1 files changed, 111 insertions, 0 deletions
diff --git a/remote/cdp/test/xpcshell/test_DomainCache.js b/remote/cdp/test/xpcshell/test_DomainCache.js
new file mode 100644
index 0000000000..9ea53ccdd9
--- /dev/null
+++ b/remote/cdp/test/xpcshell/test_DomainCache.js
@@ -0,0 +1,111 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const { Domain } = ChromeUtils.importESModule(
+  "chrome://remote/content/cdp/domains/Domain.sys.mjs"
+);
+const { DomainCache } = ChromeUtils.importESModule(
+  "chrome://remote/content/cdp/domains/DomainCache.sys.mjs"
+);
+
+class MockSession {
+  onEvent() {}
+}
+
+const noopSession = new MockSession();
+
+add_task(function test_DomainCache_constructor() {
+  new DomainCache(noopSession, {});
+});
+
+add_task(function test_DomainCache_domainSupportsMethod() {
+  const modules = {
+    Foo: class extends Domain {
+      bar() {}
+    },
+  };
+  const domains = new DomainCache(noopSession, modules);
+
+  ok(domains.domainSupportsMethod("Foo", "bar"));
+  ok(!domains.domainSupportsMethod("Foo", "baz"));
+  ok(!domains.domainSupportsMethod("foo", "bar"));
+});
+
+add_task(function test_DomainCache_get_invalidModule() {
+  Assert.throws(() => {
+    const domains = new DomainCache(noopSession, { Foo: undefined });
+    domains.get("Foo");
+  }, /UnknownMethodError/);
+});
+
+add_task(function test_DomainCache_get_missingConstructor() {
+  Assert.throws(() => {
+    const domains = new DomainCache(noopSession, { Foo: {} });
+    domains.get("Foo");
+  }, /TypeError/);
+});
+
+add_task(function test_DomainCache_get_superClassNotDomain() {
+  Assert.throws(() => {
+    const domains = new DomainCache(noopSession, { Foo: class {} });
+    domains.get("Foo");
+  }, /TypeError/);
+});
+
+add_task(function test_DomainCache_get_constructs() {
+  let eventFired;
+  class Session {
+    onEvent(event) {
+      eventFired = event;
+    }
+  }
+
+  let constructed = false;
+  class Foo extends Domain {
+    constructor() {
+      super();
+      constructed = true;
+    }
+  }
+
+  const session = new Session();
+  const domains = new DomainCache(session, { Foo });
+
+  const foo = domains.get("Foo");
+  ok(constructed);
+  ok(foo instanceof Foo);
+
+  const event = {};
+  foo.emit(event);
+  equal(event, eventFired);
+});
+
+add_task(function test_DomainCache_size() {
+  class Foo extends Domain {}
+  const domains = new DomainCache(noopSession, { Foo });
+
+  equal(domains.size, 0);
+  domains.get("Foo");
+  equal(domains.size, 1);
+});
+
+add_task(function test_DomainCache_clear() {
+  let dtorCalled = false;
+  class Foo extends Domain {
+    destructor() {
+      dtorCalled = true;
+    }
+  }
+
+  const domains = new DomainCache(noopSession, { Foo });
+
+  equal(domains.size, 0);
+  domains.get("Foo");
+  equal(domains.size, 1);
+
+  domains.clear();
+  equal(domains.size, 0);
+  ok(dtorCalled);
+});