1 files changed, 90 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webauthn/getcredential-large-blob-supported.https.html b/testing/web-platform/tests/webauthn/getcredential-large-blob-supported.https.html
new file mode 100644
index 0000000000..c7cc0dfc4a
--- /dev/null
+++ b/testing/web-platform/tests/webauthn/getcredential-large-blob-supported.https.html
@@ -0,0 +1,90 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>navigator.credentials.get() largeBlob extension tests with authenticator support</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src=helpers.js></script>
+<body></body>
+<script>
+standardSetup(async function(authenticator) {
+  "use strict";
+
+  const credential = createCredential({
+    options: {
+      publicKey: {
+        authenticatorSelection: {
+          requireResidentKey: true,
+        },
+        extensions: {
+          largeBlob: {
+            support: "required",
+          },
+        },
+      },
+    },
+  });
+
+  promise_test(async t => {
+    const assertion = await navigator.credentials.get({publicKey: {
+      challenge: new Uint8Array(),
+      allowCredentials: [{
+        id: (await credential).rawId,
+        type: "public-key",
+      }],
+      extensions: {
+        largeBlob: {
+          read: true,
+        },
+      },
+    }});
+    assert_not_own_property(assertion.getClientExtensionResults().largeBlob, "supported");
+    assert_not_own_property(assertion.getClientExtensionResults().largeBlob, "blob");
+    assert_not_own_property(assertion.getClientExtensionResults().largeBlob, "written");
+  }, "navigator.credentials.get() with largeBlob.read set with no blob on authenticator");
+
+  promise_test(async t => {
+    const blob = new TextEncoder().encode("According to all known laws of aviation, "
+                                        + "there is no way a bee should be able to fly");
+    let assertion = await navigator.credentials.get({publicKey: {
+      challenge: new Uint8Array(),
+      allowCredentials: [{
+        id: (await credential).rawId,
+        type: "public-key",
+      }],
+      extensions: {
+        largeBlob: {
+          write: blob,
+        },
+      },
+    }});
+    assert_not_own_property(assertion.getClientExtensionResults().largeBlob, "blob");
+    assert_not_own_property(assertion.getClientExtensionResults().largeBlob, "supported");
+    assert_true(assertion.getClientExtensionResults().largeBlob.written);
+
+    assertion = await navigator.credentials.get({publicKey: {
+      challenge: new Uint8Array(),
+      allowCredentials: [{
+        id: (await credential).rawId,
+        type: "public-key",
+      }],
+      extensions: {
+        largeBlob: {
+          read: true,
+        },
+      },
+    }});
+    assert_array_equals(new Uint8Array(assertion.getClientExtensionResults().largeBlob.blob), blob);
+    assert_not_own_property(assertion.getClientExtensionResults().largeBlob, "supported");
+    assert_not_own_property(assertion.getClientExtensionResults().largeBlob, "written");
+  }, "navigator.credentials.get() read and write blob");
+}, {
+  protocol: "ctap2_1",
+  hasResidentKey: true,
+  hasUserVerification: true,
+  extensions: ["largeBlob"],
+  isUserVerified: true,
+});
+</script>