Merge branch 'develop'

AUTHORS.md

@@ -5,7 +5,7 @@ List of all the awesome people working to make Gin the best Web Framework in Go!
 ##gin 0.x series authors
 
 **Lead Developer:**  Manu Martinez-Almeida (@manucorporat)  
-**Stuff:**
+**Staff:**
 Javier Provecho (@javierprovecho)
 
 People and companies, who have contributed, in alphabetical order.
@@ -22,10 +22,13 @@ People and companies, who have contributed, in alphabetical order.
 - Using template.Must to fix multiple return issue
 - ★ Added support for OPTIONS verb
 - ★ Setting response headers before calling WriteHeader
+- Improved documentation for model binding
+- ★ Added Content.Redirect()
+- ★ Added tons of Unit tests
 
 
 **@austinheap (Austin Heap)**
-- Adds travis CI integration
+- Added travis CI integration
 
 
 **@bluele (Jun Kimura)**
@@ -67,20 +70,23 @@ People and companies, who have contributed, in alphabetical order.
 **@mdigger (Dmitry Sedykh)**
 - Fixes Form binding when content-type is x-www-form-urlencoded
 - No repeat call c.Writer.Status() in gin.Logger
-- Fixed Content-Type for json render
+- Fixes Content-Type for json render
 
 
 **@mopemope (Yutaka Matsubara)**
 - ★ Adds Godep support (Dependencies Manager)
 - Fix variadic parameter in the flexible render API
 - Fix Corrupted plain render
-- Fix variadic parameter in new flexible render API
  
 
 **@msemenistyi (Mykyta Semenistyi)**
 - update Readme.md. Add code to String method
 
 
+**@msoedov (Sasha Myasoedov)**
+- ★ Adds tons of unit tests.
+
+
 **@ngerakines (Nick Gerakines)**
 - ★ Improves API, c.GET() doesn't panic
 - Adds MustGet() method
@@ -96,3 +102,7 @@ People and companies, who have contributed, in alphabetical order.
 
 **@SkuliOskarsson (Skuli Oskarsson)**
 - Fixes some texts in README II
+
+
+**@yuyabee**
+- Fixed README

CHANGELOG.md

@@ -1,6 +1,12 @@
-##Changelog
+#Changelog
 
-###Gin 0.4 (??)
+###Gin 0.4 (Aug 21, 2014)
+
+- [NEW] Development mode
+- [NEW] Unit tests
+- [NEW] Add Content.Redirect()
+- [FIX] Deferring WriteHeader()
+- [FIX] Improved documentation for model binding
 
 
 ###Gin 0.3 (Jul 18, 2014)

README.md

@@ -1,6 +1,6 @@
 #Gin Web Framework
 
-[![GoDoc](https://godoc.org/github.com/gin-gonic/gin?status.png)](https://godoc.org/github.com/gin-gonic/gin)
+[![GoDoc](https://godoc.org/github.com/gin-gonic/gin?status.svg)](https://godoc.org/github.com/gin-gonic/gin)
 [![Build Status](https://travis-ci.org/gin-gonic/gin.svg)](https://travis-ci.org/gin-gonic/gin)
 
 Gin is a web framework written in Golang. It features a martini-like API with much better performance, up to 40 times faster. If you need performance and good productivity, you will love Gin.  
@@ -196,39 +196,62 @@ func main() {
 }
 ```
 
+#### Model binding and validation
 
-#### JSON parsing and validation
+To bind a request body into a type, use model binding. We currently support binding of JSON, XML and standard form values (foo=bar&boo=baz).
+
+Note that you need to set the corresponding binding tag on all fields you want to bind. For example, when binding from JSON, set `json:"fieldname"`.
+
+When using the Bind-method, Gin tries to infer the binder depending on the Content-Type header. If you are sure what you are binding, you can use BindWith. 
+
+You can also specify that specific fields are required. If a field is decorated with `binding:"required"` and has a empty value when binding, the current request will fail with an error.
 
 ```go
+// Binding from JSON
 type LoginJSON struct {
 	User     string `json:"user" binding:"required"`
 	Password string `json:"password" binding:"required"`
 }
 
+// Binding from form values
+type LoginForm struct {
+    User     string `form:"user" binding:"required"`
+    Password string `form:"password" binding:"required"`   
+}
+
 func main() {
 	r := gin.Default()
 
+    // Example for binding JSON ({"user": "manu", "password": "123"})
 	r.POST("/login", func(c *gin.Context) {
 		var json LoginJSON
 
-		// If EnsureBody returns false, it will write automatically the error
-		// in the HTTP stream and return a 400 error. If you want custom error
-		// handling you should use: c.ParseBody(interface{}) error
-		if c.EnsureBody(&json) {
-			if json.User == "manu" && json.Password == "123" {
-				c.JSON(200, gin.H{"status": "you are logged in"})
-			} else {
-				c.JSON(401, gin.H{"status": "unauthorized"})
-			}
-		}
+        c.Bind(&json) // This will infer what binder to use depending on the content-type header.
+        if json.User == "manu" && json.Password == "123" {
+            c.JSON(200, gin.H{"status": "you are logged in"})
+        } else {
+            c.JSON(401, gin.H{"status": "unauthorized"})
+        }
 	})
 
