add gs

RCCService2018/content/LuaPackages/PurchasePrompt/makeActionCreator.spec.lua

@@ -0,0 +1,47 @@
+return function()
+	local makeActionCreator = require(script.Parent.makeActionCreator)
+
+	describe("the generated action creator", function()
+		it("should throw if given an invalid arguments", function()
+			expect(function()
+				makeActionCreator(100)
+			end).to.throw()
+			expect(function()
+				makeActionCreator("Test", 12)
+			end).to.throw()
+		end)
+
+		it("should generate a callable table with a 'name' field", function()
+			local actionCreator = makeActionCreator("Action")
+
+			expect(type(actionCreator)).to.equal("table")
+			expect(actionCreator.name).to.equal("Action")
+			expect(actionCreator).never.to.throw()
+		end)
+	end)
+
+	describe("the action object generated by the action creator", function()
+		it("should expect a matching number of inputs", function()
+			local actionWithFields = makeActionCreator("AddItem", "id", "title")
+
+			expect(function()
+				actionWithFields(10, "Apple", "extra arg")
+			end).to.throw()
+			expect(function()
+				actionWithFields(10)
+			end).to.throw()
+
+			expect(function()
+				actionWithFields(10, "Orange")
+			end).never.to.throw()
+		end)
+
+		it("should correctly count trailing nils", function()
+			local actionWithFields = makeActionCreator("SetProperty", "value", "default")
+
+			expect(function()
+				actionWithFields("1", nil)
+			end).never.to.throw()
+		end)
+	end)
+end