PathOfBuilding/spec/System/TestCommon_spec.lua at 922f693b3e106383b520630901f1b7f356c98851 · PathOfBuildingCommunity/PathOfBuilding · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
describe("Common", function()
	describe("Class creation and use", function()
		it("produces error when parent constructors are not called", function()
			local ParentClass = newClass("ConstructorTestParentClass")
			function ParentClass:init()
				return self
			end
			local ChildClass = newClass("ConstructorTestProblemChildClass", "ConstructorTestParentClass")
			function ChildClass:init()
				-- Intentionally does not call self:ConstructorTestParentClass()
				return self
			end
			common.classes.ConstructorTestParent = ParentClass
			common.classes.ConstructorTestProblemChild = ChildClass

			assert.has_error(function()
				new("ConstructorTestProblemChild"):init()
			end, "Parent class 'ConstructorTestParentClass' of class 'ConstructorTestProblemChild' must be initialised")
			common.classes.ConstructorTestParent = nil
			common.classes.ConstructorTestProblemChild = nil
		end)
		it("produces an error if additional arguments are passed", function()
			local StupidClass = newClass("NewAbuse")
			function StupidClass:init(someParam)
				return self
			end

			common.classes.NewAbuse = StupidClass

			assert.has_no.errors(function()
				local newObj = new("NewAbuse"):init("fish")
			end)
			assert.has_error(function()
				local newObj = new("NewAbuse", "look I'm using the old syntax")
			end)
		end)
		it("produces an error if it calls a parent class without giving it self", function()
			local ParentClass = newClass("ConstructorTestParentClass")
			function ParentClass:init()
				return self
			end

			local ChildClass = newClass("ConstructorTestProblemChildClass", "ConstructorTestParentClass")
			function ChildClass:init()
				self.ConstructorTestParentClass()
				return self
			end

			common.classes.ConstructorTestParent = ParentClass
			common.classes.ConstructorTestProblemChild = ChildClass

			assert.has_error(function()
				new("ConstructorTestProblemChild"):init()
			end)
			common.classes.ConstructorTestParent = nil
			common.classes.ConstructorTestProblemChild = nil
		end)
		it("produces an error if its constructor doesn't return the object", function()
			local StupidClass = newClass("StupidClass")
			function StupidClass:init()
			end

			common.classes.StupidClass = StupidClass

			assert.has_error(function()
				new("StupidClass"):init()
			end, "Class StupidClass constructor did not return a value")
		end)
	end)
end)