+    // Example for binding a HTLM form (user=manu&password=123)
+    r.POST("/login", func(c *gin.Context) {
+        var form LoginForm
+
+        c.BindWith(&form, binding.Form) // You can also specify which binder to use. We support binding.Form, binding.JSON and binding.XML.
+        if form.User == "manu" && form.Password == "123" {
+            c.JSON(200, gin.H{"status": "you are logged in"})
+        } else {
+            c.JSON(401, gin.H{"status": "unauthorized"})
+        }
+    })
+
 	// Listen and server on 0.0.0.0:8080
 	r.Run(":8080")
 }
 ```
 
-#### XML, and JSON rendering
+#### XML and JSON rendering
 
 ```go
 func main() {
@@ -297,6 +320,16 @@ func main() {
 }
 ```
 
+#### Redirects
+
+Issuing a HTTP redirect is easy:
+
+```r.GET("/test", func(c *gin.Context) {
+	c.Redirect(301, "http://www.google.com/")
+})
+
+Both internal and external locations are supported.
+```
 
 #### Custom Middlewares
 
@@ -392,7 +425,7 @@ func main() {
 			time.Sleep(5 * time.Second)
 
 			// note than you are using the copied context "c_cp", IMPORTANT
-			log.Println("Done! in path " + c_cp.Req.URL.Path)
+			log.Println("Done! in path " + c_cp.Request.URL.Path)
 		}()
 	})
 
@@ -402,7 +435,7 @@ func main() {
 		time.Sleep(5 * time.Second)
 
 		// since we are NOT using a goroutine, we do not have to copy the context
-		log.Println("Done! in path " + c.Req.URL.Path)
+		log.Println("Done! in path " + c.Request.URL.Path)
 	})
 
     // Listen and server on 0.0.0.0:8080

auth_test.go

@@ -0,0 +1,57 @@
+package gin
+
+import (
+	"encoding/base64"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestBasicAuthSucceed(t *testing.T) {
+	req, _ := http.NewRequest("GET", "/login", nil)
+	w := httptest.NewRecorder()
+
+	r := New()
+	accounts := Accounts{"admin": "password"}
+	r.Use(BasicAuth(accounts))
+
+	r.GET("/login", func(c *Context) {
+		c.String(200, "autorized")
+	})
+
+	req.Header.Set("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte("admin:password")))
+	r.ServeHTTP(w, req)
+
+	if w.Code != 200 {
+		t.Errorf("Response code should be Ok, was: %s", w.Code)
+	}
+	bodyAsString := w.Body.String()
+
+	if bodyAsString != "autorized" {
+		t.Errorf("Response body should be `autorized`, was  %s", bodyAsString)
+	}
+}
+
+func TestBasicAuth401(t *testing.T) {
+	req, _ := http.NewRequest("GET", "/login", nil)
+	w := httptest.NewRecorder()
+
+	r := New()
+	accounts := Accounts{"foo": "bar"}
+	r.Use(BasicAuth(accounts))
+
+	r.GET("/login", func(c *Context) {
+		c.String(200, "autorized")
+	})
+
+	req.Header.Set("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte("admin:password")))
+	r.ServeHTTP(w, req)
+
+	if w.Code != 401 {
+		t.Errorf("Response code should be Not autorized, was: %s", w.Code)
+	}
+
+	if w.HeaderMap.Get("WWW-Authenticate") != "Basic realm=\"Authorization Required\"" {
+		t.Errorf("WWW-Authenticate header is incorrect: %s", w.HeaderMap.Get("Content-Type"))
+	}
+}

context.go

@@ -247,6 +247,15 @@ func (c *Context) String(code int, format string, values ...interface{}) {
 	c.Render(code, render.Plain, format, values)
 }
 
+// Returns a HTTP redirect to the specific location.
+func (c *Context) Redirect(code int, location string) {
+	if code >= 300 && code <= 308 {
+		c.Render(code, render.Redirect, location)
+	} else {
+		panic(fmt.Sprintf("Cannot send a redirect with status code %d", code))
+	}
+}
+
 // Writes some data into the body stream and updates the HTTP code.
 func (c *Context) Data(code int, contentType string, data []byte) {
 	if len(contentType) > 0 {

context_test.go

@@ -0,0 +1,438 @@
+package gin
+
+import (
+	"bytes"
+	"errors"
+	"html/template"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+// TestContextParamsGet tests that a parameter can be parsed from the URL.
+func TestContextParamsByName(t *testing.T) {
+	req, _ := http.NewRequest("GET", "/test/alexandernyquist", nil)
+	w := httptest.NewRecorder()
+	name := ""
+
+	r := New()
+	r.GET("/test/:name", func(c *Context) {
+		name = c.Params.ByName("name")
+	})
+
+	r.ServeHTTP(w, req)
+
+	if name != "alexandernyquist" {
