test(device-utils): add unit tests for pickByDeviceModel

packages/device-utils/package.json

@@ -8,7 +8,8 @@
     "scripts": {
         "lint:js": "yarn g:eslint '**/*.{ts,tsx,js}'",
         "depcheck": "yarn g:depcheck",
-        "type-check": "yarn g:tsc --build"
+        "type-check": "yarn g:tsc --build",
+        "test:unit": "yarn g:jest -c ../../jest.config.base.js"
     },
     "dependencies": {
         "@trezor/connect": "workspace:*"

packages/device-utils/tests/__fixtures__/modelUtils.ts

@@ -0,0 +1,30 @@
+import { DeviceModelInternal } from '@trezor/connect';
+
+export const OPTIONS = {
+    default: 'default',
+    [DeviceModelInternal.T1B1]: null,
+    [DeviceModelInternal.T3T1]: 'T3T1',
+};
+
+export const fixtures = [
+    {
+        description: 'should return correct value for a given device',
+        deviceModelInternal: DeviceModelInternal.T3T1,
+        expectedResult: 'T3T1',
+    },
+    {
+        description: 'should return null when the value for the picked device is null',
+        deviceModelInternal: DeviceModelInternal.T1B1,
+        expectedResult: null,
+    },
+    {
+        description: 'should return default when deviceModelInternal is undefined',
+        deviceModelInternal: undefined,
+        expectedResult: 'default',
+    },
+    {
+        description: 'should return default when deviceModelInternal is not among options',
+        deviceModelInternal: DeviceModelInternal.T2B1,
+        expectedResult: 'default',
+    },
+];

packages/device-utils/tests/modelUtils.test.ts

@@ -0,0 +1,10 @@
+import { OPTIONS, fixtures } from './__fixtures__/modelUtils';
+import { pickByDeviceModel } from '../src';
+
+describe('pickByDeviceModel', () => {
+    fixtures.forEach(f => {
+        it(f.description, () => {
+            expect(pickByDeviceModel(f.deviceModelInternal, OPTIONS)).toBe(f.expectedResult);
+        });
+    });
+});