mirror of https://github.com/coder/coder.git
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
package cryptorand_test
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import (
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"crypto/rand"
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"io"
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"testing"
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"testing/iotest"
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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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// TestRandError checks that the code handles errors when reading from
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// the rand.Reader.
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//
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// This test replaces the global rand.Reader, so cannot be parallelized
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//
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//nolint:paralleltest
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func TestRandError(t *testing.T) {
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origReader := rand.Reader
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t.Cleanup(func() {
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rand.Reader = origReader
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})
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rand.Reader = iotest.ErrReader(io.ErrShortBuffer)
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t.Run("Int63", func(t *testing.T) {
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_, err := cryptorand.Int63()
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require.ErrorIs(t, err, io.ErrShortBuffer, "expected Int63 error")
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})
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t.Run("Intn_32bit", func(t *testing.T) {
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_, err := cryptorand.Intn(100)
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require.ErrorIs(t, err, io.ErrShortBuffer, "expected Intn error")
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})
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t.Run("Intn_64bit", func(t *testing.T) {
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_, err := cryptorand.Intn(int(1 << 35))
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require.ErrorIs(t, err, io.ErrShortBuffer, "expected Intn error")
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})
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t.Run("Float64", func(t *testing.T) {
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_, err := cryptorand.Float64()
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require.ErrorIs(t, err, io.ErrShortBuffer, "expected Float64 error")
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})
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t.Run("StringCharset", func(t *testing.T) {
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_, err := cryptorand.HexString(10)
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require.ErrorIs(t, err, io.ErrShortBuffer, "expected HexString error")
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})
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}
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