Issue #727 - add integration test for simple import flow

src/js/controller/piskel/PiskelController.js

@@ -298,6 +298,10 @@
     return pskl.utils.serialization.Serializer.serialize(this.piskel);
   };
 
+  /**
+   * Check if the current sprite is empty. Emptiness here means no pixel has been filled
+   * on any layer or frame for the current sprite.
+   */
   ns.PiskelController.prototype.isEmpty = function () {
     return pskl.app.currentColorsService.getCurrentColors().length === 0;
   };

test/casperjs/integration/IntegrationSuite.js

@@ -7,6 +7,7 @@
   'settings/test-export-png.js',
   'settings/test-export-png-scale.js',
   'settings/test-import-image.js',
+  'settings/test-import-image-empty.js',
   'settings/test-import-image-twice.js',
   'settings/test-resize-complete.js',
   'settings/test-resize-content-complete.js',

test/casperjs/integration/settings/test-import-image-empty.js

@@ -0,0 +1,105 @@
+/* globals casper, setPiskelFromGrid, isDrawerExpanded, getValue, isChecked,
+   evalLine, waitForEvent, replaceFunction, setPiskelFromImageSrc */
+
+casper.test.begin('Image import test with an empty current sprite', 16, function(test) {
+  test.timeout = test.fail.bind(test, ['Test timed out']);
+
+  // Helper to retrieve the text content of the provided selector
+  // in the current wizard step.
+  var getTextContent = function (selector) {
+    return evalLine('document.querySelector(".current-step ' + selector +'").textContent');
+  };
+
+  function onTestStart() {
+    test.assertExists('#drawing-canvas-container canvas', 'Piskel ready, test starting');
+
+    test.assert(!isDrawerExpanded(), 'settings drawer is closed');
+
+    waitForEvent('PISKEL_RESET', onPiskelReset, test.timeout);
+
+    // 1x1 transparent pixel
+    setPiskelFromGrid('['+
+      '[T]' +
+    ']');
+  }
+
+  function onPiskelReset() {
+    // Check the expected piskel was correctly loaded.
+    test.assertEquals(evalLine('pskl.app.currentColorsService.getCurrentColors().length'), 0, 'Has no color');
+    test.assertEquals(evalLine('pskl.app.piskelController.isEmpty()'), true, 'Current piskel is considered as empty');
+    test.assertEquals(evalLine('pskl.app.piskelController.getPiskel().getWidth()'), 1, 'Piskel width is 1 pixel');
+    test.assertEquals(evalLine('pskl.app.piskelController.getPiskel().getHeight()'), 1, 'Piskel height is 1 pixel');
+
+    // Open export panel.
+    test.assertDoesntExist('.settings-section-import', 'Check if import panel is closed');
+    casper.click('[data-setting="import"]');
+
+    casper.waitForSelector('.settings-section-import', onImportPanelReady, test.timeout, 10000);
+  }
+
+  function onImportPanelReady() {
+    test.assert(isDrawerExpanded(), 'settings drawer is expanded');
+    test.assertExists('.settings-section-import', 'Check if import panel is opened');
+
+    replaceFunction(test,
+      'pskl.utils.FileUtils.readImageFile',
+      function (file, callback) {
+        var image = new Image();
+        image.onload = callback.bind(null, image);
+        // Source for a simple base64 encoded PNG, 2x2, with 2 different colors and 2 transparent pixels.
+        image.src = [
+          'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAYAAABytg0',
+          'kAAAAF0lEQVQYVwXBAQEAAACCIPw/uiAYi406Ig4EARK1RMAAAAAASUVORK5CYII='
+        ].join('');
+      }
+    );
+
+    casper.echo('Clicking on Browse Images button');
+    test.assertExists('.file-input-button', 'The import image button is available');
+
+    // We can't really control the file picker from the test so we directly fire the event
+    casper.evaluate(
+      'function () {\
+        $.publish(Events.DIALOG_SHOW, {\
+          dialogId : "import",\
+          initArgs : {\
+            rawFiles: [{type: "image", name: "test-name.png"}]\
+          }\
+        });\
+      }'
+    );
+
+    casper.echo('Wait for .import-image-container');
+    casper.waitForSelector('.current-step.import-image-container', onImageImportReady, test.timeout, 10000);
+  }
+
+  function onImageImportReady() {
+    casper.echo('Found import-image-container');
+
+    // Click on export again to close the settings drawer.
+    test.assertEquals(getTextContent('.import-next-button'), 'import',
+      'Next button found, with text content \'import\'');
+    casper.click('.current-step .import-next-button');
+
+    // Since the current sprite is empty clicking on the button should directly finalize the import.
+    casper.waitForSelector('#dialog-container-wrapper:not(.show)', onPopupClosed, test.timeout, 10000);
+  }
+
+  function onPopupClosed() {
+    casper.echo('Import popup is closed, check the imported piskel content');
+    test.assertEquals(evalLine('pskl.app.piskelController.getPiskel().getWidth()'), 2, 'Piskel width is 2 pixels');
+    test.assertEquals(evalLine('pskl.app.piskelController.getPiskel().getHeight()'), 2, 'Piskel height is 2 pixels');
+    test.assertEquals(evalLine('pskl.app.piskelController.getLayers().length'), 1, 'Piskel has 1 layer');
+    test.assertEquals(evalLine('pskl.app.piskelController.getFrameCount()'), 1, 'Piskel has 1 frame');
+  }
+
+  casper
+    .start(casper.cli.get('baseUrl')+"/?debug&integration-test")
+    .then(function () {
+      casper.echo("URL loaded");
+      casper.waitForSelector('#drawing-canvas-container canvas', onTestStart, test.timeout, 20000);
+    })
+    .run(function () {
+      test.done();
+    });
+});