Adding maven auth support

__tests__/auth.test.ts

@@ -0,0 +1,36 @@
+import io = require('@actions/io');
+import fs = require('fs');
+import path = require('path');
+import child_process = require('child_process');
+
+const m2Dir = path.join(__dirname, '.m2');
+const settingsFile = path.join(m2Dir, 'settings.xml');
+
+import * as auth from '../src/auth';
+
+describe('auth tests', () => {
+  beforeAll(async () => {
+    await io.rmRF(m2Dir);
+  }, 300000);
+
+  afterAll(async () => {
+    try {
+      await io.rmRF(m2Dir);
+    } catch {
+      console.log('Failed to remove test directories');
+    }
+  }, 100000);
+
+  it('Creates settings.xml file with username and password', async () => {
+    const username = 'bluebottle';
+    const password = 'SingleOrigin';
+
+    await auth.configAuthentication(username, password);
+
+    expect(fs.existsSync(m2Dir)).toBe(true);
+    expect(fs.existsSync(settingsFile)).toBe(true);
+    expect(fs.readFileSync(settingsFile, 'utf-8')).toEqual(
+      auth.generate(username, password)
+    );
+  }, 100000);
+});