1 files changed, 42 insertions, 0 deletions
diff --git a/toolkit/mozapps/extensions/test/xpcshell/test_webextension_install_syntax_error.js b/toolkit/mozapps/extensions/test/xpcshell/test_webextension_install_syntax_error.js
new file mode 100644
index 0000000000..0edc6ec5a4
--- /dev/null
+++ b/toolkit/mozapps/extensions/test/xpcshell/test_webextension_install_syntax_error.js
@@ -0,0 +1,42 @@
+const ADDON_ID = "webext-test@tests.mozilla.org";
+
+add_task(async function setup() {
+  createAppInfo("xpcshell@tests.mozilla.org", "XPCShell", "1", "1");
+  await promiseStartupManager();
+});
+
+add_task(async function install_xpi() {
+  // WebExtension with a JSON syntax error in manifest.json
+  let xpi1 = AddonTestUtils.createTempWebExtensionFile({
+    files: {
+      "manifest.json": String.raw`{
+        "manifest_version: 2,
+        "browser_specific_settings": {"gecko": {"id": "${ADDON_ID}"}},
+        "name": "Temp WebExt with Error",
+        "version": "0.1"
+      }`,
+    },
+  });
+
+  // Valid WebExtension
+  let xpi2 = AddonTestUtils.createTempWebExtensionFile({
+    files: {
+      "manifest.json": String.raw`{
+        "manifest_version": 2,
+        "browser_specific_settings": {"gecko": {"id": "${ADDON_ID}"}},
+        "name": "Temp WebExt without Error",
+        "version": "0.1"
+      }`,
+    },
+  });
+
+  let install1 = await AddonManager.getInstallForFile(xpi1);
+  Assert.equal(install1.state, AddonManager.STATE_DOWNLOAD_FAILED);
+  Assert.equal(install1.error, AddonManager.ERROR_CORRUPT_FILE);
+
+  // Replace xpi1 with xpi2 to have the same filename to reproduce install error
+  xpi2.moveTo(xpi1.parent, xpi1.leafName);
+
+  let install2 = await AddonManager.getInstallForFile(xpi2);
+  Assert.equal(install2.error, 0);
+});