v0.1.0 initial commit, auth features exatracted from logwisp to be a standalone utility package

http_test.go

@@ -0,0 +1,54 @@
+// FILE: auth/http_test.go
+package auth
+
+import (
+	"encoding/base64"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestHTTPAuthParsing(t *testing.T) {
+	// Test Basic Auth
+	basicHeader := "Basic " + base64.StdEncoding.EncodeToString([]byte("user:pass"))
+	username, password, err := ParseBasicAuth(basicHeader)
+	require.NoError(t, err)
+	assert.Equal(t, "user", username)
+	assert.Equal(t, "pass", password)
+
+	// Test Bearer Token
+	bearerHeader := "Bearer test-token-xyz"
+	token, err := ParseBearerToken(bearerHeader)
+	require.NoError(t, err)
+	assert.Equal(t, "test-token-xyz", token)
+
+	// Test ExtractAuthType
+	assert.Equal(t, "Basic", ExtractAuthType(basicHeader))
+	assert.Equal(t, "Bearer", ExtractAuthType(bearerHeader))
+	assert.Equal(t, "Custom", ExtractAuthType("Custom somedata"))
+	assert.Equal(t, "", ExtractAuthType("InvalidHeader"))
+
+	// Test invalid formats
+	_, _, err = ParseBasicAuth("Invalid header")
+	assert.Error(t, err)
+	assert.Equal(t, ErrAuthInvalidBasicFormat, err)
+
+	_, err = ParseBearerToken("Invalid header")
+	assert.Error(t, err)
+	assert.Equal(t, ErrAuthInvalidBearerFormat, err)
+
+	// Test malformed Basic auth
+	_, _, err = ParseBasicAuth("Basic not-base64!")
+	assert.Error(t, err)
+	assert.Equal(t, ErrAuthInvalidBasicEncoding, err)
+
+	_, _, err = ParseBasicAuth("Basic " + base64.StdEncoding.EncodeToString([]byte("no-colon")))
+	assert.Error(t, err)
+	assert.Equal(t, ErrAuthInvalidBasicCreds, err)
+
+	// Test empty Bearer token
+	_, err = ParseBearerToken("Bearer ")
+	assert.Error(t, err)
+	assert.Equal(t, ErrAuthEmptyBearerToken, err)
+}