+		t.Errorf("Url parameter was not correctly parsed. Should be alexandernyquist, was %s.", name)
+	}
+}
+
+// TestContextSetGet tests that a parameter is set correctly on the
+// current context and can be retrieved using Get.
+func TestContextSetGet(t *testing.T) {
+	req, _ := http.NewRequest("GET", "/test", nil)
+	w := httptest.NewRecorder()
+
+	r := New()
+	r.GET("/test", func(c *Context) {
+		// Key should be lazily created
+		if c.Keys != nil {
+			t.Error("Keys should be nil")
+		}
+
+		// Set
+		c.Set("foo", "bar")
+
+		v, err := c.Get("foo")
+		if err != nil {
+			t.Errorf("Error on exist key")
+		}
+		if v != "bar" {
+			t.Errorf("Value should be bar, was %s", v)
+		}
+	})
+
+	r.ServeHTTP(w, req)
+}
+
+// TestContextJSON tests that the response is serialized as JSON
+// and Content-Type is set to application/json
+func TestContextJSON(t *testing.T) {
+	req, _ := http.NewRequest("GET", "/test", nil)
+	w := httptest.NewRecorder()
+
+	r := New()
+	r.GET("/test", func(c *Context) {
+		c.JSON(200, H{"foo": "bar"})
+	})
+
+	r.ServeHTTP(w, req)
+
+	if w.Body.String() != "{\"foo\":\"bar\"}\n" {
+		t.Errorf("Response should be {\"foo\":\"bar\"}, was: %s", w.Body.String())
+	}
+
+	if w.HeaderMap.Get("Content-Type") != "application/json" {
+		t.Errorf("Content-Type should be application/json, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}
+
+// TestContextHTML tests that the response executes the templates
+// and responds with Content-Type set to text/html
+func TestContextHTML(t *testing.T) {
+	req, _ := http.NewRequest("GET", "/test", nil)
+	w := httptest.NewRecorder()
+
+	r := New()
+	templ, _ := template.New("t").Parse(`Hello {{.Name}}`)
+	r.SetHTMLTemplate(templ)
+
+	type TestData struct{ Name string }
+
+	r.GET("/test", func(c *Context) {
+		c.HTML(200, "t", TestData{"alexandernyquist"})
+	})
+
+	r.ServeHTTP(w, req)
+
+	if w.Body.String() != "Hello alexandernyquist" {
+		t.Errorf("Response should be Hello alexandernyquist, was: %s", w.Body.String())
+	}
+
+	if w.HeaderMap.Get("Content-Type") != "text/html" {
+		t.Errorf("Content-Type should be text/html, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}
+
+// TestContextString tests that the response is returned
+// with Content-Type set to text/plain
+func TestContextString(t *testing.T) {
+	req, _ := http.NewRequest("GET", "/test", nil)
+	w := httptest.NewRecorder()
+
+	r := New()
+	r.GET("/test", func(c *Context) {
+		c.String(200, "test")
+	})
+
+	r.ServeHTTP(w, req)
+
+	if w.Body.String() != "test" {
+		t.Errorf("Response should be test, was: %s", w.Body.String())
+	}
+
+	if w.HeaderMap.Get("Content-Type") != "text/plain" {
+		t.Errorf("Content-Type should be text/plain, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}
+
+// TestContextXML tests that the response is serialized as XML
+// and Content-Type is set to application/xml
+func TestContextXML(t *testing.T) {
+	req, _ := http.NewRequest("GET", "/test", nil)
+	w := httptest.NewRecorder()
+
+	r := New()
+	r.GET("/test", func(c *Context) {
+		c.XML(200, H{"foo": "bar"})
+	})
+
+	r.ServeHTTP(w, req)
+
+	if w.Body.String() != "<map><foo>bar</foo></map>" {
+		t.Errorf("Response should be <map><foo>bar</foo></map>, was: %s", w.Body.String())
+	}
+
+	if w.HeaderMap.Get("Content-Type") != "application/xml" {
+		t.Errorf("Content-Type should be application/xml, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}
+
+// TestContextData tests that the response can be written from `bytesting`
+// with specified MIME type
+func TestContextData(t *testing.T) {
+	req, _ := http.NewRequest("GET", "/test/csv", nil)
+	w := httptest.NewRecorder()
+
+	r := New()
+	r.GET("/test/csv", func(c *Context) {
+		c.Data(200, "text/csv", []byte(`foo,bar`))
+	})
+
+	r.ServeHTTP(w, req)
+
+	if w.Body.String() != "foo,bar" {
+		t.Errorf("Response should be foo&bar, was: %s", w.Body.String())
+	}
+
+	if w.HeaderMap.Get("Content-Type") != "text/csv" {
+		t.Errorf("Content-Type should be text/csv, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}
+
+func TestContextFile(t *testing.T) {
+	req, _ := http.NewRequest("GET", "/test/file", nil)
+	w := httptest.NewRecorder()
+
