adding in logging

vendor/go.uber.org/zap/http_handler_test.go

@@ -0,0 +1,131 @@
+// 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 zap_test
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	. "go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func newHandler() (AtomicLevel, *Logger) {
+	lvl := NewAtomicLevel()
+	logger := New(zapcore.NewNopCore())
+	return lvl, logger
+}
+
+func assertCodeOK(t testing.TB, code int) {
+	assert.Equal(t, http.StatusOK, code, "Unexpected response status code.")
+}
+
+func assertCodeBadRequest(t testing.TB, code int) {
+	assert.Equal(t, http.StatusBadRequest, code, "Unexpected response status code.")
+}
+
+func assertCodeMethodNotAllowed(t testing.TB, code int) {
+	assert.Equal(t, http.StatusMethodNotAllowed, code, "Unexpected response status code.")
+}
+
+func assertResponse(t testing.TB, expectedLevel zapcore.Level, actualBody string) {
+	assert.Equal(t, fmt.Sprintf(`{"level":"%s"}`, expectedLevel)+"\n", actualBody, "Unexpected response body.")
+}
+
+func assertJSONError(t testing.TB, body string) {
+	// Don't need to test exact error message, but one should be present.
+	var payload map[string]interface{}
+	require.NoError(t, json.Unmarshal([]byte(body), &payload), "Expected error response to be JSON.")
+
+	msg, ok := payload["error"]
+	require.True(t, ok, "Error message is an unexpected type.")
+	assert.NotEqual(t, "", msg, "Expected an error message in response.")
+}
+
+func makeRequest(t testing.TB, method string, handler http.Handler, reader io.Reader) (int, string) {
+	ts := httptest.NewServer(handler)
+	defer ts.Close()
+
+	req, err := http.NewRequest(method, ts.URL, reader)
+	require.NoError(t, err, "Error constructing %s request.", method)
+
+	res, err := http.DefaultClient.Do(req)
+	require.NoError(t, err, "Error making %s request.", method)
+	defer res.Body.Close()
+
+	body, err := ioutil.ReadAll(res.Body)
+	require.NoError(t, err, "Error reading request body.")
+
+	return res.StatusCode, string(body)
+}
+
+func TestHTTPHandlerGetLevel(t *testing.T) {
+	lvl, _ := newHandler()
+	code, body := makeRequest(t, "GET", lvl, nil)
+	assertCodeOK(t, code)
+	assertResponse(t, lvl.Level(), body)
+}
+
+func TestHTTPHandlerPutLevel(t *testing.T) {
+	lvl, _ := newHandler()
+
+	code, body := makeRequest(t, "PUT", lvl, strings.NewReader(`{"level":"warn"}`))
+
+	assertCodeOK(t, code)
+	assertResponse(t, lvl.Level(), body)
+}
+
+func TestHTTPHandlerPutUnrecognizedLevel(t *testing.T) {
+	lvl, _ := newHandler()
+	code, body := makeRequest(t, "PUT", lvl, strings.NewReader(`{"level":"unrecognized-level"}`))
+	assertCodeBadRequest(t, code)
+	assertJSONError(t, body)
+}
+
+func TestHTTPHandlerNotJSON(t *testing.T) {
+	lvl, _ := newHandler()
+	code, body := makeRequest(t, "PUT", lvl, strings.NewReader(`{`))
+	assertCodeBadRequest(t, code)
+	assertJSONError(t, body)
+}
+
+func TestHTTPHandlerNoLevelSpecified(t *testing.T) {
+	lvl, _ := newHandler()
+	code, body := makeRequest(t, "PUT", lvl, strings.NewReader(`{}`))
+	assertCodeBadRequest(t, code)
+	assertJSONError(t, body)
+}
+
+func TestHTTPHandlerMethodNotAllowed(t *testing.T) {
+	lvl, _ := newHandler()
+	code, body := makeRequest(t, "POST", lvl, strings.NewReader(`{`))
+	assertCodeMethodNotAllowed(t, code)
+	assertJSONError(t, body)
+}