Golang assert.NoError函数代码示例

// Ensure that a leader can be set and read.
func TestModLeaderSet(t *testing.T) {
	tests.RunServer(func(s *server.Server) {
		// Set leader.
		body, status, err := testSetLeader(s, "foo", "xxx", 10)
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "2")

		// Check that the leader is set.
		body, status, err = testGetLeader(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "xxx")

		// Delete leader.
		body, status, err = testDeleteLeader(s, "foo", "xxx")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "")

		// Check that the leader is removed.
		body, status, err = testGetLeader(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "")
	})
}

// Ensure that a lock succeeds when timeout=0 (nowait)
func TestModLockAcquireNoWait(t *testing.T) {
	tests.RunServer(func(s *server.Server) {
		c := make(chan bool)

		// Acquire lock with no waiting.
		go func() {
			body, status, err := testAcquireLockWithTimeout(s, "foo", "first", 10, 0)
			assert.NoError(t, err)
			assert.Equal(t, status, 200)
			assert.Equal(t, body, "2")
			c <- true
		}()
		<-c

		time.Sleep(1 * time.Second)

		// Check that we have the lock #1.
		body, status, err := testGetLockIndex(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "2")

		// Release lock #1.
		_, status, err = testReleaseLock(s, "foo", "2", "")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)

		// Check that we have no lock.
		body, status, err = testGetLockIndex(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
	})
}

// Ensure that a leader can be renewed.
func TestModLeaderRenew(t *testing.T) {
	tests.RunServer(func(s *server.Server) {
		// Set leader.
		body, status, err := testSetLeader(s, "foo", "xxx", 2)
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "2")

		time.Sleep(1 * time.Second)

		// Renew leader.
		body, status, err = testSetLeader(s, "foo", "xxx", 3)
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "2")

		time.Sleep(2 * time.Second)

		// Check that the leader is set.
		body, status, err = testGetLeader(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "xxx")
	})
}

// Create a full cluster, disconnect a peer, wait for autodemotion, wait for autopromotion.
func TestStandbyAutoPromote(t *testing.T) {
	t.Skip("functionality unimplemented")

	clusterSize := 10 // DefaultActiveSize + 1
	_, etcds, err := CreateCluster(clusterSize, &os.ProcAttr{Files: []*os.File{nil, os.Stdout, os.Stderr}}, false)
	if err != nil {
		t.Fatal("cannot create cluster")
	}
	defer func() {
		// Wrap this in a closure so that it picks up the updated version of
		// the "etcds" variable.
		DestroyCluster(etcds)
	}()

	c := etcd.NewClient(nil)
	c.SyncCluster()

	time.Sleep(1 * time.Second)

	// Verify that we have one standby.
	result, err := c.Get("_etcd/standbys", false, true)
	assert.NoError(t, err)
	assert.Equal(t, len(result.Node.Nodes), 1)

	// Reconfigure with a short promote delay (2 second).
	resp, _ := tests.Put("http://localhost:7001/v2/admin/config", "application/json", bytes.NewBufferString(`{"activeSize":9, "promoteDelay":2}`))
	if !assert.Equal(t, resp.StatusCode, 200) {
		t.FailNow()
	}

	// Remove peer.
	etcd := etcds[1]
	etcds = append(etcds[:1], etcds[2:]...)
	if err := etcd.Kill(); err != nil {
		panic(err.Error())
	}
	etcd.Release()

	// Wait for it to get dropped.
	time.Sleep(server.PeerActivityMonitorTimeout + (2 * time.Second))

	// Wait for the standby to be promoted.
	time.Sleep(server.ActiveMonitorTimeout + (2 * time.Second))

	// Verify that we have 9 peers.
	result, err = c.Get("_etcd/machines", true, true)
	assert.NoError(t, err)
	assert.Equal(t, len(result.Node.Nodes), 9)

	// Verify that node10 is one of those peers.
	result, err = c.Get("_etcd/machines/node10", false, false)
	assert.NoError(t, err)

