bug 1546303: webdriver: add WPT tests for properties in evaluated scripts; r=whimboo

This adds a basic set of tests for interacting with various kinds
of DOM properties from the WebDriver commands Execute Script and
Execute Async Script.

Differential Revision: https://phabricator.services.mozilla.com/D28453

--HG--
extra : moz-landing-system : lando

testing/web-platform/tests/webdriver/tests/execute_async_script/properties.py

@@ -0,0 +1,71 @@
+from tests.support.asserts import assert_same_element, assert_success
+from tests.support.inline import inline
+
+
+def execute_async_script(session, script, args=None):
+    if args is None:
+        args = []
+    body = {"script": script, "args": args}
+    return session.transport.send(
+        "POST", "/session/{session_id}/execute/async".format(**vars(session)),
+        body)
+
+
+def test_content_attribute(session):
+    session.url = inline("<input value=foobar>")
+    response = execute_async_script(session, """
+        const [resolve] = arguments;
+        const input = document.querySelector("input");
+        resolve(input.value);
+        """)
+    assert_success(response, "foobar")
+
+
+def test_idl_attribute(session):
+    session.url = inline("""
+        <input>
+        <script>
+        const input = document.querySelector("input");
+        input.value = "foobar";
+        </script>
+        """)
+    response = execute_async_script(session, """
+        const [resolve] = arguments;
+        const input = document.querySelector("input");
+        resolve(input.value);
+        """)
+    assert_success(response, "foobar")
+
+
+def test_idl_attribute_element(session):
+    session.url = inline("""
+        <p>foo
+        <p>bar
+
+        <script>
+        const [foo, bar] = document.querySelectorAll("p");
+        foo.bar = bar;
+        </script>
+        """)
+    _foo, bar = session.find.css("p")
+    response = execute_async_script(session, """
+        const [resolve] = arguments;
+        const foo = document.querySelector("p");
+        resolve(foo.bar);
+        """)
+    value = assert_success(response)
+    assert_same_element(session, bar, value)
+
+
+def test_script_defining_property(session):
+    session.url = inline("<input>")
+    session.execute_script("""
+        const input = document.querySelector("input");
+        input.foobar = "foobar";
+        """)
+    response = execute_async_script(session, """
+        const [resolve] = arguments;
+        const input = document.querySelector("input");
+        resolve(input.foobar);
+        """)
+    assert_success(response, "foobar")

testing/web-platform/tests/webdriver/tests/execute_script/properties.py

@@ -0,0 +1,67 @@
+from tests.support.asserts import assert_same_element, assert_success
+from tests.support.inline import inline
+
+
+def execute_script(session, script, args=None):
+    if args is None:
+        args = []
+    body = {"script": script, "args": args}
+    return session.transport.send(
+        "POST", "/session/{session_id}/execute/sync".format(**vars(session)),
+        body)
+
+
+def test_content_attribute(session):
+    session.url = inline("<input value=foobar>")
+    response = execute_script(session, """
+        const input = document.querySelector("input");
+        return input.value;
+        """)
+    assert_success(response, "foobar")
+
+
+def test_idl_attribute(session):
+    session.url = inline("""
+        <input>
+        <script>
+        const input = document.querySelector("input");
+        input.value = "foobar";
+        </script>
+        """)
+    response = execute_script(session, """
+        const input = document.querySelector("input");
+        return input.value;
+        """)
+    assert_success(response, "foobar")
+
+
+def test_idl_attribute_element(session):
+    session.url = inline("""
+        <p>foo
+        <p>bar
+
+        <script>
+        const [foo, bar] = document.querySelectorAll("p");
+        foo.bar = bar;
+        </script>
+        """)
+    _foo, bar = session.find.css("p")
+    response = execute_script(session, """
+        const foo = document.querySelector("p");
+        return foo.bar;
+        """)
+    value = assert_success(response)
+    assert_same_element(session, bar, value)
+
+
+def test_script_defining_property(session):
+    session.url = inline("<input>")
+    execute_script(session, """
+        const input = document.querySelector("input");
+        input.foobar = "foobar";
+        """)
+    response = execute_script(session, """
+        const input = document.querySelector("input");
+        return input.foobar;
+        """)
+    assert_success(response, "foobar")