+	r := New()
+	r.GET("/test/file", func(c *Context) {
+		c.File("./gin.go")
+	})
+
+	r.ServeHTTP(w, req)
+
+	bodyAsString := w.Body.String()
+
+	if len(bodyAsString) == 0 {
+		t.Errorf("Got empty body instead of file data")
+	}
+
+	if w.HeaderMap.Get("Content-Type") != "text/plain; charset=utf-8" {
+		t.Errorf("Content-Type should be text/plain; charset=utf-8, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}
+
+// TestHandlerFunc - ensure that custom middleware works properly
+func TestHandlerFunc(t *testing.T) {
+
+	req, _ := http.NewRequest("GET", "/", nil)
+	w := httptest.NewRecorder()
+
+	r := New()
+	var stepsPassed int = 0
+
+	r.Use(func(context *Context) {
+		stepsPassed += 1
+		context.Next()
+		stepsPassed += 1
+	})
+
+	r.ServeHTTP(w, req)
+
+	if w.Code != 404 {
+		t.Errorf("Response code should be Not found, was: %s", w.Code)
+	}
+
+	if stepsPassed != 2 {
+		t.Errorf("Falied to switch context in handler function: %s", stepsPassed)
+	}
+}
+
+// TestBadAbortHandlersChain - ensure that Abort after switch context will not interrupt pending handlers
+func TestBadAbortHandlersChain(t *testing.T) {
+	// SETUP
+	var stepsPassed int = 0
+	r := New()
+	r.Use(func(c *Context) {
+		stepsPassed += 1
+		c.Next()
+		stepsPassed += 1
+		// after check and abort
+		c.Abort(409)
+	})
+	r.Use(func(c *Context) {
+		stepsPassed += 1
+		c.Next()
+		stepsPassed += 1
+		c.Abort(403)
+	})
+
+	// RUN
+	w := PerformRequest(r, "GET", "/")
+
+	// TEST
+	if w.Code != 409 {
+		t.Errorf("Response code should be Forbiden, was: %d", w.Code)
+	}
+	if stepsPassed != 4 {
+		t.Errorf("Falied to switch context in handler function: %d", stepsPassed)
+	}
+}
+
+// TestAbortHandlersChain - ensure that Abort interrupt used middlewares in fifo order
+func TestAbortHandlersChain(t *testing.T) {
+	// SETUP
+	var stepsPassed int = 0
+	r := New()
+	r.Use(func(context *Context) {
+		stepsPassed += 1
+		context.Abort(409)
+	})
+	r.Use(func(context *Context) {
+		stepsPassed += 1
+		context.Next()
+		stepsPassed += 1
+	})
+
+	// RUN
+	w := PerformRequest(r, "GET", "/")
+
+	// TEST
+	if w.Code != 409 {
+		t.Errorf("Response code should be Conflict, was: %d", w.Code)
+	}
+	if stepsPassed != 1 {
+		t.Errorf("Falied to switch context in handler function: %d", stepsPassed)
+	}
+}
+
+// TestFailHandlersChain - ensure that Fail interrupt used middlewares in fifo order as
+// as well as Abort
+func TestFailHandlersChain(t *testing.T) {
+	// SETUP
+	var stepsPassed int = 0
+	r := New()
+	r.Use(func(context *Context) {
+		stepsPassed += 1
+		context.Fail(500, errors.New("foo"))
+	})
+	r.Use(func(context *Context) {
+		stepsPassed += 1
+		context.Next()
+		stepsPassed += 1
+	})
+
+	// RUN
+	w := PerformRequest(r, "GET", "/")
+
+	// TEST
+	if w.Code != 500 {
+		t.Errorf("Response code should be Server error, was: %d", w.Code)
+	}
+	if stepsPassed != 1 {
+		t.Errorf("Falied to switch context in handler function: %d", stepsPassed)
+	}
+}
+
+func TestBindingJSON(t *testing.T) {
+
+	body := bytes.NewBuffer([]byte("{\"foo\":\"bar\"}"))
+
+	r := New()
+	r.POST("/binding/json", func(c *Context) {
+		var body struct {
+			Foo string `json:"foo"`
+		}
+		if c.Bind(&body) {
+			c.JSON(200, H{"parsed": body.Foo})
+		}
+	})
+
+	req, _ := http.NewRequest("POST", "/binding/json", body)
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+
+	r.ServeHTTP(w, req)
+
+	if w.Code != 200 {
+		t.Errorf("Response code should be Ok, was: %s", w.Code)
+	}
+
+	if w.Body.String() != "{\"parsed\":\"bar\"}\n" {
+		t.Errorf("Response should be {\"parsed\":\"bar\"}, was: %s", w.Body.String())
+	}
+
+	if w.HeaderMap.Get("Content-Type") != "application/json" {
+		t.Errorf("Content-Type should be application/json, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}
+
+func TestBindingJSONEncoding(t *testing.T) {
+
+	body := bytes.NewBuffer([]byte("{\"foo\":\"嘉\"}"))
+
+	r := New()
+	r.POST("/binding/json", func(c *Context) {
+		var body struct {
+			Foo string `json:"foo"`
+		}
+		if c.Bind(&body) {
+			c.JSON(200, H{"parsed": body.Foo})
+		}
+	})
+
+	req, _ := http.NewRequest("POST", "/binding/json", body)
