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net_test.go
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117 lines (100 loc) · 3.53 KB
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/*
* Copyright 2018 The CovenantSQL Authors.
*
* 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 utils
import (
"context"
"fmt"
"net"
"testing"
"time"
. "github.com/smartystreets/goconvey/convey"
)
func TestGetRandomPorts(t *testing.T) {
Convey("get 1 port", t, func() {
ports, err := GetRandomPorts("127.0.0.1", 1, 10000, 1)
So(ports, ShouldHaveLength, 1)
So(err, ShouldBeNil)
})
// make one unusable port here
net.Listen("tcp", "127.0.0.1:2001")
Convey("get too many ports", t, func() {
ports, err := GetRandomPorts("127.0.0.1", 2000, 2010, 100)
So(len(ports), ShouldBeBetween, 0, 12)
So(err, ShouldEqual, ErrNotEnoughPorts)
})
Convey("port range error", t, func() {
ports, err := GetRandomPorts("127.0.0.1", 3000, 2010, 1)
So(ports, ShouldBeEmpty)
So(err, ShouldEqual, ErrNotEnoughPorts)
})
Convey("port range start 0", t, func() {
ports, err := GetRandomPorts("127.0.0.1", 0, 65535, 1)
So(ports, ShouldHaveLength, 1)
So(err, ShouldBeNil)
})
Convey("port range error", t, func() {
ports, _ := GetRandomPorts("127.0.0.1", 0, 65535, 0)
So(ports, ShouldBeEmpty)
})
Convey("previously allocated should be unavailable", t, func() {
ports, err := GetRandomPorts("127.0.0.1", 1, 10000, 1)
So(ports, ShouldHaveLength, 1)
So(err, ShouldBeNil)
lastAllocated := ports[0]
ports, err = GetRandomPorts("127.0.0.1", lastAllocated, lastAllocated, 1)
So(err, ShouldNotBeNil)
// any address should be banned to allocate too
ports, err = GetRandomPorts("0.0.0.0", lastAllocated, lastAllocated, 1)
So(err, ShouldNotBeNil)
// but another bind address should be available, should be use 127.0.0.2, but mac does not support 127.0.0.2
ports, err = GetRandomPorts("", lastAllocated, lastAllocated, 1)
So(err, ShouldBeNil)
So(ports, ShouldHaveLength, 1)
So(ports[0], ShouldEqual, lastAllocated)
})
}
func TestWaitForPorts(t *testing.T) {
Convey("test wait for ports", t, func() {
ports, err := GetRandomPorts("127.0.0.1", 1, 10000, 1)
So(ports, ShouldHaveLength, 1)
So(err, ShouldBeNil)
err = WaitForPorts(context.Background(), "127.0.0.1", ports, time.Millisecond*100)
So(err, ShouldBeNil)
ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*300)
defer cancel()
err = WaitToConnect(ctx, "127.0.0.1", ports, time.Millisecond*100)
So(err, ShouldNotBeNil)
// listen
ln, err := net.Listen("tcp", net.JoinHostPort("127.0.0.1", fmt.Sprint(ports[0])))
So(ln, ShouldNotBeNil)
So(err, ShouldBeNil)
defer ln.Close()
err = WaitToConnect(context.Background(), "127.0.0.1", ports, time.Millisecond*100)
So(err, ShouldBeNil)
ctx, cancel = context.WithTimeout(context.Background(), time.Millisecond*300)
defer cancel()
err = WaitForPorts(ctx, "127.0.0.1", ports, time.Millisecond*100)
So(err, ShouldNotBeNil)
go func() {
time.Sleep(time.Millisecond * 100)
ln.Close()
}()
ctx, cancel = context.WithTimeout(context.Background(), time.Millisecond*500)
defer cancel()
err = WaitForPorts(ctx, "127.0.0.1", ports, time.Millisecond*100)
So(err, ShouldBeNil)
})
}