1 files changed, 70 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webrtc-identity/identity-helper.sub.js b/testing/web-platform/tests/webrtc-identity/identity-helper.sub.js
new file mode 100644
index 0000000000..90363662f7
--- /dev/null
+++ b/testing/web-platform/tests/webrtc-identity/identity-helper.sub.js
@@ -0,0 +1,70 @@
+'use strict';
+
+/*
+  In web-platform-test, a number of domains are required to be set up locally.
+  The list is available at docs/_writing-tests/server-features.md. The
+  appropriate hosts file entries can be generated with the WPT CLI via the
+  following command: `wpt make-hosts-file`.
+ */
+
+/*
+    dictionary RTCIdentityProviderDetails {
+      required DOMString domain;
+               DOMString protocol = "default";
+    };
+ */
+
+// Parse a base64 JSON encoded string returned from getIdentityAssertion().
+// This is also the string that is set in the a=identity line.
+// Returns a { idp, assertion } where idp is of type RTCIdentityProviderDetails
+// and assertion is the deserialized JSON that was returned by the
+// IdP proxy's generateAssertion() function.
+function parseAssertionResult(assertionResultStr) {
+  const assertionResult = JSON.parse(atob(assertionResultStr));
+
+  const { idp } = assertionResult;
+  const assertion = JSON.parse(assertionResult.assertion);
+
+  return { idp, assertion };
+}
+
+// Return two distinct IdP domains that are different from current domain
+function getIdpDomains() {
+  const domainA = '{{domains[www]}}';
+  const domainB = '{{domains[www1]}}';
+  const domainC = '{{domains[www2]}}';
+
+  if(window.location.hostname === domainA) {
+    return [domainB, domainC];
+  } else if(window.location.hostname === domainB) {
+    return [domainA, domainC];
+  } else {
+    return [domainA, domainB];
+  }
+}
+
+function assert_rtcerror_rejection(errorDetail, promise, desc) {
+  return promise.then(
+    res => {
+      assert_unreached(`Expect promise to be rejected with RTCError, but instead got ${res}`);
+    }, err => {
+      assert_true(err instanceof RTCError,
+        'Expect error object to be instance of RTCError');
+
+      assert_equals(err.errorDetail, errorDetail,
+        `Expect RTCError object have errorDetail set to ${errorDetail}`);
+
+      return err;
+    });
+}
+
+// construct a host string consist of domain and optionally port
+// If the default HTTP/HTTPS port is used, window.location.port returns
+// empty string.
+function hostString(domain, port) {
+  if(port === '') {
+    return domain;
+  } else {
+    return `${domain}:${port}`;
+  }
+}