+	req.Header.Set("Content-Type", "application/json; charset=utf-8")
+	w := httptest.NewRecorder()
+
+	r.ServeHTTP(w, req)
+
+	if w.Code != 200 {
+		t.Errorf("Response code should be Ok, was: %s", w.Code)
+	}
+
+	if w.Body.String() != "{\"parsed\":\"嘉\"}\n" {
+		t.Errorf("Response should be {\"parsed\":\"嘉\"}, was: %s", w.Body.String())
+	}
+
+	if w.HeaderMap.Get("Content-Type") != "application/json" {
+		t.Errorf("Content-Type should be application/json, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}
+
+func TestBindingJSONNoContentType(t *testing.T) {
+
+	body := bytes.NewBuffer([]byte("{\"foo\":\"bar\"}"))
+
+	r := New()
+	r.POST("/binding/json", func(c *Context) {
+		var body struct {
+			Foo string `json:"foo"`
+		}
+		if c.Bind(&body) {
+			c.JSON(200, H{"parsed": body.Foo})
+		}
+
+	})
+
+	req, _ := http.NewRequest("POST", "/binding/json", body)
+	w := httptest.NewRecorder()
+
+	r.ServeHTTP(w, req)
+
+	if w.Code != 400 {
+		t.Errorf("Response code should be Bad request, was: %s", w.Code)
+	}
+
+	if w.Body.String() == "{\"parsed\":\"bar\"}\n" {
+		t.Errorf("Response should not be {\"parsed\":\"bar\"}, was: %s", w.Body.String())
+	}
+
+	if w.HeaderMap.Get("Content-Type") == "application/json" {
+		t.Errorf("Content-Type should not be application/json, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}
+
+func TestBindingJSONMalformed(t *testing.T) {
+
+	body := bytes.NewBuffer([]byte("\"foo\":\"bar\"\n"))
+
+	r := New()
+	r.POST("/binding/json", func(c *Context) {
+		var body struct {
+			Foo string `json:"foo"`
+		}
+		if c.Bind(&body) {
+			c.JSON(200, H{"parsed": body.Foo})
+		}
+
+	})
+
+	req, _ := http.NewRequest("POST", "/binding/json", body)
+	req.Header.Set("Content-Type", "application/json")
+
+	w := httptest.NewRecorder()
+
+	r.ServeHTTP(w, req)
+
+	if w.Code != 400 {
+		t.Errorf("Response code should be Bad request, was: %s", w.Code)
+	}
+	if w.Body.String() == "{\"parsed\":\"bar\"}\n" {
+		t.Errorf("Response should not be {\"parsed\":\"bar\"}, was: %s", w.Body.String())
+	}
+
+	if w.HeaderMap.Get("Content-Type") == "application/json" {
+		t.Errorf("Content-Type should not be application/json, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}

gin.go

@@ -1,6 +1,7 @@
 package gin
 
 import (
+	"fmt"
 	"github.com/gin-gonic/gin/render"
 	"github.com/julienschmidt/httprouter"
 	"html/template"
@@ -45,10 +46,15 @@ type (
 
 func (engine *Engine) handle404(w http.ResponseWriter, req *http.Request) {
 	c := engine.createContext(w, req, nil, engine.finalNoRoute)
-	c.Writer.setStatus(404)
+	// set 404 by default, useful for logging
+	c.Writer.WriteHeader(404)
 	c.Next()
 	if !c.Writer.Written() {
-		c.Data(404, MIMEPlain, []byte("404 page not found"))
+		if c.Writer.Status() == 404 {
+			c.Data(-1, MIMEPlain, []byte("404 page not found"))
+		} else {
+			c.Writer.WriteHeaderNow()
+		}
 	}
 	engine.cache.Put(c)
 }
@@ -76,13 +82,21 @@ func Default() *Engine {
 }
 
 func (engine *Engine) LoadHTMLGlob(pattern string) {
-	templ := template.Must(template.ParseGlob(pattern))
-	engine.SetHTMLTemplate(templ)
+	if gin_mode == debugCode {
+		engine.HTMLRender = render.HTMLDebug
+	} else {
+		templ := template.Must(template.ParseGlob(pattern))
+		engine.SetHTMLTemplate(templ)
+	}
 }
 
 func (engine *Engine) LoadHTMLFiles(files ...string) {
-	templ := template.Must(template.ParseFiles(files...))
-	engine.SetHTMLTemplate(templ)
+	if gin_mode == debugCode {
+		engine.HTMLRender = render.HTMLDebug
+	} else {
+		templ := template.Must(template.ParseFiles(files...))
+		engine.SetHTMLTemplate(templ)
+	}
 }
 
 func (engine *Engine) SetHTMLTemplate(templ *template.Template) {
@@ -108,12 +122,18 @@ func (engine *Engine) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 }
 
 func (engine *Engine) Run(addr string) {
+	if gin_mode == debugCode {
+		fmt.Println("[GIN-debug] Listening and serving HTTP on " + addr)
+	}
 	if err := http.ListenAndServe(addr, engine); err != nil {
 		panic(err)
 	}
 }
 
 func (engine *Engine) RunTLS(addr string, cert string, key string) {
+	if gin_mode == debugCode {
+		fmt.Println("[GIN-debug] Listening and serving HTTPS on " + addr)
