diff options
Diffstat (limited to 'src/log/log_test.go')
| -rw-r--r-- | src/log/log_test.go | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/log/log_test.go b/src/log/log_test.go index 5be8e82258..938ed42357 100644 --- a/src/log/log_test.go +++ b/src/log/log_test.go @@ -9,6 +9,7 @@ package log import ( "bytes" "fmt" + "io" "os" "regexp" "strings" @@ -20,7 +21,7 @@ const ( Rdate = `[0-9][0-9][0-9][0-9]/[0-9][0-9]/[0-9][0-9]` Rtime = `[0-9][0-9]:[0-9][0-9]:[0-9][0-9]` Rmicroseconds = `\.[0-9][0-9][0-9][0-9][0-9][0-9]` - Rline = `(60|62):` // must update if the calls to l.Printf / l.Print below move + Rline = `(61|63):` // must update if the calls to l.Printf / l.Print below move Rlongfile = `.*/[A-Za-z0-9_\-]+\.go:` + Rline Rshortfile = `[A-Za-z0-9_\-]+\.go:` + Rline ) @@ -179,6 +180,17 @@ func TestEmptyPrintCreatesLine(t *testing.T) { } } +func TestDiscard(t *testing.T) { + l := New(io.Discard, "", 0) + s := strings.Repeat("a", 102400) + c := testing.AllocsPerRun(100, func() { l.Printf("%s", s) }) + // One allocation for slice passed to Printf, + // but none for formatting of long string. + if c > 1 { + t.Errorf("got %v allocs, want at most 1", c) + } +} + func BenchmarkItoa(b *testing.B) { dst := make([]byte, 0, 64) for i := 0; i < b.N; i++ { |