	// Verify that there are no more standbys.
	result, err = c.Get("_etcd/standbys", false, true)
	assert.NoError(t, err)
	if assert.Equal(t, len(result.Node.Nodes), 1) {
		assert.Equal(t, result.Node.Nodes[0].Key, "/_etcd/standbys/node2")
	}
}

// Ensure that a lock can be acquired with a value and released by value.
func TestModLockAcquireAndReleaseByValue(t *testing.T) {
	tests.RunServer(func(s *server.Server) {
		// Acquire lock.
		body, status, err := testAcquireLock(s, "foo", "XXX", 10)
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "2")

		// Check that we have the lock.
		body, status, err = testGetLockValue(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "XXX")

		// Release lock.
		body, status, err = testReleaseLock(s, "foo", "", "XXX")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "")

		// Check that we released the lock.
		body, status, err = testGetLockValue(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "")
	})
}

// Create a full cluster, disconnect a peer, wait for removal, wait for standby join.
func TestStandbyAutoJoin(t *testing.T) {
	clusterSize := 5
	_, etcds, err := CreateCluster(clusterSize, &os.ProcAttr{Files: []*os.File{nil, os.Stdout, os.Stderr}}, false)
	if err != nil {
		t.Fatal("cannot create cluster")
	}
	defer func() {
		// Wrap this in a closure so that it picks up the updated version of
		// the "etcds" variable.
		DestroyCluster(etcds)
	}()

	c := etcd.NewClient(nil)
	c.SyncCluster()

	time.Sleep(1 * time.Second)

	// Verify that we have five machines.
	result, err := c.Get("_etcd/machines", false, true)
	assert.NoError(t, err)
	assert.Equal(t, len(result.Node.Nodes), 5)

	// Reconfigure with a short remove delay (2 second).
	resp, _ := tests.Put("http://localhost:7001/v2/admin/config", "application/json", bytes.NewBufferString(`{"activeSize":4, "removeDelay":2, "syncInterval":1}`))
	if !assert.Equal(t, resp.StatusCode, 200) {
		t.FailNow()
	}

	// Wait for a monitor cycle before checking for removal.
	time.Sleep(server.ActiveMonitorTimeout + (1 * time.Second))

	// Verify that we now have four peers.
	result, err = c.Get("_etcd/machines", false, true)
	assert.NoError(t, err)
	assert.Equal(t, len(result.Node.Nodes), 4)

	// Remove peer.
	etcd := etcds[1]
	etcds = append(etcds[:1], etcds[2:]...)
	if err := etcd.Kill(); err != nil {
		panic(err.Error())
	}
	etcd.Release()

	// Wait for it to get dropped.
	time.Sleep(server.PeerActivityMonitorTimeout + (1 * time.Second))

	// Wait for the standby to join.
	time.Sleep((1 * time.Second) + (1 * time.Second))

	// Verify that we have 4 peers.
	result, err = c.Get("_etcd/machines", true, true)
	assert.NoError(t, err)
	assert.Equal(t, len(result.Node.Nodes), 4)

	// Verify that node2 is not one of those peers.
	_, err = c.Get("_etcd/machines/node2", false, false)
	assert.Error(t, err)
}

func TestStandbyJoinMiss(t *testing.T) {
	clusterSize := 2
	_, etcds, err := CreateCluster(clusterSize, &os.ProcAttr{Files: []*os.File{nil, os.Stdout, os.Stderr}}, false)
	if err != nil {
		t.Fatal("cannot create cluster")
	}
	defer DestroyCluster(etcds)

	c := etcd.NewClient(nil)
	c.SyncCluster()

	time.Sleep(1 * time.Second)