+	}
 	if err := http.ListenAndServeTLS(addr, cert, key, engine); err != nil {
 		panic(err)
 	}
@@ -163,9 +183,15 @@ func (group *RouterGroup) pathFor(p string) string {
 func (group *RouterGroup) Handle(method, p string, handlers []HandlerFunc) {
 	p = group.pathFor(p)
 	handlers = group.combineHandlers(handlers)
+	if gin_mode == debugCode {
+		nuHandlers := len(handlers)
+		name := funcName(handlers[nuHandlers-1])
+		fmt.Printf("[GIN-debug] %-5s %-25s --> %s (%d handlers)\n", method, p, name, nuHandlers)
+	}
 	group.engine.router.Handle(method, p, func(w http.ResponseWriter, req *http.Request, params httprouter.Params) {
 		c := group.engine.createContext(w, req, params, handlers)
 		c.Next()
+		c.Writer.WriteHeaderNow()
 		group.engine.cache.Put(c)
 	})
 }

gin_test.go

@@ -0,0 +1,203 @@
+package gin
+
+import (
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path"
+	"strings"
+	"testing"
+)
+
+func init() {
+	SetMode(TestMode)
+}
+
+func PerformRequest(r http.Handler, method, path string) *httptest.ResponseRecorder {
+	req, _ := http.NewRequest(method, path, nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+	return w
+}
+
+// TestSingleRouteOK tests that POST route is correctly invoked.
+func testRouteOK(method string, t *testing.T) {
+	// SETUP
+	passed := false
+	r := New()
+	r.Handle(method, "/test", []HandlerFunc{func(c *Context) {
+		passed = true
+	}})
+
+	// RUN
+	w := PerformRequest(r, method, "/test")
+
+	// TEST
+	if passed == false {
+		t.Errorf(method + " route handler was not invoked.")
+	}
+	if w.Code != http.StatusOK {
+		t.Errorf("Status code should be %v, was %d", http.StatusOK, w.Code)
+	}
+}
+func TestRouterGroupRouteOK(t *testing.T) {
+	testRouteOK("POST", t)
+	testRouteOK("DELETE", t)
+	testRouteOK("PATCH", t)
+	testRouteOK("PUT", t)
+	testRouteOK("OPTIONS", t)
+	testRouteOK("HEAD", t)
+}
+
+// TestSingleRouteOK tests that POST route is correctly invoked.
+func testRouteNotOK(method string, t *testing.T) {
+	// SETUP
+	passed := false
+	r := New()
+	r.Handle(method, "/test_2", []HandlerFunc{func(c *Context) {
+		passed = true
+	}})
+
+	// RUN
+	w := PerformRequest(r, method, "/test")
+
+	// TEST
+	if passed == true {
+		t.Errorf(method + " route handler was invoked, when it should not")
+	}
+	if w.Code != http.StatusNotFound {
+		// If this fails, it's because httprouter needs to be updated to at least f78f58a0db
+		t.Errorf("Status code should be %v, was %d. Location: %s", http.StatusNotFound, w.Code, w.HeaderMap.Get("Location"))
+	}
+}
+
+// TestSingleRouteOK tests that POST route is correctly invoked.
+func TestRouteNotOK(t *testing.T) {
+	testRouteNotOK("POST", t)
+	testRouteNotOK("DELETE", t)
+	testRouteNotOK("PATCH", t)
+	testRouteNotOK("PUT", t)
+	testRouteNotOK("OPTIONS", t)
+	testRouteNotOK("HEAD", t)
+}
+
+// TestSingleRouteOK tests that POST route is correctly invoked.
+func testRouteNotOK2(method string, t *testing.T) {
+	// SETUP
+	passed := false
+	r := New()
+	var methodRoute string
+	if method == "POST" {
+		methodRoute = "GET"
+	} else {
+		methodRoute = "POST"
+	}
+	r.Handle(methodRoute, "/test", []HandlerFunc{func(c *Context) {
+		passed = true
+	}})
+
+	// RUN
+	w := PerformRequest(r, method, "/test")
+
+	// TEST
+	if passed == true {
+		t.Errorf(method + " route handler was invoked, when it should not")
+	}
+	if w.Code != http.StatusNotFound {
+		// If this fails, it's because httprouter needs to be updated to at least f78f58a0db
+		t.Errorf("Status code should be %v, was %d. Location: %s", http.StatusNotFound, w.Code, w.HeaderMap.Get("Location"))
+	}
+}
+
+// TestSingleRouteOK tests that POST route is correctly invoked.
+func TestRouteNotOK2(t *testing.T) {
+	testRouteNotOK2("POST", t)
+	testRouteNotOK2("DELETE", t)
+	testRouteNotOK2("PATCH", t)
+	testRouteNotOK2("PUT", t)
+	testRouteNotOK2("OPTIONS", t)
+	testRouteNotOK2("HEAD", t)
+}
+
+// TestHandleStaticFile - ensure the static file handles properly
+func TestHandleStaticFile(t *testing.T) {
+	// SETUP file
+	testRoot, _ := os.Getwd()
+	f, err := ioutil.TempFile(testRoot, "")
+	if err != nil {
+		t.Error(err)
+	}
