1 files changed, 34 insertions, 0 deletions
diff --git a/devtools/client/shadereditor/test/browser_se_editors-lazy-init.js b/devtools/client/shadereditor/test/browser_se_editors-lazy-init.js
new file mode 100644
index 000000000..b2d9d888e
--- /dev/null
+++ b/devtools/client/shadereditor/test/browser_se_editors-lazy-init.js
@@ -0,0 +1,34 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests if source editors are lazily initialized.
+ */
+
+function* ifWebGLSupported() {
+  let { target, panel } = yield initShaderEditor(SIMPLE_CANVAS_URL);
+  let { gFront, ShadersEditorsView } = panel.panelWin;
+
+  reload(target);
+  yield once(gFront, "program-linked");
+
+  let vsEditor = yield ShadersEditorsView._getEditor("vs");
+  let fsEditor = yield ShadersEditorsView._getEditor("fs");
+
+  ok(vsEditor, "A vertex shader editor was initialized.");
+  ok(fsEditor, "A fragment shader editor was initialized.");
+
+  isnot(vsEditor, fsEditor,
+    "The vertex shader editor is distinct from the fragment shader editor.");
+
+  let vsEditor2 = yield ShadersEditorsView._getEditor("vs");
+  let fsEditor2 = yield ShadersEditorsView._getEditor("fs");
+
+  is(vsEditor, vsEditor2,
+    "The vertex shader editor instances are cached.");
+  is(fsEditor, fsEditor2,
+    "The fragment shader editor instances are cached.");
+
+  yield teardown(panel);
+  finish();
+}