go.mway.dev/x@v0.0.0-20240520034138-950aede9a3fb/sampling/gate_test.go (about)

     1  // Copyright (c) 2022 Matt Way
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to
     5  // deal in the Software without restriction, including without limitation the
     6  // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
     7  // sell copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    18  // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
    19  // IN THE THE SOFTWARE.
    20  
    21  package sampling_test
    22  
    23  import (
    24  	"testing"
    25  
    26  	"github.com/stretchr/testify/require"
    27  	"go.mway.dev/x/sampling"
    28  )
    29  
    30  func TestGate_On_Try(t *testing.T) {
    31  	var heads int
    32  	for i := 0; i < 1_000_000; i++ {
    33  		if sampling.On.Try() {
    34  			heads++
    35  		}
    36  	}
    37  
    38  	require.Equal(t, 1_000_000, heads)
    39  }
    40  
    41  func TestGate_Off_Try(t *testing.T) {
    42  	var heads int
    43  	for i := 0; i < 1_000_000; i++ {
    44  		if sampling.Off.Try() {
    45  			heads++
    46  		}
    47  	}
    48  
    49  	require.Equal(t, 0, heads)
    50  }
    51  
    52  func TestGate_Coin_Try(t *testing.T) {
    53  	var heads int
    54  	for i := 0; i < 1_000_000; i++ {
    55  		if sampling.Coin.Try() {
    56  			heads++
    57  		}
    58  	}
    59  
    60  	require.InDelta(t, 500_000, heads, 100_000)
    61  }