+	defer os.Remove(f.Name())
+	filePath := path.Join("/", path.Base(f.Name()))
+	f.WriteString("Gin Web Framework")
+	f.Close()
+
+	// SETUP gin
+	r := New()
+	r.Static("./", testRoot)
+
+	// RUN
+	w := PerformRequest(r, "GET", filePath)
+
+	// TEST
+	if w.Code != 200 {
+		t.Errorf("Response code should be Ok, was: %s", w.Code)
+	}
+	if w.Body.String() != "Gin Web Framework" {
+		t.Errorf("Response should be test, was: %s", w.Body.String())
+	}
+	if w.HeaderMap.Get("Content-Type") != "text/plain; charset=utf-8" {
+		t.Errorf("Content-Type should be text/plain, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}
+
+// TestHandleStaticDir - ensure the root/sub dir handles properly
+func TestHandleStaticDir(t *testing.T) {
+	// SETUP
+	r := New()
+	r.Static("/", "./")
+
+	// RUN
+	w := PerformRequest(r, "GET", "/")
+
+	// TEST
+	bodyAsString := w.Body.String()
+	if w.Code != 200 {
+		t.Errorf("Response code should be Ok, was: %s", w.Code)
+	}
+	if len(bodyAsString) == 0 {
+		t.Errorf("Got empty body instead of file tree")
+	}
+	if !strings.Contains(bodyAsString, "gin.go") {
+		t.Errorf("Can't find:`gin.go` in file tree: %s", bodyAsString)
+	}
+	if w.HeaderMap.Get("Content-Type") != "text/html; charset=utf-8" {
+		t.Errorf("Content-Type should be text/plain, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}
+
+// TestHandleHeadToDir - ensure the root/sub dir handles properly
+func TestHandleHeadToDir(t *testing.T) {
+	// SETUP
+	r := New()
+	r.Static("/", "./")
+
+	// RUN
+	w := PerformRequest(r, "HEAD", "/")
+
+	// TEST
+	bodyAsString := w.Body.String()
+	if w.Code != 200 {
+		t.Errorf("Response code should be Ok, was: %s", w.Code)
+	}
+	if len(bodyAsString) == 0 {
+		t.Errorf("Got empty body instead of file tree")
+	}
+	if !strings.Contains(bodyAsString, "gin.go") {
+		t.Errorf("Can't find:`gin.go` in file tree: %s", bodyAsString)
+	}
+	if w.HeaderMap.Get("Content-Type") != "text/html; charset=utf-8" {
+		t.Errorf("Content-Type should be text/plain, was %s", w.HeaderMap.Get("Content-Type"))
+	}
+}

logger.go

@@ -44,12 +44,11 @@ func Logger() HandlerFunc {
 		// save the IP of the requester
 		requester := c.Request.Header.Get("X-Real-IP")
 		// if the requester-header is empty, check the forwarded-header
-		if requester == "" {
+		if len(requester) == 0 {
 			requester = c.Request.Header.Get("X-Forwarded-For")
 		}
-
 		// if the requester is still empty, use the hard-coded address from the socket
-		if requester == "" {
+		if len(requester) == 0 {
 			requester = c.Request.RemoteAddr
 		}
 

mode.go

@@ -0,0 +1,42 @@
+package gin
+
+import (
+	"os"
+)
+
+const GIN_MODE = "GIN_MODE"
+
+const (
+	DebugMode   string = "debug"
+	ReleaseMode string = "release"
+	TestMode    string = "test"
+)
+const (
+	debugCode   = iota
+	releaseCode = iota
+	testCode    = iota
+)
+
+var gin_mode int = debugCode
+
+func SetMode(value string) {
+	switch value {
+	case DebugMode:
+		gin_mode = debugCode
+	case ReleaseMode:
+		gin_mode = releaseCode
+	case TestMode:
+		gin_mode = testCode
+	default:
+		panic("gin mode unknown, the allowed modes are: " + DebugMode + " and " + ReleaseMode)
+	}
+}
+
+func init() {
+	value := os.Getenv(GIN_MODE)
+	if len(value) == 0 {
+		SetMode(DebugMode)
+	} else {
+		SetMode(value)
+	}
+}

recovery_test.go

@@ -0,0 +1,52 @@
+package gin
+
+import (
+	"bytes"
+	"log"
+	"os"
+	"testing"
+)
+
+// TestPanicInHandler assert that panic has been recovered.
+func TestPanicInHandler(t *testing.T) {
+	// SETUP
+	log.SetOutput(bytes.NewBuffer(nil)) // Disable panic logs for testing
+	r := New()
+	r.Use(Recovery())
+	r.GET("/recovery", func(_ *Context) {
+		panic("Oupps, Houston, we have a problem")
+	})
+
+	// RUN
+	w := PerformRequest(r, "GET", "/recovery")
+
+	// restore logging
+	log.SetOutput(os.Stderr)
+
+	if w.Code != 500 {
+		t.Errorf("Response code should be Internal Server Error, was: %s", w.Code)
+	}
+}
+
+// TestPanicWithAbort assert that panic has been recovered even if context.Abort was used.
+func TestPanicWithAbort(t *testing.T) {
+	// SETUP
+	log.SetOutput(bytes.NewBuffer(nil))
+	r := New()
+	r.Use(Recovery())
