Add context tests

__tests__/context.test.ts

@@ -0,0 +1,16 @@
+import osm = require('os');
+
+import {getInputs} from '../src/context';
+
+test('without password getInputs throws errors', async () => {
+  expect(() => {
+    getInputs();
+  }).toThrowError('Input required and not supplied: password');
+});
+
+test('with password getInputs does not error', async () => {
+  process.env['INPUT_PASSWORD'] = 'groundcontrol';
+  expect(() => {
+    getInputs();
+  }).not.toThrowError();
+});

src/context.ts

@@ -7,7 +7,7 @@ export interface Inputs {
   logout: string;
 }
 
-export async function getInputs(): Promise<Inputs> {
+export function getInputs(): Inputs {
   return {
     registry: core.getInput('registry'),
     username: core.getInput('username'),

src/main.ts

@@ -11,10 +11,10 @@ async function run(): Promise<void> {
       return;
     }
 
-    let inputs: Inputs = await getInputs();
-    stateHelper.setRegistry(inputs.registry);
-    stateHelper.setLogout(inputs.logout);
-    await docker.login(inputs.registry, inputs.username, inputs.password);
+    const {registry, username, password, logout} = getInputs();
+    stateHelper.setRegistry(registry);
+    stateHelper.setLogout(logout);
+    await docker.login(registry, username, password);
   } catch (error) {
     core.setFailed(error.message);
   }