ATO-1063: Adds fetching env var for test context

We're now setting up the basic auth details in the ssm and
pulling them in as environment variables. This adds the values to
the test context and also throws if the values are not defined. This
should hopefully avoid a long feedback loop if these are not set correctly

ui-automation-tests/support/test-setup.ts

@@ -33,9 +33,13 @@ export class TestContext extends World {
     private _otp_code: string = sms_otp_code;
     private _email_code: string = email_otp_code;
     private _servicename: string = servicename;
+    public basicAuthUsername: string;
+    public basicAuthPassword: string;
 
     constructor(options: IWorldOptions) {
         super(options);
+        this.basicAuthUsername = getEnvOrThrow("BASIC_AUTH_USERNAME");
+        this.basicAuthPassword = getEnvOrThrow("BASIC_AUTH_PASSWORD");
     }
 
     async goToPath(path: string) {
@@ -180,3 +184,10 @@ AfterAll(async function () {
 });
 
 setWorldConstructor(TestContext);
+
+const getEnvOrThrow = (key: string): string => {
+    if (!process.env[key]) {
+        throw new Error(`Test environment variable is not defined: "${key}"`);
+    }
+    return process.env[key];
+};