more test DSL

src/__tests__/casperjs/casperUtils.js

@@ -15,6 +15,44 @@ var CasperUtils = {
     return this.getUrl() + '&command=' + commands.join(';');
   },
 
+  testDone: function() {
+    this.test.done();
+  },
+
+  multiAssert: function() {
+    // Copy the args into a variable we can reference inside
+    // our closure.
+    var asserts = [];
+    for (var i = 0; i < arguments.length; i++) {
+      asserts.push(arguments[i]);
+    }
+
+    return function then() {
+      for (var i = 0; i < asserts.length; i++) {
+        var assert = asserts[i];
+        assert.bind(this)();
+      }
+    };
+  },
+
+  asserts: {
+    visibleIDs: function(visibleIDs) {
+      return function then() {
+        visibleIDs.forEach(function(id) {
+          this.test.assertVisible('#' + id);
+        }.bind(this));
+      };
+    },
+
+    visibleSelectors: function(selectors) {
+      return function then() {
+        selectors.forEach(function(selector) {
+          this.test.assertExists(selector);
+        }.bind(this));
+      };
+    },
+  },
+
   waits: {
     jsMount: function() {
       return this.evaluate(function() {

src/__tests__/casperjs/pageload_test.js

@@ -24,25 +24,21 @@ casper.start(
   function() {
     this.test.assertTitle('Learn Git Branching');
 
-    casper.waitFor(CasperUtils.waits.jsMount, function then() {
+    casper.waitFor(
-      visibleIDs.forEach(function(id) {
+      CasperUtils.waits.jsMount
-        this.test.assertVisible('#' + id);
+    )
-      }.bind(this));
 
-      selectors.forEach(function(selector) {
+    .then(CasperUtils.multiAssert(
-        this.test.assertExists(selector);
+      CasperUtils.asserts.visibleIDs(visibleIDs),
-      }.bind(this));
+      CasperUtils.asserts.visibleSelectors(selectors)
+    ))
 
-    })
+    .waitFor(CasperUtils.waits.allCommandsFinished)
-    .waitFor(CasperUtils.waits.allCommandsFinished, function then() {
-      doneSelectors.forEach(function(selector) {
-        this.test.assertExists(selector);
-      }.bind(this));
-    })
-    .then(function() {
-      this.test.done();
-    });
 
-});
+    .then(
+      CasperUtils.asserts.visibleSelectors(doneSelectors)
+    )
 
-casper.run();
+    .then(CasperUtils.testDone);
+
+}).run();