37 lines
927 B
Go
37 lines
927 B
Go
package config
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import (
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"flag"
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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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// update allows golden files to be updated based on the current output.
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var update = flag.Bool("update", false, "update golden files")
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// golden reads the expected value from the file at filename and returns the value.
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// filename is relative to the ./testdata directory.
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//
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// If the `-update` flag is used with `go test`, the golden file will be updated
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// to the value of actual.
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func golden(t *testing.T, actual, filename string) string {
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t.Helper()
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path := filepath.Join("testdata", filename)
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if *update && actual != "" {
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if dir := filepath.Dir(path); dir != "." {
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require.NoError(t, os.MkdirAll(dir, 0755))
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}
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err := ioutil.WriteFile(path, []byte(actual), 0644)
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require.NoError(t, err)
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}
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expected, err := ioutil.ReadFile(path)
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require.NoError(t, err)
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return string(expected)
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}
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