mirror of https://github.com/coder/coder.git
57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
package cryptorand_test
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import (
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"testing"
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"github.com/stretchr/testify/require"
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"github.com/coder/coder/v2/cryptorand"
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)
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func TestRandomElement(t *testing.T) {
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t.Parallel()
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t.Run("Empty", func(t *testing.T) {
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t.Parallel()
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s := []string{}
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v, err := cryptorand.Element(s)
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require.Error(t, err)
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require.ErrorContains(t, err, "slice must have at least one element")
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require.Empty(t, v)
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})
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t.Run("OK", func(t *testing.T) {
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t.Parallel()
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// Generate random slices of ints and strings
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var (
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ints = make([]int, 20)
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strings = make([]string, 20)
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)
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for i := range ints {
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v, err := cryptorand.Intn(1024)
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require.NoError(t, err, "generate random int for test slice")
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ints[i] = v
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}
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for i := range strings {
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v, err := cryptorand.String(10)
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require.NoError(t, err, "generate random string for test slice")
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strings[i] = v
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}
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// Get a random value from each 20 times.
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for i := 0; i < 20; i++ {
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iv, err := cryptorand.Element(ints)
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require.NoError(t, err, "unexpected error from Element(ints)")
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t.Logf("random int slice element: %v", iv)
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require.Contains(t, ints, iv)
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sv, err := cryptorand.Element(strings)
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require.NoError(t, err, "unexpected error from Element(strings)")
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t.Logf("random string slice element: %v", sv)
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require.Contains(t, strings, sv)
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}
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})
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}
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