1 files changed, 79 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webauthn/createcredential-attachment.https.html b/testing/web-platform/tests/webauthn/createcredential-attachment.https.html
new file mode 100644
index 0000000000..e9458ad560
--- /dev/null
+++ b/testing/web-platform/tests/webauthn/createcredential-attachment.https.html
@@ -0,0 +1,79 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<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>
+    "use strict";
+    // usb transport
+    virtualAuthenticatorPromiseTest(async function() {
+        const credential = await createCredential({
+            options: {
+                publicKey: {
+                    authenticatorSelection: {
+                        userVerification: "preferred"
+                    },
+                },
+            },
+        });
+        assert_equals(credential.authenticatorAttachment, "cross-platform");
+    }, {
+        protocol: "ctap2",
+        transport: "usb"
+    }, "navigator.credentials.create() with usb authenticator, attachment as cross-platform");
+
+    // ble transport
+    virtualAuthenticatorPromiseTest(async function() {
+        const credential = await createCredential({
+            options: {
+                publicKey: {
+                    authenticatorSelection: {
+                        userVerification: "preferred"
+                    },
+                },
+            },
+        });
+        assert_equals(credential.authenticatorAttachment, "cross-platform");
+    }, {
+        protocol: "ctap2",
+        transport: "ble"
+    }, "navigator.credentials.create() with ble authenticator, attachment as cross-platform");
+
+    // nfc transport
+    virtualAuthenticatorPromiseTest(async function() {
+        const credential = await createCredential({
+            options: {
+                publicKey: {
+                    authenticatorSelection: {
+                        userVerification: "preferred"
+                    },
+                },
+            },
+        });
+        assert_equals(credential.authenticatorAttachment, "cross-platform");
+    }, {
+        protocol: "ctap2",
+        transport: "nfc"
+    }, "navigator.credentials.create() with nfc authenticator, attachment as cross-platform");
+
+    // internal transport
+    virtualAuthenticatorPromiseTest(async function() {
+        const credential = await createCredential({
+            options: {
+                publicKey: {
+                    authenticatorSelection: {
+                        userVerification: "preferred"
+                    },
+                },
+            },
+        });
+        assert_equals(credential.authenticatorAttachment, "platform");
+    }, {
+        protocol: "ctap2",
+        transport: "internal"
+    }, "navigator.credentials.create() with internal authenticator, attachment as platform");
+</script>