feat(benchpress): add a file reporter

modules/benchpress/test/reporter/json_file_reporter_spec.js

@@ -0,0 +1,96 @@
+import {describe, ddescribe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
+
+import { DateWrapper, Json, RegExpWrapper, isPresent } from 'angular2/src/facade/lang';
+import { PromiseWrapper } from 'angular2/src/facade/async';
+
+import {
+  bind, Injector,
+  SampleDescription,
+  MeasureValues
+} from 'benchpress/common';
+
+
+import { JsonFileReporter } from 'benchpress/src/reporter/json_file_reporter';
+
+export function main() {
+  describe('file reporter', () => {
+    var loggedFile;
+
+    function createReporter({sampleId, descriptions, metrics, path}) {
+      var bindings = [
+        JsonFileReporter.BINDINGS,
+        bind(SampleDescription).toValue(new SampleDescription(sampleId, descriptions, metrics)),
+        bind(JsonFileReporter.PATH).toValue(path),
+        bind(JsonFileReporter.WRITE_FILE).toValue((filename, content) => {
+          loggedFile = {
+            'filename': filename,
+            'content': content
+          };
+          return PromiseWrapper.resolve(null);
+        })
+      ];
+      return new Injector(bindings).get(JsonFileReporter);
+    }
+
+    it('should write all data into a file', (done) => {
+      createReporter({
+        sampleId: 'someId',
+        descriptions: [{ 'a': 2 }],
+        path: 'somePath',
+        metrics: {
+          'script': 'script time'
+        }
+      }).reportSample([
+        mv(0, 0, { 'a': 3, 'b': 6})
+      ], [mv(0, 0, {
+        'a': 3, 'b': 6
+      }), mv(1, 1, {
+        'a': 5, 'b': 9
+      })]);
+      var regExp = RegExpWrapper.create('somePath/someId_\\d+\\.json');
+      expect(isPresent(RegExpWrapper.firstMatch(regExp, loggedFile['filename']))).toBe(true);
+      var parsedContent = Json.parse(loggedFile['content']);
+      expect(parsedContent).toEqual({
+        "description": {
+          "id": "someId",
+          "description": {
+            "a": 2
+          },
+          "metrics": {"script": "script time"}
+        },
+        "completeSample": [{
+            "timeStamp": "1970-01-01T00:00:00.000Z",
+            "runIndex": 0,
+            "values": {
+              "a": 3,
+              "b": 6
+            }
+        }],
+        "validSample": [
+          {
+            "timeStamp": "1970-01-01T00:00:00.000Z",
+            "runIndex": 0,
+            "values": {
+              "a": 3,
+              "b": 6
+            }
+          },
+          {
+            "timeStamp": "1970-01-01T00:00:00.001Z",
+            "runIndex": 1,
+            "values": {
+              "a": 5,
+              "b": 9
+            }
+          }
+        ]
+      });
+      done();
+    });
+
+  });
+}
+
+function mv(runIndex, time, values) {
+  return new MeasureValues(runIndex, DateWrapper.fromMillis(time), values);
+}