theme unit tests

squarenotsquare/__tests__/Themes-test.js

@@ -0,0 +1,31 @@
+import Colors from "../src/themes/Colors";
+import Fonts from '../src/themes/Fonts';
+import Icons from '../src/themes/Icons';
+import Metrics, {buildTestMetrics} from "../src/themes/Metrics";
+import {styles} from '../src/screens/styles/AppStyles';
+
+test('Imported colors', () => {
+  expect(Colors).toEqual(expect.anything());
+})
+
+test('Imported fonts', () => {
+  expect(Fonts).toEqual(expect.anything());
+})
+
+test('Imported icons', () => {
+  expect(Icons).toEqual(expect.anything());
+})
+
+test('Imported screen dimensions', () => {
+  expect(Metrics).toEqual(expect.anything());
+})
+
+test('Metrics height < width', () => {
+  let Metrics = buildTestMetrics({width: 100, height: 200});
+  expect(Metrics.screenHeight).toEqual(200);
+})
+
+test('Metrics height > width', () => {
+  let Metrics = buildTestMetrics({width: 200, height: 100});
+  expect(Metrics.screenHeight).toEqual(200);
+})