1 files changed, 54 insertions, 0 deletions
diff --git a/src/cmd/link/internal/benchmark/bench_test.go b/src/cmd/link/internal/benchmark/bench_test.go
new file mode 100644
index 0000000..419dc55
--- /dev/null
+++ b/src/cmd/link/internal/benchmark/bench_test.go
@@ -0,0 +1,54 @@
+// Copyright 2020 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 benchmark
+
+import (
+	"testing"
+)
+
+func TestMakeBenchString(t *testing.T) {
+	tests := []struct {
+		have, want string
+	}{
+		{"foo", "BenchmarkFoo"},
+		{"  foo  ", "BenchmarkFoo"},
+		{"foo bar", "BenchmarkFooBar"},
+	}
+	for i, test := range tests {
+		if v := makeBenchString(test.have); test.want != v {
+			t.Errorf("test[%d] makeBenchString(%q) == %q, want %q", i, test.have, v, test.want)
+		}
+	}
+}
+
+func TestPProfFlag(t *testing.T) {
+	tests := []struct {
+		name string
+		want bool
+	}{
+		{"", false},
+		{"foo", true},
+	}
+	for i, test := range tests {
+		b := New(GC, test.name)
+		if v := b.shouldPProf(); test.want != v {
+			t.Errorf("test[%d] shouldPProf() == %v, want %v", i, v, test.want)
+		}
+	}
+}
+
+func TestPProfNames(t *testing.T) {
+	want := "foo_BenchmarkTest.cpuprof"
+	if v := makePProfFilename("foo", "test", "cpuprof"); v != want {
+		t.Errorf("makePProfFilename() == %q, want %q", v, want)
+	}
+}
+
+// Ensure that public APIs work with a nil Metrics object.
+func TestNilBenchmarkObject(t *testing.T) {
+	var b *Metrics
+	b.Start("TEST")
+	b.Report(nil)
+}