Add Content to serve a file from http.FileSystem (#62)

file.go

@@ -4,7 +4,17 @@
 
 package tango
 
-import "path/filepath"
+import (
+	"net/http"
+	"path/filepath"
+)
+
+// Content returns a handle to serve a file
+func Content(path string, fs http.FileSystem) func(ctx *Context) {
+	return func(ctx *Context) {
+		ctx.ServeContent(path, fs)
+	}
+}
 
 // File returns a handle to serve a file
 func File(path string) func(ctx *Context) {

file_test.go

@@ -87,3 +87,22 @@ func TestFile1(t *testing.T) {
 	refute(t, len(buff.String()), 0)
 	expect(t, buff.String(), "hello tango")
 }
+
+func TestContent1(t *testing.T) {
+	buff := bytes.NewBufferString("")
+	recorder := httptest.NewRecorder()
+	recorder.Body = buff
+
+	tg := New()
+	tg.Get("/test.html", Content("test.html", http.Dir("./public")))
+
+	req, err := http.NewRequest("GET", "http://localhost:8000/test.html", nil)
+	if err != nil {
+		t.Error(err)
+	}
+
+	tg.ServeHTTP(recorder, req)
+	expect(t, recorder.Code, http.StatusOK)
+	refute(t, len(buff.String()), 0)
+	expect(t, buff.String(), "hello tango")
+}