fixed #215 - added a `--fail-fast` option to `casper test`

In order to terminate a test suite execution as soon as any
failure is encountered.

@@ -5,6 +5,7 @@ XXXX-XX-XX, v1.0.0
 ------------------
 
 - fixed [#266](https://github.com/n1k0/casperjs/issues/266) - Fix `tester` module and its self tests
+- fixed [#215](https://github.com/n1k0/casperjs/issues/215) - added a `--fail-fast` option to the `casper test` command, in order to terminate a test suite execution as soon as any failure is encountered
 - added `Tester.assertFalse()` as an alias of `Tester.assertNot()`
 
 2012-10-31, v1.0.0-RC4

@@ -154,6 +154,9 @@ var Casper = function Casper(options) {
     this.initErrorHandler();
 
     this.on('error', function(msg, backtrace) {
+        if (msg === this.test.SKIP_MESSAGE) {
+            return this.warn(f('--fail-fast: aborted remaining tests in "%s"', this.test.currentTestFile));
+        }
         var c = this.getColorizer();
         var match = /^(.*): __mod_error(.*):: (.*)/.exec(msg);
         var notices = [];

@@ -55,6 +55,8 @@ var Tester = function Tester(casper, options) {
 
     this.casper = casper;
 
+    this.SKIP_MESSAGE = '__termination__';
+
     this.currentTestFile = null;
     this.currentSuiteNum = 0;
     this.exporter = require('xunit').create();
@@ -66,6 +68,7 @@ var Tester = function Tester(casper, options) {
     this.running = false;
     this.suites = [];
     this.options = utils.mergeObjects({
+        failFast: false,  // terminates a suite as soon as a test fails?
         failText: "FAIL", // text to use for a successful test
         passText: "PASS", // text to use for a failed test
         pad:      80      // maximum number of chars for a result line
@@ -648,11 +651,13 @@ Tester.prototype.configure = function configure() {
 
     // events
     this.casper.on('error', function(msg, backtrace) {
-        var line = 0;
-        try {
-            line = backtrace[0].line;
-        } catch (e) {}
-        tester.uncaughtError(msg, tester.currentTestFile, line);
+        if (!utils.isString(msg) && msg.indexOf(this.SKIP_MESSAGE) === -1) {
+            var line = 0;
+            try {
+                line = backtrace[0].line;
+            } catch (e) {}
+            tester.uncaughtError(msg, tester.currentTestFile, line);
+        }
         tester.done();
     });
 
@@ -816,21 +821,23 @@ Tester.prototype.pass = function pass(message) {
  */
 Tester.prototype.processAssertionResult = function processAssertionResult(result) {
     "use strict";
-    var eventName, style, status;
-    if (result.success === true) {
-        eventName = 'success';
-        style = 'INFO';
+    var eventName= 'success',
+        message = result.message || result.standard,
+        style = 'INFO',
         status = this.options.passText;
-        this.testResults.passed++;
-    } else {
+    if (!result.success) {
         eventName = 'fail';
         style = 'RED_BAR';
         status = this.options.failText;
         this.testResults.failed++;
+    } else {
+        this.testResults.passed++;
     }
-    var message = result.message || result.standard;
     this.casper.echo([this.colorize(status, style), this.formatMessage(message)].join(' '));
     this.emit(eventName, result);
+    if (this.options.failFast && !result.success) {
+        throw this.SKIP_MESSAGE;
+    }
     return result;
 };
 

@@ -60,6 +60,7 @@ if (casper.cli.get('no-colors') === true) {
     casper.options.colorizerType = cls;
     casper.colorizer = colorizer.create(cls);
 }
+casper.test.options.failFast = casper.cli.get('fail-fast') || false;
 
 // test paths are passed as args
 if (casper.cli.args.length) {
@@ -97,6 +98,9 @@ this.loadIncludes.forEach(function(include){
 casper.test.on('tests.complete', function() {
     "use strict";
     this.renderResults(true, undefined, casper.cli.get('xunit') || undefined);
+    if (this.options.failFast && this.testResults.failures.length > 0) {
+        casper.warn('Test suite failed fast, all tests may not have been executed.');
+    }
 });
 
 // run all the suites

@@ -27,7 +27,7 @@ var codes = [100, 101, 102, 118, 200, 201, 202, 203, 204, 205, 206, 207, 210,
               414, 415, 416, 417, 418, 422, 423, 424, 425, 426, 449, 450,
          500, 501, 502, 503, 504, 505, 507, 509];
 
-casper.thenOpen('http://google.com').each(codes, function(self, code) {
+casper.each(codes, function(self, code) {
     if (code === 100) {
         // HTTP 100 is CONTINUE, so don't expect a terminated response
         return;