Add Skipper Unit Test In BasicBasicAuthConfig and Add More Detail Explanation regarding BasicAuthValidator (#2461)

* Add Skipper Unit Test In BasicBasicAuthConfig and Add More detail explanation regarding BasicAuthValidator

* Simplify Skipper Unit Test

middleware/basic_auth.go

@@ -25,6 +25,8 @@ type (
 	}
 
 	// BasicAuthValidator defines a function to validate BasicAuth credentials.
+	// The function should return a boolean indicating whether the credentials are valid,
+	// and an error if any error occurs during the validation process.
 	BasicAuthValidator func(string, string, echo.Context) (bool, error)
 )
 

middleware/basic_auth_test.go

@@ -32,7 +32,6 @@ func TestBasicAuth(t *testing.T) {
 	assert.NoError(t, h(c))
 
 	h = BasicAuthWithConfig(BasicAuthConfig{
-		Skipper:   nil,
 		Validator: f,
 		Realm:     "someRealm",
 	})(func(c echo.Context) error {
@@ -72,4 +71,20 @@ func TestBasicAuth(t *testing.T) {
 	req.Header.Set(echo.HeaderAuthorization, auth)
 	he = h(c).(*echo.HTTPError)
 	assert.Equal(t, http.StatusUnauthorized, he.Code)
+
+	h = BasicAuthWithConfig(BasicAuthConfig{
+		Validator: f,
+		Realm:     "someRealm",
+		Skipper: func(c echo.Context) bool {
+			return true
+		},
+	})(func(c echo.Context) error {
+		return c.String(http.StatusOK, "test")
+	})
+
+	// Skipped Request
+	auth = basic + " " + base64.StdEncoding.EncodeToString([]byte("joe:skip"))
+	req.Header.Set(echo.HeaderAuthorization, auth)
+	assert.NoError(t, h(c))
+
 }