Add integration test for sample: aggregate. (#2633)

Towards #1888

samples/js/aggregate/integration_test.go

@@ -0,0 +1,72 @@
+// Copyright 2016 Attic Labs, Inc. All rights reserved.
+// Licensed under the Apache License, version 2.0:
+// http://www.apache.org/licenses/LICENSE-2.0
+
+package counter
+
+import (
+	"testing"
+
+	"github.com/attic-labs/noms/go/marshal"
+	"github.com/attic-labs/noms/go/util/integrationtest"
+)
+
+const inDsName = "test-agg-in"
+const outDsName = "test-agg-out"
+
+func TestIntegration(t *testing.T) {
+	integrationtest.Run(t, &testSuite{})
+}
+
+type testSuite struct {
+	integrationtest.IntegrationSuite
+}
+
+type TestStruct struct {
+	Year string
+}
+
+func (s *testSuite) Setup() {
+	db := s.Database()
+	defer db.Close()
+	ds := db.GetDataset(inDsName)
+
+	testStructs := []TestStruct{
+		{"2012"},
+		{"2012"},
+		{"2013"},
+		{"2012"},
+		{"2013"},
+		{"2014"},
+		{"2012"},
+		{"2013"},
+		{"2014"},
+		{"2015"},
+	}
+
+	inData, err := marshal.Marshal(testStructs)
+	s.NoError(err)
+	_, err = db.CommitValue(ds, inData)
+	s.NoError(err)
+}
+
+func (s *testSuite) Teardown() {
+	db := s.Database()
+	defer db.Close()
+	outData := db.GetDataset(outDsName).HeadValue()
+	expectedMap := map[string]int{
+		"2012": 4,
+		"2013": 3,
+		"2014": 2,
+		"2015": 1,
+	}
+	expected, err := marshal.Marshal(expectedMap)
+	s.NoError(err)
+	s.True(expected.Equals(outData))
+}
+
+func (s *testSuite) NodeArgs() []string {
+	inDsSpec := s.ValueSpecString(inDsName)
+	outDsSpec := s.ValueSpecString(outDsName)
+	return []string{"-s", "TestStruct", "-g", "year", inDsSpec, outDsSpec}
+}