rentgen/tests/test-content-script.js

// Test content script - only for automated testing
// This script proves bidirectional communication between content script and background

// Set initial DOM marker to prove content script is injected

(function() {
    function setMarker() {
        if (document.body) {
            document.body.setAttribute('data-rentgen-injected', 'true');
        } else {
            // Wait for DOM ready
            if (document.readyState === 'loading') {
                document.addEventListener('DOMContentLoaded', () => {
                    document.body.setAttribute('data-rentgen-injected', 'true');
                });
            }
        }
    }
    setMarker();
})();

// Listen for test request from Marionette test script
document.addEventListener('rentgen_test_request', async (event) => {
    try {
        // Mark that we received the event
        document.body.setAttribute('data-rentgen-event-received', 'true');

        // Extract test data from event
        const testData = event.detail || {};
        const inputValue = testData.value || 42;
        const timestamp = testData.timestamp || Date.now();

        // Send message to background script and wait for response
        // This proves background script is running and responsive
        const response = await browser.runtime.sendMessage({
            type: 'RENTGEN_TEST_VERIFICATION',
            inputValue: inputValue,
            timestamp: timestamp,
            url: window.location.href,
            title: document.title
        });

        // Store the response from background in DOM
        // This provides undeniable proof of bidirectional communication
        if (response && response.success) {
            document.body.setAttribute('data-rentgen-verified', 'true');
            document.body.setAttribute('data-rentgen-computed', String(response.computed));
            document.body.setAttribute('data-rentgen-formula', response.formula);
            document.body.setAttribute('data-rentgen-background-timestamp', String(response.backgroundTimestamp));

            // Also dispatch a custom event with the results
            document.dispatchEvent(new CustomEvent('rentgen_test_complete', {
                detail: {
                    success: true,
                    computed: response.computed,
                    formula: response.formula,
                    backgroundTimestamp: response.backgroundTimestamp
                }
            }));
        } else {
            document.body.setAttribute('data-rentgen-verified', 'false');
            document.body.setAttribute('data-rentgen-error', 'No response from background');
        }
    } catch (error) {
        // Store error in DOM for debugging
        document.body.setAttribute('data-rentgen-verified', 'false');
        document.body.setAttribute('data-rentgen-error', String(error));
    }
});