	// Verify that we have two machines.
	result, err := c.Get("_etcd/machines", false, true)
	assert.NoError(t, err)
	assert.Equal(t, len(result.Node.Nodes), clusterSize)

	resp, _ := tests.Put("http://localhost:7001/v2/admin/config", "application/json", bytes.NewBufferString(`{"removeDelay":4, "syncInterval":4}`))
	if !assert.Equal(t, resp.StatusCode, 200) {
		t.FailNow()
	}
	time.Sleep(time.Second)

	resp, _ = tests.Delete("http://localhost:7001/v2/admin/machines/node2", "application/json", nil)
	if !assert.Equal(t, resp.StatusCode, 200) {
		t.FailNow()
	}

	// Wait for a monitor cycle before checking for removal.
	time.Sleep(server.ActiveMonitorTimeout + (1 * time.Second))

	// Verify that we now have one peer.
	result, err = c.Get("_etcd/machines", false, true)
	assert.NoError(t, err)
	assert.Equal(t, len(result.Node.Nodes), 1)

	// Simulate the join failure
	_, err = server.NewClient(nil).AddMachine("http://localhost:7001",
		&server.JoinCommand{
			MinVersion: store.MinVersion(),
			MaxVersion: store.MaxVersion(),
			Name:       "node2",
			RaftURL:    "http://127.0.0.1:7002",
			EtcdURL:    "http://127.0.0.1:4002",
		})
	assert.NoError(t, err)

	time.Sleep(6 * time.Second)

	go tests.Delete("http://localhost:7001/v2/admin/machines/node2", "application/json", nil)

	time.Sleep(time.Second)
	result, err = c.Get("_etcd/machines", false, true)
	assert.NoError(t, err)
	assert.Equal(t, len(result.Node.Nodes), 1)
}

// Ensure that the cluster configuration can be reloaded.
func TestClusterConfigReload(t *testing.T) {
	procAttr := &os.ProcAttr{Files: []*os.File{nil, os.Stdout, os.Stderr}}
	argGroup, etcds, err := CreateCluster(3, procAttr, false)
	assert.NoError(t, err)
	defer DestroyCluster(etcds)

	resp, _ := tests.Put("http://localhost:7001/v2/admin/config", "application/json", bytes.NewBufferString(`{"activeSize":3, "removeDelay":60}`))
	assert.Equal(t, resp.StatusCode, 200)

	time.Sleep(1 * time.Second)

	resp, _ = tests.Get("http://localhost:7002/v2/admin/config")
	body := tests.ReadBodyJSON(resp)
	assert.Equal(t, resp.StatusCode, 200)
	assert.Equal(t, body["activeSize"], 3)
	assert.Equal(t, body["removeDelay"], 60)

	// kill all
	DestroyCluster(etcds)

	for i := 0; i < 3; i++ {
		etcds[i], err = os.StartProcess(EtcdBinPath, argGroup[i], procAttr)
	}

	time.Sleep(1 * time.Second)

	resp, _ = tests.Get("http://localhost:7002/v2/admin/config")
	body = tests.ReadBodyJSON(resp)
	assert.Equal(t, resp.StatusCode, 200)
	assert.Equal(t, body["activeSize"], 3)
	assert.Equal(t, body["removeDelay"], 60)
}

// Ensure that a lock honours the timeout=0 (nowait) option when lock is already held
func TestModLockAcquireNoWaitWhileLocked(t *testing.T) {
	tests.RunServer(func(s *server.Server) {
		c := make(chan bool)

		// Acquire lock #1.
		go func() {
			body, status, err := testAcquireLock(s, "foo", "first", 10)
			assert.NoError(t, err)
			assert.Equal(t, status, 200)
			assert.Equal(t, body, "2")
			c <- true
		}()
		<-c

		// Attempt to acquire lock #2; fail if no lock immediately acquired
		waiting := true
		go func() {
			c <- true
			_, status, err := testAcquireLockWithTimeout(s, "foo", "second", 10, 0)
			assert.NoError(t, err)
			assert.Equal(t, status, 500)
			waiting = false
		}()
		<-c

		time.Sleep(1 * time.Second)

