mirror of https://github.com/hashicorp/consul
33 lines
771 B
Go
33 lines
771 B
Go
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package file
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"github.com/stretchr/testify/require"
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)
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// This doesn't really test the "atomic" part of this function. It really
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// tests that it just writes the file properly. I would love to test this
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// better but I'm not sure how. -mitchellh
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func TestWriteAtomic(t *testing.T) {
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require := require.New(t)
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td, err := ioutil.TempDir("", "lib-file")
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require.NoError(err)
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defer os.RemoveAll(td)
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// Create a subdir that doesn't exist to test that it is created
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path := filepath.Join(td, "subdir", "file")
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// Write
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expected := []byte("hello")
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require.NoError(WriteAtomic(path, expected))
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// Read and verify
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actual, err := ioutil.ReadFile(path)
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require.NoError(err)
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require.Equal(expected, actual)
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}
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