Implement webhook branch filter (#7791)

* Fix validate() function to handle errors in embedded anon structs

* Implement webhook branch filter

See #2025, #3998.

modules/validation/glob_pattern_test.go

@@ -0,0 +1,62 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package validation
+
+import (
+	"testing"
+
+	"gitea.com/macaron/binding"
+	"github.com/gobwas/glob"
+)
+
+func getGlobPatternErrorString(pattern string) string {
+	// It would be unwise to rely on that glob
+	// compilation errors don't ever change.
+	if _, err := glob.Compile(pattern); err != nil {
+		return err.Error()
+	}
+	return ""
+}
+
+var globValidationTestCases = []validationTestCase{
+	{
+		description: "Empty glob pattern",
+		data: TestForm{
+			GlobPattern: "",
+		},
+		expectedErrors: binding.Errors{},
+	},
+	{
+		description: "Valid glob",
+		data: TestForm{
+			GlobPattern: "{master,release*}",
+		},
+		expectedErrors: binding.Errors{},
+	},
+
+	{
+		description: "Invalid glob",
+		data: TestForm{
+			GlobPattern: "[a-",
+		},
+		expectedErrors: binding.Errors{
+			binding.Error{
+				FieldNames:     []string{"GlobPattern"},
+				Classification: ErrGlobPattern,
+				Message:        getGlobPatternErrorString("[a-"),
+			},
+		},
+	},
+}
+
+func Test_GlobPatternValidation(t *testing.T) {
+	AddBindingRules()
+
+	for _, testCase := range globValidationTestCases {
+		t.Run(testCase.description, func(t *testing.T) {
+			performValidationTest(t, testCase)
+		})
+	}
+}