1 files changed, 34 insertions, 0 deletions
diff --git a/src/internal/godebug/godebug_test.go b/src/internal/godebug/godebug_test.go
new file mode 100644
index 0000000..41b9117
--- /dev/null
+++ b/src/internal/godebug/godebug_test.go
@@ -0,0 +1,34 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package godebug
+
+import "testing"
+
+func TestGet(t *testing.T) {
+	tests := []struct {
+		godebug string
+		key     string
+		want    string
+	}{
+		{"", "", ""},
+		{"", "foo", ""},
+		{"foo=bar", "foo", "bar"},
+		{"foo=bar,after=x", "foo", "bar"},
+		{"before=x,foo=bar,after=x", "foo", "bar"},
+		{"before=x,foo=bar", "foo", "bar"},
+		{",,,foo=bar,,,", "foo", "bar"},
+		{"foodecoy=wrong,foo=bar", "foo", "bar"},
+		{"foo=", "foo", ""},
+		{"foo", "foo", ""},
+		{",foo", "foo", ""},
+		{"foo=bar,baz", "loooooooong", ""},
+	}
+	for _, tt := range tests {
+		got := get(tt.godebug, tt.key)
+		if got != tt.want {
+			t.Errorf("get(%q, %q) = %q; want %q", tt.godebug, tt.key, got, tt.want)
+		}
+	}
+}