A client/server helper wrapper for endpoints in Go.

go/src/infra/libs/jsutil/jsutil_test.go

Index: go/src/infra/libs/jsutil/jsutil_test.go
diff --git a/go/src/infra/libs/jsutil/jsutil_test.go b/go/src/infra/libs/jsutil/jsutil_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..b0e9b614a78f4c7e2c8b7f5c411412e1281c6d16
--- /dev/null
+++ b/go/src/infra/libs/jsutil/jsutil_test.go
@@ -0,0 +1,63 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package jsutil
+
+import (
+	"bytes"
+	"encoding/json"
+	"testing"
+
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+func TestGet(t *testing.T) {
+	t.Parallel()
+
+	const testDoc = `
+	[
+		{
+			"some": [1337, {"mixed": "values"}],
+			"wat": "thing"
+		},
+		{}
+	]
+	`
+
+	var data interface{}
+	dec := json.NewDecoder(bytes.NewBufferString(testDoc))
+	dec.UseNumber()
+	if err := dec.Decode(&data); err != nil {
+		panic(err)
+	}
+
+	Convey("Test Get and GetError", t, func() {
+		Convey("can extract values", func() {
+			So(len(Get(data, 0).(map[string]interface{})), ShouldEqual, 2)
+			val, err := Get(data, 0, "some", 0).(json.Number).Int64()
+			So(err, ShouldBeNil)
+			So(val, ShouldEqual, 1337)
+		})
+
+		Convey("getting a value that's not there panics", func() {
+			So(func() {
+				Get(data, "nope")
+			}, ShouldPanic)
+		})
+
+		Convey("errors are resonable", func() {
+			_, err := GetError(data, 0, "some", 1, "mixed", 10)
+			So(err.Error(), ShouldContainSubstring,
+				"expected []interface{}, but got string")
+
+			_, err = GetError(data, 0, "some", 1, "mixed", "nonex")
+			So(err.Error(), ShouldContainSubstring,
+				"expected map[string]interface{}, but got string")
+
+			_, err = GetError(data, 0.1)
+			So(err.Error(), ShouldContainSubstring,
+				"expected string or int in pathElems, got float64 instead")
+		})
+	})
+}