Record missing expected screenshots in UI tests in new missing-expected.list build artifact.

2 files changed, 9 insertions, 2 deletions

diff --git a/tests/lib/screenshot-testing/support/app.js b/tests/lib/screenshot-testing/support/app.js
index e0838b7025..95995797c2 100644
--- a/tests/lib/screenshot-testing/support/app.js
+++ b/tests/lib/screenshot-testing/support/app.js
@@ -42,8 +42,8 @@ var isCorePlugin = function (pathToPlugin) {
 var Application = function () {
     this.runner = null;
 
-    var diffviewerDir = path.join(PIWIK_INCLUDE_PATH, 'tests/UI', config.screenshotDiffDir);
-    this.diffViewerGenerator = new DiffViewerGenerator(diffviewerDir);
+    this.diffviewerDir = path.join(PIWIK_INCLUDE_PATH, 'tests/UI', config.screenshotDiffDir);
+    this.diffViewerGenerator = new DiffViewerGenerator(this.diffviewerDir);
 };
 
 Application.prototype.printHelpAndExit = function () {
@@ -259,4 +259,9 @@ Application.prototype.finish = function () {
     phantom.exit(this.runner ? this.runner.failures : -1);
 };
 
+Application.prototype.appendMissingExpected = function (screenName) {
+    var missingExpectedFilePath = path.join(this.diffviewerDir, 'missing-expected.list');
+    fs.write(missingExpectedFilePath, screenName + "\n", "a");
+};
+
 exports.Application = new Application();
\ No newline at end of file
diff --git a/tests/lib/screenshot-testing/support/chai-extras.js b/tests/lib/screenshot-testing/support/chai-extras.js
index f07651053d..a43c8a07e3 100644
--- a/tests/lib/screenshot-testing/support/chai-extras.js
+++ b/tests/lib/screenshot-testing/support/chai-extras.js
@@ -137,6 +137,8 @@ function capture(screenName, compareAgainst, selector, pageSetupFn, comparisonTh
             }
 
             if (!testInfo.expected) {
+                app.appendMissingExpected(screenName);
+
                 fail("No expected screenshot found for " + screenshotFileName + ".");
                 return;
             }