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1
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jest.autoMockOff(); |
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2
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3
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import ServicesContainer from "../ServicesContainer"; |
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4
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5
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const equals = (actual, expected) => expect(actual).toBe(expected); |
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6
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const instance = new ServicesContainer(); |
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7
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const service = function () { |
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8
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let internalVar = "initial value"; |
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9
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10
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this.setVar = function (value) { |
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11
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internalVar = value; |
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12
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} |
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13
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14
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this.getVar = function () { |
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15
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return internalVar; |
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16
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} |
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17
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}; |
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18
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19
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test("error when service is not registered", () => { |
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20
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expect(() => instance.get("undefinedService")).toThrowError("Service undefinedService not found"); |
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21
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}); |
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22
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23
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test("share same instance with multiple calls", () => { |
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24
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instance.register("a", service); |
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25
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equals(instance.get("a").getVar(), "initial value"); |
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26
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27
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instance.get("a").setVar("x"); |
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28
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equals(instance.get("a").getVar(), "x"); |
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29
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equals(instance.get("a").getVar(), "x"); |
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30
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}); |
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31
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32
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test("it's possible to get a new instance", () => { |
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33
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instance.register("b", service); |
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34
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equals(instance.get("b").getVar(), "initial value"); |
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35
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36
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instance.get("b").setVar("x"); |
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37
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equals(instance.get("b").getVar(), "x"); |
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38
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equals(instance.getNewInstance("b").getVar(), "initial value"); |
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39
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equals(instance.get("b").getVar(), "x"); |
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40
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}); |
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41
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42
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test("impossible to get a new instance when it is a singleton", () => { |
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43
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instance.setInstance("c", new service()); |
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44
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equals(instance.get("c").getVar(), "initial value"); |
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45
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46
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expect(() => instance.getNewInstance("c")).toThrowError("Service c is an singleton, you cannot create a new instance"); |
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47
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}); |
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48
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beeblebrox3 /
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This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.
To learn more about declaring variables in Javascript, see the MDN.