github.com/fafucoder/cilium@v1.6.11/pkg/safetime/safetime_test.go (about)

     1  // Copyright 2018 Authors of Cilium
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  // +build !privileged_tests
    16  
    17  package safetime
    18  
    19  import (
    20  	"bytes"
    21  	"fmt"
    22  	"strings"
    23  	"testing"
    24  	"time"
    25  
    26  	log "github.com/sirupsen/logrus"
    27  	. "gopkg.in/check.v1"
    28  )
    29  
    30  // Hook up gocheck into the "go test" runner.
    31  func Test(t *testing.T) {
    32  	TestingT(t)
    33  }
    34  
    35  type SafetimeSuite struct {
    36  	out    *bytes.Buffer // stores log output
    37  	logger *log.Entry
    38  }
    39  
    40  var _ = Suite(&SafetimeSuite{})
    41  
    42  func (s *SafetimeSuite) SetUpTest(c *C) {
    43  	s.out = &bytes.Buffer{}
    44  	logger := log.New()
    45  	logger.Out = s.out
    46  	s.logger = log.NewEntry(logger)
    47  }
    48  
    49  func (s *SafetimeSuite) TestNegativeDuration(c *C) {
    50  	future := time.Now().Add(time.Second)
    51  	d, ok := TimeSinceSafe(future, s.logger)
    52  
    53  	c.Assert(ok, Equals, false)
    54  	c.Assert(d, Equals, time.Duration(0))
    55  	fmt.Println(s.out.String())
    56  	c.Assert(strings.Contains(s.out.String(), "BUG: negative duration"), Equals, true)
    57  }
    58  
    59  func (s *SafetimeSuite) TestNonNegativeDuration(c *C) {
    60  	// To prevent the test case from being flaky on machines with invalid
    61  	// CLOCK_MONOTONIC:
    62  	past := time.Now().Add(-10 * time.Second)
    63  	d, ok := TimeSinceSafe(past, s.logger)
    64  
    65  	c.Assert(ok, Equals, true)
    66  	c.Assert(d > time.Duration(0), Equals, true)
    67  	c.Assert(len(s.out.String()) == 0, Equals, true)
    68  }