First commit

middleware/replacer_test.go

@@ -0,0 +1,124 @@
+package middleware
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func TestNewReplacer(t *testing.T) {
+	w := httptest.NewRecorder()
+	recordRequest := NewResponseRecorder(w)
+	reader := strings.NewReader(`{"username": "dennis"}`)
+
+	request, err := http.NewRequest("POST", "http://localhost", reader)
+	if err != nil {
+		t.Fatal("Request Formation Failed\n")
+	}
+	replaceValues := NewReplacer(request, recordRequest, "")
+
+	switch v := replaceValues.(type) {
+	case replacer:
+
+		if v.replacements["{host}"] != "localhost" {
+			t.Error("Expected host to be localhost")
+		}
+		if v.replacements["{method}"] != "POST" {
+			t.Error("Expected request method  to be POST")
+		}
+		if v.replacements["{status}"] != "200" {
+			t.Error("Expected status to be 200")
+		}
+
+	default:
+		t.Fatal("Return Value from New Replacer expected pass type assertion into a replacer type\n")
+	}
+}
+
+func TestReplace(t *testing.T) {
+	w := httptest.NewRecorder()
+	recordRequest := NewResponseRecorder(w)
+	reader := strings.NewReader(`{"username": "dennis"}`)
+
+	request, err := http.NewRequest("POST", "http://localhost", reader)
+	if err != nil {
+		t.Fatal("Request Formation Failed\n")
+	}
+	request.Header.Set("Custom", "foobarbaz")
+	request.Header.Set("ShorterVal", "1")
+	repl := NewReplacer(request, recordRequest, "-")
+
+	if expected, actual := "This host is localhost.", repl.Replace("This host is {host}."); expected != actual {
+		t.Errorf("{host} replacement: expected '%s', got '%s'", expected, actual)
+	}
+	if expected, actual := "This request method is POST.", repl.Replace("This request method is {method}."); expected != actual {
+		t.Errorf("{method} replacement: expected '%s', got '%s'", expected, actual)
+	}
+	if expected, actual := "The response status is 200.", repl.Replace("The response status is {status}."); expected != actual {
+		t.Errorf("{status} replacement: expected '%s', got '%s'", expected, actual)
+	}
+	if expected, actual := "The Custom header is foobarbaz.", repl.Replace("The Custom header is {>Custom}."); expected != actual {
+		t.Errorf("{>Custom} replacement: expected '%s', got '%s'", expected, actual)
+	}
+
+	// Test header case-insensitivity
+	if expected, actual := "The cUsToM header is foobarbaz...", repl.Replace("The cUsToM header is {>cUsToM}..."); expected != actual {
+		t.Errorf("{>cUsToM} replacement: expected '%s', got '%s'", expected, actual)
+	}
+
+	// Test non-existent header/value
+	if expected, actual := "The Non-Existent header is -.", repl.Replace("The Non-Existent header is {>Non-Existent}."); expected != actual {
+		t.Errorf("{>Non-Existent} replacement: expected '%s', got '%s'", expected, actual)
+	}
+
+	// Test bad placeholder
+	if expected, actual := "Bad {host placeholder...", repl.Replace("Bad {host placeholder..."); expected != actual {
+		t.Errorf("bad placeholder: expected '%s', got '%s'", expected, actual)
+	}
+
+	// Test bad header placeholder
+	if expected, actual := "Bad {>Custom placeholder", repl.Replace("Bad {>Custom placeholder"); expected != actual {
+		t.Errorf("bad header placeholder: expected '%s', got '%s'", expected, actual)
+	}
+
+	// Test bad header placeholder with valid one later
+	if expected, actual := "Bad -", repl.Replace("Bad {>Custom placeholder {>ShorterVal}"); expected != actual {
+		t.Errorf("bad header placeholders: expected '%s', got '%s'", expected, actual)
+	}
+
+	// Test shorter header value with multiple placeholders
+	if expected, actual := "Short value 1 then foobarbaz.", repl.Replace("Short value {>ShorterVal} then {>Custom}."); expected != actual {
+		t.Errorf("short value: expected '%s', got '%s'", expected, actual)
+	}
+}
+
+func TestSet(t *testing.T) {
+	w := httptest.NewRecorder()
+	recordRequest := NewResponseRecorder(w)
+	reader := strings.NewReader(`{"username": "dennis"}`)
+
+	request, err := http.NewRequest("POST", "http://localhost", reader)
+	if err != nil {
+		t.Fatalf("Request Formation Failed \n")
+	}
+	repl := NewReplacer(request, recordRequest, "")
+
+	repl.Set("host", "getcaddy.com")
+	repl.Set("method", "GET")
+	repl.Set("status", "201")
+	repl.Set("variable", "value")
+
+	if repl.Replace("This host is {host}") != "This host is getcaddy.com" {
+		t.Error("Expected host replacement failed")
+	}
+	if repl.Replace("This request method is {method}") != "This request method is GET" {
+		t.Error("Expected method replacement failed")
+	}
+	if repl.Replace("The response status is {status}") != "The response status is 201" {
+		t.Error("Expected status replacement failed")
+	}
+	if repl.Replace("The value of variable is {variable}") != "The value of variable is value" {
+		t.Error("Expected variable replacement failed")
+	}
+}