		// Check that we have the lock #1.
		body, status, err := testGetLockIndex(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "2")

		// Check that we are not still waiting for lock #2.
		assert.Equal(t, waiting, false)

		// Release lock #1.
		_, status, err = testReleaseLock(s, "foo", "2", "")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)

		// Check that we have no lock.
		body, status, err = testGetLockIndex(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
	})
}

// Ensure that a lock can be acquired and another process is blocked until released.
func TestModLockBlockUntilAcquire(t *testing.T) {
	tests.RunServer(func(s *server.Server) {
		c := make(chan bool)

		// Acquire lock #1.
		go func() {
			body, status, err := testAcquireLock(s, "foo", "", 10)
			assert.NoError(t, err)
			assert.Equal(t, status, 200)
			assert.Equal(t, body, "2")
			c <- true
		}()
		<-c

		// Acquire lock #2.
		waiting := true
		go func() {
			c <- true
			body, status, err := testAcquireLock(s, "foo", "", 10)
			assert.NoError(t, err)
			assert.Equal(t, status, 200)
			assert.Equal(t, body, "4")
			waiting = false
		}()
		<-c

		time.Sleep(1 * time.Second)

		// Check that we have the lock #1.
		body, status, err := testGetLockIndex(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "2")

		// Check that we are still waiting for lock #2.
		assert.Equal(t, waiting, true)

		// Release lock #1.
		_, status, err = testReleaseLock(s, "foo", "2", "")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)

		// Check that we have lock #2.
		body, status, err = testGetLockIndex(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "4")

		// Release lock #2.
		_, status, err = testReleaseLock(s, "foo", "4", "")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)

		// Check that we have no lock.
		body, status, err = testGetLockIndex(s, "foo")
		assert.NoError(t, err)
		assert.Equal(t, status, 200)
		assert.Equal(t, body, "")
	})
}

func TestConfigDeprecatedNameFlag(t *testing.T) {
	_, stderr := capture(func() {
		c := New()
		err := c.LoadFlags([]string{"-n", "test-name"})
		assert.NoError(t, err)
		assert.Equal(t, c.Name, "test-name", "")
	})
	assert.Equal(t, stderr, "[deprecated] use -name, not -n\n", "")
}

func TestConfigDeprecatedPeersFileFlag(t *testing.T) {
	_, stderr := capture(func() {
		c := New()
		err := c.LoadFlags([]string{"-CF", "/tmp/machines"})
		assert.NoError(t, err)
		assert.Equal(t, c.PeersFile, "/tmp/machines", "")
	})
	assert.Equal(t, stderr, "[deprecated] use -peers-file, not -CF\n", "")
}

func TestConfigDeprecatedMaxRetryAttemptsFlag(t *testing.T) {
	_, stderr := capture(func() {
		c := New()
		err := c.LoadFlags([]string{"-r", "10"})
		assert.NoError(t, err)
		assert.Equal(t, c.MaxRetryAttempts, 10, "")
	})
	assert.Equal(t, stderr, "[deprecated] use -max-retry-attempts, not -r\n", "")
}

func TestConfigDeprecatedCertFileFlag(t *testing.T) {
	_, stderr := capture(func() {
		c := New()
		err := c.LoadFlags([]string{"-clientCert", "/tmp/file.cert"})
		assert.NoError(t, err)
		assert.Equal(t, c.CertFile, "/tmp/file.cert", "")
	})
	assert.Equal(t, stderr, "[deprecated] use -cert-file, not -clientCert\n", "")
}

func TestConfigDeprecatedPeersFlag(t *testing.T) {
	_, stderr := capture(func() {
		c := New()
		err := c.LoadFlags([]string{"-C", "coreos.com:4001,coreos.com:4002"})
		assert.NoError(t, err)
		assert.Equal(t, c.Peers, []string{"coreos.com:4001", "coreos.com:4002"}, "")
	})
	assert.Equal(t, stderr, "[deprecated] use -peers, not -C\n", "")
}