tcp_test.go

Documentation: k8s.io/kubernetes/pkg/probe/tcp

     1  /*
     2  Copyright 2015 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package tcp
    18  
    19  import (
    20  	"net"
    21  	"net/http"
    22  	"net/http/httptest"
    23  	"strconv"
    24  	"testing"
    25  	"time"
    26  
    27  	"k8s.io/kubernetes/pkg/probe"
    28  )
    29  
    30  func TestTcpHealthChecker(t *testing.T) {
    31  	// Setup a test server that responds to probing correctly
    32  	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    33  		w.WriteHeader(http.StatusOK)
    34  	}))
    35  	defer server.Close()
    36  	tHost, tPortStr, err := net.SplitHostPort(server.Listener.Addr().String())
    37  	if err != nil {
    38  		t.Errorf("unexpected error: %v", err)
    39  	}
    40  	tPort, err := strconv.Atoi(tPortStr)
    41  	if err != nil {
    42  		t.Errorf("unexpected error: %v", err)
    43  	}
    44  
    45  	tests := []struct {
    46  		host string
    47  		port int
    48  
    49  		expectedStatus probe.Result
    50  		expectedError  error
    51  	}{
    52  		// A connection is made and probing would succeed
    53  		{tHost, tPort, probe.Success, nil},
    54  		// No connection can be made and probing would fail
    55  		{tHost, -1, probe.Failure, nil},
    56  	}
    57  
    58  	prober := New()
    59  	for i, tt := range tests {
    60  		status, _, err := prober.Probe(tt.host, tt.port, 1*time.Second)
    61  		if status != tt.expectedStatus {
    62  			t.Errorf("#%d: expected status=%v, get=%v", i, tt.expectedStatus, status)
    63  		}
    64  		if err != tt.expectedError {
    65  			t.Errorf("#%d: expected error=%v, get=%v", i, tt.expectedError, err)
    66  		}
    67  	}
    68  }
    69
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