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37 lines
753 B
37 lines
753 B
package os
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"os"
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"testing"
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)
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func TestCopyFile(t *testing.T) {
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tmpfile, err := ioutil.TempFile("", "example")
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if err != nil {
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t.Fatal(err)
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}
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defer os.Remove(tmpfile.Name())
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content := []byte("hello world")
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if _, err := tmpfile.Write(content); err != nil {
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t.Fatal(err)
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}
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copyfile := fmt.Sprintf("%s.copy", tmpfile.Name())
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if err := CopyFile(tmpfile.Name(), copyfile); err != nil {
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t.Fatal(err)
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}
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if _, err := os.Stat(copyfile); os.IsNotExist(err) {
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t.Fatal("copy should exist")
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}
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data, err := ioutil.ReadFile(copyfile)
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if err != nil {
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t.Fatal(err)
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}
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if !bytes.Equal(data, content) {
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t.Fatalf("copy file content differs: expected %v, got %v", content, data)
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}
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os.Remove(copyfile)
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}
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