+	r.GET("/recovery", func(c *Context) {
+		c.Abort(400)
+		panic("Oupps, Houston, we have a problem")
+	})
+
+	// RUN
+	w := PerformRequest(r, "GET", "/recovery")
+
+	// restore logging
+	log.SetOutput(os.Stderr)
+
+	// TEST
+	if w.Code != 500 {
+		t.Errorf("Response code should be Bad request, was: %s", w.Code)
+	}
+}

render/render.go

@@ -22,6 +22,12 @@ type (
 	// Plain text
 	plainRender struct{}
 
+	// Redirects
+	redirectRender struct{}
+
+	// Redirects
+	htmlDebugRender struct{}
+
 	// form binding
 	HTMLRender struct {
 		Template *template.Template
@@ -29,16 +35,16 @@ type (
 )
 
 var (
-	JSON  = jsonRender{}
-	XML   = xmlRender{}
-	Plain = plainRender{}
+	JSON      = jsonRender{}
+	XML       = xmlRender{}
+	Plain     = plainRender{}
+	Redirect  = redirectRender{}
+	HTMLDebug = htmlDebugRender{}
 )
 
 func writeHeader(w http.ResponseWriter, code int, contentType string) {
-	if code >= 0 {
-		w.Header().Set("Content-Type", contentType)
-		w.WriteHeader(code)
-	}
+	w.Header().Set("Content-Type", contentType)
+	w.WriteHeader(code)
 }
 
 func (_ jsonRender) Render(w http.ResponseWriter, code int, data ...interface{}) error {
@@ -47,19 +53,18 @@ func (_ jsonRender) Render(w http.ResponseWriter, code int, data ...interface{})
 	return encoder.Encode(data[0])
 }
 
+func (_ redirectRender) Render(w http.ResponseWriter, code int, data ...interface{}) error {
+	w.Header().Set("Location", data[0].(string))
+	w.WriteHeader(code)
+	return nil
+}
+
 func (_ xmlRender) Render(w http.ResponseWriter, code int, data ...interface{}) error {
 	writeHeader(w, code, "application/xml")
 	encoder := xml.NewEncoder(w)
 	return encoder.Encode(data[0])
 }
 
-func (html HTMLRender) Render(w http.ResponseWriter, code int, data ...interface{}) error {
-	writeHeader(w, code, "text/html")
-	file := data[0].(string)
-	obj := data[1]
-	return html.Template.ExecuteTemplate(w, file, obj)
-}
-
 func (_ plainRender) Render(w http.ResponseWriter, code int, data ...interface{}) error {
 	writeHeader(w, code, "text/plain")
 	format := data[0].(string)
@@ -72,3 +77,21 @@ func (_ plainRender) Render(w http.ResponseWriter, code int, data ...interface{}
 	}
 	return err
 }
+
+func (_ htmlDebugRender) Render(w http.ResponseWriter, code int, data ...interface{}) error {
+	writeHeader(w, code, "text/html")
+	file := data[0].(string)
+	obj := data[1]
+	t, err := template.ParseFiles(file)
+	if err != nil {
+		return err
+	}
+	return t.ExecuteTemplate(w, file, obj)
+}
+
+func (html HTMLRender) Render(w http.ResponseWriter, code int, data ...interface{}) error {
+	writeHeader(w, code, "text/html")
+	file := data[0].(string)
+	obj := data[1]
+	return html.Template.ExecuteTemplate(w, file, obj)
+}

response_writer.go

@@ -1,6 +1,7 @@
 package gin
 
 import (
+	"log"
 	"net/http"
 )
 
@@ -9,9 +10,7 @@ type (
 		http.ResponseWriter
 		Status() int
 		Written() bool
-
-		// private
-		setStatus(int)
+		WriteHeaderNow()
 	}
 
 	responseWriter struct {
@@ -23,18 +22,29 @@ type (
 
 func (w *responseWriter) reset(writer http.ResponseWriter) {
 	w.ResponseWriter = writer
-	w.status = 0
+	w.status = 200
 	w.written = false
 }
 
-func (w *responseWriter) setStatus(code int) {
-	w.status = code
+func (w *responseWriter) WriteHeader(code int) {
+	if code != 0 {
+		w.status = code
+		if w.written {
+			log.Println("[GIN] WARNING. Headers were already written!")
+		}
+	}
 }
 
-func (w *responseWriter) WriteHeader(code int) {
-	w.status = code
-	w.written = true
-	w.ResponseWriter.WriteHeader(code)
+func (w *responseWriter) WriteHeaderNow() {
+	if !w.written {
+		w.written = true
+		w.ResponseWriter.WriteHeader(w.status)
+	}
+}
+
+func (w *responseWriter) Write(data []byte) (n int, err error) {
+	w.WriteHeaderNow()
+	return w.ResponseWriter.Write(data)
 }
 
 func (w *responseWriter) Status() int {

utils.go

@@ -2,6 +2,8 @@ package gin
 
 import (
 	"encoding/xml"
+	"reflect"
+	"runtime"
 )
 
 type H map[string]interface{}
@@ -38,3 +40,7 @@ func filterFlags(content string) string {
 	}
 	return content
 }
+
+func funcName(f interface{}) string {
+	return runtime.FuncForPC(reflect.ValueOf(f).Pointer()).Name()
+}