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1
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var inherits = require('../src/inherits.js'); |
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2
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3
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describe('inherits', function() { |
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4
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describe('failing tests', function() { |
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5
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it("should fail because the Constructor is undefined", function() { |
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6
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expect(inherits.bind()).toThrowError(TypeError); |
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7
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}); |
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8
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9
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it("should fail because the Constructor is null", function() { |
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10
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expect(inherits.bind(null, null)).toThrowError(TypeError); |
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11
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}); |
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12
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13
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it("should fail because the SuperConstructor is undefined", function() { |
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14
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expect(inherits.bind(null, function() {})).toThrowError(TypeError); |
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15
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}); |
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16
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17
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it("should fail because the SuperConstructor is null", function() { |
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18
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expect(inherits.bind(null, function() {}, null)).toThrowError(TypeError); |
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19
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}); |
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20
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21
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it("should fail because the SuperConstructor has no prototype", function() { |
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22
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expect(inherits.bind(null, function() {}, [])).toThrowError(TypeError); |
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23
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}); |
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24
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}); |
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25
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26
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describe('successful tests', function() { |
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27
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// test example from README.md |
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28
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var SuperClass = function() { |
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29
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this.someProperty = 42; |
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30
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}; |
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31
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32
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SuperClass.prototype.retMsg = function(msg) { |
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33
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return msg; |
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34
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}; |
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35
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36
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SuperClass.prototype.getSomeProp = function() { |
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37
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return this.someProperty; |
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38
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}; |
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39
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40
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// a class we want to inherit from SuperClass |
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41
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var SomeClass = function() { |
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42
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SuperClass.call(this); |
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43
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}; |
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44
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45
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inherits(SomeClass, SuperClass); |
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46
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47
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SomeClass.prototype.flop = function(msg) { |
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48
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return this.retMsg(msg); |
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49
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}; |
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50
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51
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var someClass_instance = new SomeClass(); |
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52
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// end test example from README.md |
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53
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54
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it("should be able to access inherited properties", function() { |
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55
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expect(someClass_instance.someProperty).toEqual(42); |
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56
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}); |
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57
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58
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it("should be able to run inherited methods", function() { |
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59
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expect(someClass_instance.retMsg('hi')).toEqual('hi'); |
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60
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}); |
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61
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62
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it("should be able to run inherited methods by using the this keyword", function() { |
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63
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expect(someClass_instance.flop('hi')).toEqual('hi'); |
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64
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}); |
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65
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66
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it("should be instance of SomeClass", function() { |
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67
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expect((someClass_instance instanceof SomeClass)).toEqual(true); |
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68
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}); |
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69
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70
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it("should be instance of SuperClass", function() { |
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71
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expect((someClass_instance instanceof SuperClass)).toEqual(true); |
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72
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}); |
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73
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74
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it("should set SuperClass contructor", function() { |
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75
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expect(someClass_instance.constructor.super_ === SuperClass).toEqual(true); |
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76
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}); |
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77
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78
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it("should set contructor", function() { |
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79
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expect(someClass_instance.constructor === SomeClass).toEqual(true); |
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80
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}); |
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81
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}); |
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82
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}); |
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83
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theZieger /
inherits.js
