Golang B.Errorf方法代码示例

func benchMatch(b *testing.B, re regexper, dos bool) {
	patterns := []string{`Hello World!`, `Hello Friend!`, `Hello 友達!`}
	for _, pat := range patterns {
		var rv bool
		if dos {
			rv = re.MatchString(pat)
		} else {
			rv = re.Match([]byte(pat))
		}
		if !rv {
			b.Errorf("Expected to match, failed")
			return
		}
	}

	patterns = []string{`Goodbye World!`, `Hell no!`, `HelloWorld!`}
	for _, pat := range patterns {
		var rv bool
		if dos {
			rv = re.MatchString(pat)
		} else {
			rv = re.Match([]byte(pat))
		}

		if rv {
			b.Errorf("Expected to NOT match, matched")
			return
		}
	}
}

func BenchmarkContention(b *testing.B) {
	b.StopTimer()

	var procs = runtime.NumCPU()
	var origProcs = runtime.GOMAXPROCS(procs)

	var db = NewLogeDB(NewMemStore())
	db.CreateType(NewTypeDef("counters", 1, &TestCounter{}))

	db.Transact(func(t *Transaction) {
		t.Set("counters", "contended", &TestCounter{Value: 0})
	}, 0)

	b.StartTimer()

	var group sync.WaitGroup
	for i := 0; i < procs; i++ {
		group.Add(1)
		go LoopIncrement(db, "contended", &group, b.N)
	}
	group.Wait()

	b.StopTimer()

	db.Transact(func(t *Transaction) {
		var target = b.N * procs
		var counter = t.Read("counters", "contended").(*TestCounter)
		if counter.Value != uint32(target) {
			b.Errorf("Wrong count for counter: %d / %d",
				counter.Value, target)
		}
	}, 0)

	runtime.GOMAXPROCS(origProcs)
}

func Benchmark__PubSubTwoConns(b *testing.B) {
	b.StopTimer()
	s := runBenchServer()
	c := createClientConn(b, "localhost", PERF_PORT)
	doDefaultConnect(b, c)
	bw := bufio.NewWriterSize(c, defaultSendBufSize)

	c2 := createClientConn(b, "localhost", PERF_PORT)
	doDefaultConnect(b, c2)
	sendProto(b, c2, "SUB foo 1\r\n")

	sendOp := []byte(fmt.Sprintf("PUB foo 2\r\nok\r\n"))
	ch := make(chan bool)

	expected := len("MSG foo 1 2\r\nok\r\n") * b.N
	go drainConnection(b, c2, ch, expected)

	b.StartTimer()
	for i := 0; i < b.N; i++ {
		bw.Write(sendOp)
	}
	err := bw.Flush()
	if err != nil {
		b.Errorf("Received error on FLUSH write: %v\n", err)
	}

	// Wait for connection to be drained
	<-ch

	b.StopTimer()
	c.Close()
	c2.Close()
	s.Shutdown()
}

// same as above, but representing the most simple possible request
// and handler. Notably: the handler does not call rw.Header().
func BenchmarkServerFakeConnWithKeepAliveLite(b *testing.B) {

	req := []byte(strings.Replace(`GET / HTTP/1.1
Host: golang.org

`, "\n", "\r\n", -1))
	res := []byte("Hello world!\n")

	conn := &rwTestConn{
		Reader: &repeatReader{content: req, count: b.N},
		Writer: ioutil.Discard,
		closec: make(chan bool, 1),
	}
	handled := 0
	handler := HandlerFunc(func(rw ResponseWriter, r *Request) {
		handled++
		rw.Write(res)
	})
	ln := &oneConnListener{conn: conn}
	go Serve(ln, handler)
	<-conn.closec
	if b.N != handled {
		b.Errorf("b.N=%d but handled %d", b.N, handled)
	}
}

func BenchmarkLanguage(b *testing.B) {
	b.StopTimer()
	tst := []string{
		"language.go",
		"testdata/main.go",
	}

	var d0 []string
	for _, s := range tst {
		if d, err := ioutil.ReadFile(s); err != nil {
			b.Errorf("Couldn't load file %s: %s", s, err)
		} else {
			d0 = append(d0, string(d))
		}
	}

	b.StartTimer()
	for i := 0; i < b.N; i++ {
		for j := range d0 {
			lp, err := NewLanguageParser("testdata/Go.tmLanguage", d0[j])
			if err != nil {
				b.Fatal(err)
				return
			}
			lp.Parse()
		}
	}
	fmt.Println(util.Prof)
}

