/moduleA.js").someOtherModule).not.to.be(rewired);
37-
expect(require("./testModules/moduleA.js").someOtherModule).to.be(someOtherModule);
38-
expect(require("./testModules/moduleA.js").someOtherModule.fs).to.be("This has been changed");
39-
});
40-
it("should modify the module so it provides a __set__ - function", function () {
41-
expect(rewire("./testModules/moduleA.js").__set__).to.be.a(Function);
42-
expect(rewire("./testModules/moduleB.js").__set__).to.be.a(Function);
43-
});
44-
it("should modify the module so it provides a __get__ - function", function () {
45-
expect(rewire("./testModules/moduleA.js").__get__).to.be.a(Function);
46-
expect(rewire("./testModules/moduleB.js").__get__).to.be.a(Function);
47-
});
48-
it("should not influence other modules", function () {
49-
var rewiredModuleA = rewire("./testModules/moduleA.js");
50-
51-
expect(require("./testModules/someOtherModule.js").__set__).to.be(undefined);
52-
expect(require("./testModules/someOtherModule.js").__get__).to.be(undefined);
53-
});
54-
it("should not override/influence global objects by default", function () {
55-
// This should throw no exception
56-
rewire("./testModules/moduleA.js").checkSomeGlobals();
57-
rewire("./testModules/moduleB.js").checkSomeGlobals();
58-
});
59-
it("should provide the ability to set private vars", function () {
60-
var rewiredModuleA = rewire("./testModules/moduleA.js"),
61-
newObj = {};
62-
63-
expect(rewiredModuleA.getMyNumber()).to.be(0);
64-
rewiredModuleA.__set__("myNumber", 2);
65-
expect(rewiredModuleA.getMyNumber()).to.be(2);
66-
rewiredModuleA.__set__("myObj", newObj);
67-
expect(rewiredModuleA.getMyObj()).to.be(newObj);
68-
rewiredModuleA.__set__("env", "ENVENV");
69-
});
70-
it("should provide the ability to get private vars", function () {
71-
var rewiredModuleA = rewire("./testModules/moduleA.js");
72-
73-
expect(rewiredModuleA.__get__("myNumber")).to.be(rewiredModuleA.getMyNumber());
74-
expect(rewiredModuleA.__get__("myObj")).to.be(rewiredModuleA.getMyObj());
75-
});
76-
it("should provide the ability to inject mocks", function (done) {
77-
var rewiredModuleA = rewire("./testModules/moduleA.js"),
78-
mockedFs = {
79-
readFileSync: function (file) {
80-
expect(file).to.be("bla.txt");
81-
done();
82-
}
83-
};
84-
85-
rewiredModuleA.__set__("fs", mockedFs);
86-
rewiredModuleA.readFileSync();
87-
});
88-
it("should not influence other modules when injecting mocks", function () {
89-
var rewiredModuleA = rewire("./testModules/moduleA.js"),
90-
someOtherModule,
91-
mockedFs = {};
92-
93-
rewiredModuleA.__set__("fs", mockedFs);
94-
someOtherModule = require("./testModules/someOtherModule.js");
95-
expect(someOtherModule.fs).not.to.be(mockedFs);
96-
});
97-
it("should provide the ability to mock global objects just within the module", function () {
98-
var rewiredModuleA = rewire("./testModules/moduleA.js"),
99-
rewiredModuleB = rewire("./testModules/moduleB.js"),
100-
consoleMock = {},
101-
bufferMock = {},
102-
documentMock = {},
103-
newFilename = "myFile.js";
104-
105-
rewiredModuleA.__set__({
106-
console: consoleMock,
107-
__filename: newFilename
108-
});
109-
expect(rewiredModuleA.getConsole()).to.be(consoleMock);
110-
expect(rewiredModuleB.getConsole()).not.to.be(consoleMock);
111-
expect(console).not.to.be(consoleMock);
112-
expect(rewiredModuleA.getFilename()).to.be(newFilename);
113-
expect(rewiredModuleB.getFilename()).not.to.be(newFilename);
114-
expect(console).not.to.be(newFilename);
115-
if (typeof window === "undefined") {
116-
rewiredModuleA.__set__("Buffer", bufferMock);
117-
expect(rewiredModuleA.getBuffer()).to.be(bufferMock);
118-
expect(rewiredModuleB.getBuffer()).not.to.be(bufferMock);
119-
expect(Buffer).not.to.be(bufferMock);
120-
} else {
121-
rewiredModuleA.__set__("document", documentMock);
122-
expect(rewiredModuleA.getDocument()).to.be(documentMock);
123-
expect(rewiredModuleB.getDocument() === documentMock).to.be(false);
124-
expect(document === documentMock).to.be(false);
125-
}
126-
});
127-
it("should be possible to mock global objects that are added on runtime", function () {
128-
var rewiredModule;
129-
130-
if (typeof window === "undefined") {
131-
global.someGlobalVar = "test";
132-
rewiredModule = rewire("./testModules/moduleA.js");
133-
rewiredModule.__set__("someGlobalVar", "other value");
134-
expect(global.someGlobalVar).to.be("test");
135-
expect(rewiredModule.__get__("someGlobalVar")).to.be("other value");
136-
delete global.someGlobalVar;
137-
} else {
138-
window.someGlobalVar = "test";
139-
rewiredModule = rewire("./testModules/moduleA.js");
140-
rewiredModule.__set__("someGlobalVar", "other value");
141-
expect(window.someGlobalVar).to.be("test");
142-
expect(rewiredModule.__get__("someGlobalVar")).to.be("other value");
143-
if (typeof navigator !== "undefined" && /MSIE [6-8]\.[0-9]/g.test(navigator.userAgent) === false) {
144-
delete window.someGlobalVar;
16+
rewire = require("../");
17+
coffeeModule = rewire("./testModules/module.coffee");
18+
coffeeModule.__set__("fs", {
19+
readFileSync: function () {
20+
return "It works!";
14521
}
146-
}
147-
});
148-
it("should not be a problem to have a comment on file end", function () {
149-
var rewired = rewire("./testModules/emptyModule.js");
150-
151-
rewired.__set__("someVar", "hello");
152-
expect(rewired.__get__("someVar")).to.be("hello");
153-
});
154-
it("should not influence the original require if nothing has been required within the rewired module", function () {
155-
rewire("./testModules/emptyModule.js"); // nothing happens here because emptyModule doesn't require anything
156-
expect(require("./testModules/moduleA.js").__set__).to.be(undefined); // if restoring the original node require didn't worked, the module would have a setter
157-
});
158-
it("subsequent calls of rewire should always return a new instance", function () {
159-
expect(rewire("./testModules/moduleA.js")).not.to.be(rewire("./testModules/moduleA.js"));
160-
});
161-
it("should preserve the strict mode (not IE)", function () {
162-
var strictModule = rewire("./testModules/strictModule.js");
163-
164-
expect(function () {
165-
strictModule.doSomethingUnstrict();
166-
}).to.throwException(checkForTypeError);
167-
});
168-
it("should not modify line numbers in stack traces", function () {
169-
var throwError = rewire("./testModules/throwError.js");
170-
171-
try {
172-
throwError();
173-
} catch (err) {
174-
if (err.stack) {
175-
expect(err.stack.split("\n")[1]).to.match(/:2:11/);
176-
}
177-
}
22+
});
23+
expect(coffeeModule.readFileSync()).to.be("It works!");
17824
});
17925
});

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