extensions: Initial tests

middleware/extensions/ext_test.go

+package extensions
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/mholt/caddy/middleware"
+)
+
+func TestExtensions(t *testing.T) {
+	rootDir := os.TempDir()
+
+	// create a temporary page
+	path := filepath.Join(rootDir, "extensions_test.html")
+	_, err := os.Create(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.Remove(path)
+
+	for i, test := range []struct {
+		path        string
+		extensions  []string
+		expectedURL string
+	}{
+		{"/extensions_test", []string{".html"}, "/extensions_test.html"},
+		{"/extensions_test/", []string{".html"}, "/extensions_test/"},
+		{"/extensions_test", []string{".json"}, "/extensions_test"},
+		{"/another_test", []string{".html"}, "/another_test"},
+	} {
+		ex := Ext{
+			Next: middleware.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
+				return 0, nil
+			}),
+			Root:       rootDir,
+			Extensions: test.extensions,
+		}
+
+		req, err := http.NewRequest("GET", test.path, nil)
+		if err != nil {
+			t.Fatalf("Test %d: Could not create HTTP request: %v", i, err)
+		}
+
+		rec := httptest.NewRecorder()
+
+		ex.ServeHTTP(rec, req)
+
+		if got := req.URL.String(); got != test.expectedURL {
+			t.Fatalf("Test %d: Got unexpected request URL: %q, wanted %q", i, got, test.expectedURL)
+		}
+	}
+}