Tools: Moved lib-specific tests under lib package

packages/lib/eventManager.test.js

@@ -0,0 +1,116 @@
+'use strict';
+
+
+const { checkThrow } = require('./testing/test-utils.js');
+const eventManager = require('./eventManager').default;
+
+describe('eventManager', function() {
+
+	beforeEach(async (done) => {
+		eventManager.reset();
+		done();
+	});
+
+	afterEach(async (done) => {
+		eventManager.reset();
+		done();
+	});
+
+	it('should watch state props', (async () => {
+		let localStateName = '';
+		let callCount = 0;
+
+		function nameWatch(event) {
+			callCount++;
+			localStateName = event.value;
+		}
+
+		const globalState = {
+			name: 'john',
+		};
+
+		eventManager.appStateOn('name', nameWatch);
+		eventManager.appStateEmit(globalState);
+
+		expect(localStateName).toBe('john');
+
+		globalState.name = 'paul';
+
+		eventManager.appStateEmit(globalState);
+
+		expect(localStateName).toBe('paul');
+
+		expect(callCount).toBe(2);
+
+		eventManager.appStateEmit(globalState);
+
+		expect(callCount).toBe(2);
+	}));
+
+	it('should unwatch state props', (async () => {
+		let localStateName = '';
+
+		function nameWatch(event) {
+			localStateName = event.value;
+		}
+
+		const globalState = {
+			name: 'john',
+		};
+
+		eventManager.appStateOn('name', nameWatch);
+		eventManager.appStateOff('name', nameWatch);
+		eventManager.appStateEmit(globalState);
+
+		expect(localStateName).toBe('');
+	}));
+
+	it('should watch nested props', (async () => {
+		let localStateName = '';
+
+		function nameWatch(event) {
+			localStateName = event.value;
+		}
+
+		const globalState = {
+			user: {
+				name: 'john',
+			},
+		};
+
+		eventManager.appStateOn('user.name', nameWatch);
+		eventManager.appStateEmit(globalState);
+
+		expect(localStateName).toBe('john');
+
+		globalState.user.name = 'paul';
+
+		eventManager.appStateEmit(globalState);
+
+		expect(localStateName).toBe('paul');
+	}));
+
+	it('should not be possible to modify state props', (async () => {
+		let localUser = {};
+
+		function userWatch(event) {
+			// Normally, the user should not keep a reference to the whole object
+			// but make a copy. However, if they do keep a reference and try to
+			// modify it, it should throw an exception as that would be an attempt
+			// to directly modify the Redux state.
+			localUser = event.value;
+		}
+
+		const globalState = {
+			user: {
+				name: 'john',
+			},
+		};
+
+		eventManager.appStateOn('user', userWatch);
+		eventManager.appStateEmit(globalState);
+
+		expect(checkThrow(() => localUser.name = 'paul')).toBe(true);
+	}));
+
+});