Add tests for drag component

test/tests/test_drag.lua

@@ -0,0 +1,134 @@
+local mock_gui = require "deftest.mock.gui"
+local mock_time = require("deftest.mock.time")
+local mock_input = require("test.helper.mock_input")
+local test_helper = require("test.helper.test_helper")
+local druid_system = require("druid.druid")
+
+return function()
+	local druid = nil
+	local context = test_helper.get_context()
+
+	local function create_drag_instance(on_drag)
+		local button = mock_gui.add_box("button", 0, 0, 20, 20)
+		local instance = druid:new_drag(button, on_drag)
+		instance.style.IS_USE_SCREEN_KOEF = false
+		instance.style.DRAG_DEADZONE = 4
+		return instance
+	end
+
+	describe("Drag component", function()
+		before(function()
+			mock_gui.mock()
+			mock_time.mock()
+			mock_time.set(60)
+			druid = druid_system.new(context)
+		end)
+
+		after(function()
+			mock_gui.unmock()
+			mock_time.unmock()
+			druid:final(context)
+			druid = nil
+		end)
+
+		it("Should call drag callback on node", function()
+			local on_drag, on_drag_mock = test_helper.get_function()
+			local instance = create_drag_instance(on_drag)
+
+			druid:on_input(mock_input.click_pressed(10, 10))
+			assert(instance.is_touch  == true)
+
+			druid:on_input(mock_input.input_empty(12, 10))
+			assert(on_drag_mock.calls == 0)
+
+			druid:on_input(mock_input.input_empty(14, 10))
+			assert(on_drag_mock.calls == 1)
+			assert(on_drag_mock.params[2] == 2) -- From the last input dx
+			assert(on_drag_mock.params[3] == 0)
+			assert(on_drag_mock.params[4] == 4) -- Total X from drag start point
+			assert(on_drag_mock.params[5] == 0)
+		end)
+
+
+		it("Should call all included events", function()
+			local on_drag, on_drag_mock = test_helper.get_function()
+			local instance = create_drag_instance(on_drag)
+
+			local on_touch_start, on_touch_start_mock = test_helper.get_function()
+			instance.on_touch_start:subscribe(on_touch_start)
+			local on_touch_end, on_touch_end_mock = test_helper.get_function()
+			instance.on_touch_end:subscribe(on_touch_end)
+			local on_drag_start, on_drag_start_mock = test_helper.get_function()
+			instance.on_drag_start:subscribe(on_drag_start)
+			local on_drag_end, on_drag_end_mock = test_helper.get_function()
+			instance.on_drag_end:subscribe(on_drag_end)
+
+			assert(on_touch_start_mock.calls == 0)
+			druid:on_input(mock_input.click_pressed(10, 10))
+			assert(on_touch_start_mock.calls == 1)
+			assert(on_touch_end_mock.calls == 0)
+			druid:on_input(mock_input.click_released(12, 10))
+			assert(on_touch_end_mock.calls == 1)
+
+			druid:on_input(mock_input.click_pressed(10, 10))
+			assert(on_drag_start_mock.calls == 0)
+			druid:on_input(mock_input.input_empty(15, 10))
+			assert(on_drag_start_mock.calls == 1)
+			assert(on_drag_mock.calls == 1)
+			assert(on_drag_end_mock.calls == 0)
+			druid:on_input(mock_input.click_released(15, 10))
+			assert(on_drag_end_mock.calls == 1)
+		end)
+
+		it("Should work with set_enabled", function()
+			local on_drag, on_drag_mock = test_helper.get_function()
+			local instance = create_drag_instance(on_drag)
+
+			instance:set_enabled(false)
+			assert(instance:is_enabled() == false)
+
+			druid:on_input(mock_input.click_pressed(10, 10))
+			assert(instance.is_touch == false)
+
+			druid:on_input(mock_input.input_empty(12, 10))
+			assert(on_drag_mock.calls == 0)
+
+			druid:on_input(mock_input.input_empty(15, 10))
+			assert(on_drag_mock.calls == 0)
+
+			instance:set_enabled(true)
+			assert(instance:is_enabled() == true)
+
+			druid:on_input(mock_input.click_pressed(10, 10))
+			assert(instance.is_touch == true)
+
+			druid:on_input(mock_input.input_empty(12, 10))
+			assert(on_drag_mock.calls == 0)
+
+			druid:on_input(mock_input.input_empty(15, 10))
+			assert(on_drag_mock.calls == 1)
+		end)
+
+		it("Should work with click zone", function()
+			local on_drag, on_drag_mock = test_helper.get_function()
+			local instance = create_drag_instance(on_drag)
+			local zone = mock_gui.add_box("zone", 10, 10, 10, 10)
+			instance:set_click_zone(zone)
+
+			druid:on_input(mock_input.click_pressed(5, 5))
+			assert(instance.is_touch == false)
+
+			druid:on_input(mock_input.input_empty(10, 5))
+			assert(on_drag_mock.calls == 0)
+
+			druid:on_input(mock_input.input_empty(15, 10))
+			assert(on_drag_mock.calls == 0)
+
+			druid:on_input(mock_input.click_pressed(15, 15))
+			assert(instance.is_touch == true)
+
+			druid:on_input(mock_input.input_empty(20, 15))
+			assert(on_drag_mock.calls == 1)
+		end)
+	end)
+end