gobot.io/x/gobot@v1.16.0/utils_test.go (about)

     1  package gobot
     2  
     3  import (
     4  	"strings"
     5  	"testing"
     6  	"time"
     7  
     8  	"gobot.io/x/gobot/gobottest"
     9  )
    10  
    11  func TestEvery(t *testing.T) {
    12  	i := 0
    13  	begin := time.Now().UnixNano()
    14  	sem := make(chan int64, 1)
    15  	Every(2*time.Millisecond, func() {
    16  		i++
    17  		if i == 2 {
    18  			sem <- time.Now().UnixNano()
    19  		}
    20  	})
    21  	end := <-sem
    22  	if end-begin < 4000000 {
    23  		t.Error("Test should have taken at least 4 milliseconds")
    24  	}
    25  }
    26  
    27  func TestEveryWhenStopped(t *testing.T) {
    28  	sem := make(chan bool)
    29  
    30  	done := Every(50*time.Millisecond, func() {
    31  		sem <- true
    32  	})
    33  
    34  	select {
    35  	case <-sem:
    36  		done.Stop()
    37  	case <-time.After(60 * time.Millisecond):
    38  		t.Errorf("Every was not called")
    39  	}
    40  
    41  	select {
    42  	case <-time.After(60 * time.Millisecond):
    43  	case <-sem:
    44  		t.Error("Every should have stopped")
    45  	}
    46  }
    47  
    48  func TestAfter(t *testing.T) {
    49  	i := 0
    50  	sem := make(chan bool)
    51  
    52  	After(1*time.Millisecond, func() {
    53  		i++
    54  		sem <- true
    55  	})
    56  
    57  	select {
    58  	case <-sem:
    59  	case <-time.After(10 * time.Millisecond):
    60  		t.Errorf("After was not called")
    61  	}
    62  
    63  	gobottest.Assert(t, i, 1)
    64  }
    65  
    66  func TestFromScale(t *testing.T) {
    67  	gobottest.Assert(t, FromScale(5, 0, 10), 0.5)
    68  }
    69  
    70  func TestToScale(t *testing.T) {
    71  	gobottest.Assert(t, ToScale(500, 0, 10), 10.0)
    72  	gobottest.Assert(t, ToScale(-1, 0, 10), 0.0)
    73  	gobottest.Assert(t, ToScale(0.5, 0, 10), 5.0)
    74  }
    75  
    76  func TestRescale(t *testing.T) {
    77  	gobottest.Assert(t, Rescale(500, 0, 1000, 0, 10), 5.0)
    78  	gobottest.Assert(t, Rescale(-1.0, -1, 0, 490, 350), 490.0)
    79  }
    80  
    81  func TestRand(t *testing.T) {
    82  	a := Rand(10000)
    83  	b := Rand(10000)
    84  	if a == b {
    85  		t.Errorf("%v should not equal %v", a, b)
    86  	}
    87  }
    88  
    89  func TestDefaultName(t *testing.T) {
    90  	name := DefaultName("tester")
    91  	gobottest.Assert(t, strings.Contains(name, "tester"), true)
    92  }