1 files changed, 63 insertions, 0 deletions
diff --git a/go/tools/bzltestutil/wrap_test.go b/go/tools/bzltestutil/wrap_test.go
new file mode 100644
index 00000000..8444b7a5
--- /dev/null
+++ b/go/tools/bzltestutil/wrap_test.go
@@ -0,0 +1,63 @@
+// Copyright 2020 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 bzltestutil
+
+import (
+	"fmt"
+	"os"
+	"testing"
+)
+
+func TestShouldWrap(t *testing.T) {
+	var tests = []struct {
+		envs       map[string]string
+		shouldWrap bool
+	}{
+		{
+			envs: map[string]string{
+				"GO_TEST_WRAP":    "0",
+				"XML_OUTPUT_FILE": "",
+			},
+			shouldWrap: false,
+		}, {
+			envs: map[string]string{
+				"GO_TEST_WRAP":    "1",
+				"XML_OUTPUT_FILE": "",
+			},
+			shouldWrap: true,
+		}, {
+			envs: map[string]string{
+				"GO_TEST_WRAP":    "",
+				"XML_OUTPUT_FILE": "path",
+			},
+			shouldWrap: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(fmt.Sprintf("%v", tt.envs), func(t *testing.T) {
+			for k, v := range tt.envs {
+				if v == "" {
+					os.Unsetenv(k)
+				} else {
+					os.Setenv(k, v)
+				}
+			}
+			got := ShouldWrap()
+			if tt.shouldWrap != got {
+				t.Errorf("shouldWrap returned %t, expected %t", got, tt.shouldWrap)
+			}
+		})
+	}
+}