1 files changed, 63 insertions, 0 deletions
diff --git a/testing/web-platform/tests/presentation-api/receiving-ua/common.js b/testing/web-platform/tests/presentation-api/receiving-ua/common.js
new file mode 100644
index 0000000000..cbee5b4702
--- /dev/null
+++ b/testing/web-platform/tests/presentation-api/receiving-ua/common.js
@@ -0,0 +1,63 @@
+(window => {
+  // Both a controlling side and a receiving one must share the same Stash ID to
+  // transmit data from one to the other. On the other hand, due to polling mechanism
+  // which cleans up a stash, stashes in both controller-to-receiver direction
+  // and one for receiver-to-controller are necessary.
+  window.stashIds = {
+    toController: '0c382524-5738-4df0-837d-4f53ea8addc2',
+    toReceiver: 'a9618cd1-ca2b-4155-b7f6-630dce953c44'
+  }
+
+  // handle a test result received from a receiving page
+  const parseValue = value => {
+    let r;
+
+    // String
+    if (r = value.match(/^(\(string\)\s+)?"(.*)"$/))
+      return r[2];
+    // Object
+    else if (r = value.match(/^(\(object\)\s+)?object\s+"\[object\s+(.*)\]"$/))
+      return window[r[2]].prototype;
+    // Number, boolean, null, undefined
+    else {
+      if (r = value.match(/^(\(\S+\)\s+)?(\S+)$/)) {
+        try {
+          return JSON.parse(r[2]);
+        } catch(e) {
+          return value;
+        }
+      }
+      else
+        return value;
+    }
+  };
+
+  window.parseResult = message => {
+    let r = message.match(/^(assert_.*):\s+(.*)$/);
+    if (r) {
+      const assertion = r[1];
+      const body = r[2];
+      let args;
+      switch (assertion) {
+        case 'assert_equals':
+          if (r = body.match(/^((.*)\s+)?expected\s+((\(\S*\)\s+)?(\S+|(\S+\s+)?\".*\"))\s+but\s+got\s+((\(\S*\)\s+)?(\S+|(\S+\s+)?\".*\"))$/))
+            args = [parseValue(r[7]), parseValue(r[3]), r[2]];
+          break;
+        case 'assert_true':
+          if (r = body.match(/^((.*)\s+)?expected\s+(true|false)\s+got\s+(\S+|(\S+\s+)?\".*\")$/))
+            args = [parseValue(r[4]), r[2]];
+          break;
+        case 'assert_unreached':
+          if (r = body.match(/^((.*)\s+)?Reached\s+unreachable\s+code$/))
+            args = [r[2]];
+          break;
+      }
+      if (args) {
+        window[assertion](args[0], args[1], args[2]);
+        return;
+      }
+    }
+    // default
+    assert_unreached('Test result received from a receiving user agent: ' + message + ': ');
+  };
+})(window);
+\ No newline at end of file