// BenchmarkSigVerify benchmarks how long it takes the secp256k1 curve to
// verify signatures.
func BenchmarkSigVerify(b *testing.B) {
	b.StopTimer()
	// Randomly generated keypair.
	// Private key: 9e0699c91ca1e3b7e3c9ba71eb71c89890872be97576010fe593fbf3fd57e66d
	pubKey := PublicKey{
		Curve: S256(),
		X:     fromHex("d2e670a19c6d753d1a6d8b20bd045df8a08fb162cf508956c31268c6d81ffdab"),
		Y:     fromHex("ab65528eefbb8057aa85d597258a3fbd481a24633bc9b47a9aa045c91371de52"),
	}

	// Double sha256 of []byte{0x01, 0x02, 0x03, 0x04}
	msgHash := fromHex("8de472e2399610baaa7f84840547cd409434e31f5d3bd71e4d947f283874f9c0")
	sig := Signature{
		R: fromHex("fef45d2892953aa5bbcdb057b5e98b208f1617a7498af7eb765574e29b5d9c2c"),
		S: fromHex("d47563f52aac6b04b55de236b7c515eb9311757db01e02cff079c3ca6efb063f"),
	}

	if !sig.Verify(msgHash.Bytes(), &pubKey) {
		b.Errorf("Signature failed to verify")
		return
	}
	b.StartTimer()

	for i := 0; i < b.N; i++ {
		sig.Verify(msgHash.Bytes(), &pubKey)
	}
}

func benchmarkStoreRead(b *testing.B, store data.Store) {
	var n = 1000
	benchmarkStoreInsert(b, store, n)
	b.ResetTimer()
	var users = store.Collection("users")
	for k := 0; k < b.N; k++ {
		var i = rand.Intn(n - 1)
		var name = fmt.Sprintf("user%d", i+1)
		var email = fmt.Sprintf("%[email protected]", name)
		var usr User
		var err = users.Find(q.Or{
			q.M{"id": name},
			q.M{"name": name},
			q.M{"email": name},
		}).One(&usr)
		if err != nil {
			b.Errorf("find one failed with %v", err)
			b.FailNow()
		}
		err = users.Find(q.Or{
			q.M{"id": email},
			q.M{"name": email},
			q.M{"email": email},
		}).One(&usr)
		if err != nil {
			b.Errorf("find one failed with %v", err)
			b.FailNow()
		}
	}
}

func BenchmarkRoundtripTxt(b *testing.B) {
	b.StopTimer()
	sample, min, max := initRoundtripBenchmarks()
	sampleString := string(sample)
	b.ReportAllocs()
	tb := (*TB)(b)
	db := tb.checkDB(sql.Open("mysql", dsn))
	defer db.Close()
	b.StartTimer()
	var result string
	for i := 0; i < b.N; i++ {
		length := min + i
		if length > max {
			length = max
		}
		test := sampleString[0:length]
		rows := tb.checkRows(db.Query(`SELECT "` + test + `"`))
		if !rows.Next() {
			rows.Close()
			b.Fatalf("crashed")
		}
		err := rows.Scan(&result)
		if err != nil {
			rows.Close()
			b.Fatalf("crashed")
		}
		if result != test {
			rows.Close()
			b.Errorf("mismatch")
		}
		rows.Close()
	}
}

func BenchmarkRoundtripBin(b *testing.B) {
	b.StopTimer()
	sample, min, max := initRoundtripBenchmarks()
	b.ReportAllocs()
	tb := (*TB)(b)
	db := tb.checkDB(sql.Open("mysql", dsn))
	defer db.Close()
	stmt := tb.checkStmt(db.Prepare("SELECT ?"))
	defer stmt.Close()
	b.StartTimer()
	var result sql.RawBytes
	for i := 0; i < b.N; i++ {
		length := min + i
		if length > max {
			length = max
		}
		test := sample[0:length]
		rows := tb.checkRows(stmt.Query(test))
		if !rows.Next() {
			rows.Close()
			b.Fatalf("crashed")
		}
		err := rows.Scan(&result)
		if err != nil {
			rows.Close()
			b.Fatalf("crashed")
		}
		if !bytes.Equal(result, test) {
			rows.Close()
			b.Errorf("mismatch")
		}
		rows.Close()
	}
}

func benchmarkScanner(b *testing.B, scanner osm.Scanner) (int, int, int) {
	var (
		nodes     int
		ways      int
		relations int
	)

