1 files changed, 79 insertions, 0 deletions
diff --git a/go/tools/builders/nolint_test.go b/go/tools/builders/nolint_test.go
new file mode 100644
index 00000000..2870eaaf
--- /dev/null
+++ b/go/tools/builders/nolint_test.go
@@ -0,0 +1,79 @@
+// Copyright 2023 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestParseNolint(t *testing.T) {
+	tests := []struct {
+		Name    string
+		Comment string
+		Valid   bool
+		Linters []string
+	}{
+		{
+			Name:    "Invalid",
+			Comment: "not a comment",
+		},
+		{
+			Name:    "No match",
+			Comment: "// comment",
+		},
+		{
+			Name:    "All linters",
+			Comment: "//nolint",
+			Valid:   true,
+		},
+		{
+			Name:    "All linters (explicit)",
+			Comment: "//nolint:all",
+			Valid:   true,
+		},
+		{
+			Name:    "Single linter",
+			Comment: "// nolint:foo",
+			Valid:   true,
+			Linters: []string{"foo"},
+		},
+		{
+			Name:    "Multiple linters",
+			Comment: "// nolint:a,b,c",
+			Valid:   true,
+			Linters: []string{"a", "b", "c"},
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.Name, func(t *testing.T) {
+			result, ok := parseNolint(tc.Comment)
+			if tc.Valid != ok {
+				t.Fatalf("parseNolint expect %t got %t", tc.Valid, ok)
+			}
+			var linters map[string]bool
+			if len(tc.Linters) != 0 {
+				linters = make(map[string]bool)
+				for _, l := range tc.Linters {
+					linters[l] = true
+				}
+			}
+			if !reflect.DeepEqual(result, linters) {
+				t.Fatalf("parseNolint expect %v got %v", linters, result)
+			}
+		})
+	}
+}