Added testing for context

service/context.go

@@ -22,18 +22,24 @@ package service
 
 import gcontext "context"
 
-// Context embeds Host and go context for use
+// Context embedds Host and go context for use
 type Context interface {
 	gcontext.Context
 	Host
+
+	Resource(key string) interface{}
+	SetResource(key string, value interface{})
 }
+
 type context struct {
 	gcontext.Context
 	Host
 
 	resources map[string]interface{}
 }
 
+var _ Context = &context{}
+
 // NewContext always returns service.Context for use in the service
 func NewContext(ctx gcontext.Context, host Host) Context {
 	return &context{
@@ -45,13 +51,13 @@ func NewContext(ctx gcontext.Context, host Host) Context {
 
 // Resources returns resources associated with the current context
 func (c *context) Resource(key string) interface{} {
-	if res, ok := c.tryResource(key); ok {
+	if res, ok := c.TryResource(key); ok {
 		return res
 	}
 	return nil
 }
 
-func (c *context) tryResource(key string) (interface{}, bool) {
+func (c *context) TryResource(key string) (interface{}, bool) {
 	res, ok := c.resources[key]
 	return res, ok
 }

service/context_test.go

@@ -0,0 +1,56 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package service
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	gcontext "context"
+)
+
+type _testStruct struct {
+	data string
+}
+
+func TestContext_Simple(t *testing.T) {
+	ctx := NewContext(gcontext.Background(), NullHost())
+	testStruct := _testStruct{
+		data: "hello",
+	}
+	ctx.SetResource("resource", testStruct)
+
+	assert.NotNil(t, ctx.Resource("resource"))
+	assert.Equal(t, "hello", ctx.Resource("resource").(_testStruct).data)
+}
+
+func TestContext_NilResource(t *testing.T) {
+	ctx := NewContext(gcontext.Background(), NullHost())
+
+	assert.Nil(t, ctx.Resource("resource"))
+}
+
+func TestContext_HostAccess(t *testing.T) {
+	ctx := NewContext(gcontext.Background(), NullHost())
+	assert.NotNil(t, ctx.Config())
+	assert.Equal(t, "dummy", ctx.Name())
+}