	for scanner.Scan() {
		e := scanner.Element()
		if e.Node != nil {
			nodes++
		}

		if e.Way != nil {
			ways++
		}

		if e.Relation != nil {
			relations++
		}
	}

	if err := scanner.Err(); err != nil {
		b.Errorf("scanner returned error: %v", err)
	}

	return nodes, ways, relations
}

func BenchmarkRoundTrip(b *testing.B) {
	r1, s1 := Pipe()
	r2, s2 := Pipe()
	go func() {
		var m BenchMessage
		for {
			if err := r1.Receive(&m); err != nil {
				b.Fatalf("Error receiving BenchMessage: %s", err)
			}
			if err := s2.Send(&m); err != nil {
				b.Fatalf("Error sending BenchMessage: %s", err)
			}
		}
	}()

	var sm BenchMessage
	var rm BenchMessage
	for i := 0; i < b.N; i++ {
		sm.I = i
		if err := s1.Send(&sm); err != nil {
			b.Fatalf("Error sending bench message: %s", err)
		}
		if err := r2.Receive(&rm); err != nil {
			b.Fatalf("Error receiving bench message: %s", err)
		}
		if rm.I != sm.I {
			b.Errorf("Wrong int received: %d, expecting: %d", rm.I, sm.I)
		}
	}
}

func BenchmarkClientFutureParallel(b *testing.B) {
	var err error

	client, err := Connect(server, opts)
	if err != nil {
		b.Errorf("No connection available")
	}

	_, err = client.Replace(spaceNo, tuple1)
	if err != nil {
		b.Errorf("No connection available")
	}

	b.RunParallel(func(pb *testing.PB) {
		exit := false
		for !exit {
			var fs [N]*Future
			var j int
			for j = 0; j < N && pb.Next(); j++ {
				fs[j] = client.SelectAsync(spaceNo, indexNo, offset, limit, iterator, key)
			}
			exit = j < N
			for j > 0 {
				j--
				_, err = fs[j].Get()
				if err != nil {
					b.Error(err)
				}
			}
		}
	})
}

func BenchmarkBatch200RandomWritesParallel10(b *testing.B) {

	var term Term
	var data []map[string]interface{}

	b.SetParallelism(10)

	b.RunParallel(func(pb *testing.PB) {

		for pb.Next() {
			for is := 0; is < 200; is++ {
				r := rand.New(rand.NewSource(time.Now().UnixNano()))
				cid := map[string]interface{}{
					"customer_id": strconv.FormatInt(r.Int63(), 10),
				}
				data = append(data, cid)
			}

			// Insert the new item into the database
			term = DB("benchmarks").Table("benchmarks").Insert(data)

			// Insert the new item into the database
			_, err := term.RunWrite(session, RunOpts{
				MinBatchRows: 200,
				MaxBatchRows: 200,
			})
			if err != nil {
				b.Errorf("insert failed [%s] ", err)
			}
		}
	})

}

func BenchmarkSequentialSoftWritesParallel10(b *testing.B) {

	var mu sync.Mutex
	si := 0

	// p*GOMAXPROCS
	b.SetParallelism(10)

	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			mu.Lock()
			si++
			mu.Unlock()

			data := map[string]interface{}{
				"customer_id": si,
			}

			opts := InsertOpts{Durability: "soft"}

			// Insert the new item into the database
			_, err := Table("benchmarks").Insert(data, opts).RunWrite(session)
			if err != nil {
				b.Errorf("insert failed [%s] ", err)
				return
			}
		}
	})

}

func Benchmark10kGlobal(b *testing.B) {
	var remote []scanner.File
	for i := 0; i < 10000; i++ {
		remote = append(remote, scanner.File{Name: fmt.Sprintf("file%d", i), Version: 1000})
	}

	m := NewSet()
	m.Replace(cid.LocalID+1, remote)

	var local []scanner.File
	for i := 0; i < 2000; i++ {
		local = append(local, scanner.File{Name: fmt.Sprintf("file%d", i), Version: 1000})
	}
	for i := 2000; i < 10000; i++ {
		local = append(local, scanner.File{Name: fmt.Sprintf("file%d", i), Version: 980})
	}

	m.ReplaceWithDelete(cid.LocalID, local)

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		fs := m.Global()
		if l := len(fs); l != 10000 {
			b.Errorf("wrong length %d != 10k", l)
		}
	}
}