refactor(test): extract JavaScript test code to test-lib.js

- Created tests/test-lib.js with testBackgroundComputation() function
- Updated test_verify.py to load and execute test library via Marionette
- Modified Dockerfile to copy both test-lib.js and test_verify.py to /app/tests/
- Improved code organization and reusability

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Dockerfile

@@ -82,9 +82,10 @@ CMD ["echo", "Use verify stage for testing"]
 # Integration test stage - automated testing with exit code
 FROM runtime AS integration_test
 
-# Copy verification script
+# Copy verification scripts
-COPY tests/test_verify.py /app/test_verify.py
+COPY tests/test_verify.py /app/tests/test_verify.py
-RUN chmod +x /app/test_verify.py
+COPY tests/test-lib.js /app/tests/test-lib.js
+RUN chmod +x /app/tests/test_verify.py
 
 # Run verification and exit with proper exit code
-CMD ["python3", "/app/test_verify.py"]
+CMD ["python3", "/app/tests/test_verify.py"]

tests/test-lib.js

@@ -0,0 +1,36 @@
+// Test library for Marionette-based extension verification
+// This JavaScript code runs in the browser context via Marionette
+
+/**
+ * Test that background script performs computation correctly
+ * @param {number} testValue - Input value for computation
+ * @returns {Promise<number|null>} - Computed result or null on failure
+ */
+function testBackgroundComputation(testValue) {
+    // Check if content script loaded
+    if (!document.body.getAttribute('data-rentgen-injected')) {
+        return -1;  // Content script not loaded
+    }
+
+    // Dispatch test request to content script
+    document.dispatchEvent(new CustomEvent('rentgen_test_request', {
+        detail: { value: testValue, timestamp: Date.now() }
+    }));
+
+    // Wait for background response
+    return new Promise((resolve) => {
+        let attempts = 0;
+        const checkInterval = setInterval(() => {
+            attempts++;
+            const computed = document.body.getAttribute('data-rentgen-computed');
+
+            if (computed) {
+                clearInterval(checkInterval);
+                resolve(parseInt(computed));
+            } else if (attempts > 50) {
+                clearInterval(checkInterval);
+                resolve(null);
+            }
+        }, 100);
+    });
+}

tests/test_verify.py

@@ -70,36 +70,17 @@ def test_addition():
         test_value = 17
         expected = 37
 
-        result = client.execute_script("""
+        # Load test library
-            const testValue = arguments[0];
+        test_lib_path = os.path.join(os.path.dirname(__file__), 'test-lib.js')
+        with open(test_lib_path, 'r') as f:
+            test_lib = f.read()
 
-            // Check if content script loaded
+        # Execute test
-            if (!document.body.getAttribute('data-rentgen-injected')) {
+        result = client.execute_script(
-                return -1;  // Content script not loaded
+            test_lib + "\nreturn testBackgroundComputation(arguments[0]);",
-            }
+            script_args=[test_value],
-
+            script_timeout=10000
-            // Dispatch test request to content script
+        )
-            document.dispatchEvent(new CustomEvent('rentgen_test_request', {
-                detail: { value: testValue, timestamp: Date.now() }
-            }));
-
-            // Wait for background response
-            return new Promise((resolve) => {
-                let attempts = 0;
-                const checkInterval = setInterval(() => {
-                    attempts++;
-                    const computed = document.body.getAttribute('data-rentgen-computed');
-
-                    if (computed) {
-                        clearInterval(checkInterval);
-                        resolve(parseInt(computed));
-                    } else if (attempts > 50) {
-                        clearInterval(checkInterval);
-                        resolve(null);
-                    }
-                }, 100);
-            });
-        """, script_args=[test_value], script_timeout=10000)
 
         client.close()