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70 lines
1.4 KiB
Go
70 lines
1.4 KiB
Go
package utils
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import (
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"io"
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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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var testDataDir = filepath.Join("testdata")
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func testFile(name string) string {
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return filepath.Join(testDataDir, name)
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}
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func TestCopyFileContents(t *testing.T) {
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f, err := os.CreateTemp("", "ioutil-test")
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if err != nil {
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t.Fatal(err)
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}
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err = f.Close()
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require.NoError(t, err)
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err = CopyFileContents(f.Name(), testFile("test.txt"), 0x644)
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require.NoError(t, err)
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b, err := os.ReadFile(f.Name())
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if err != nil {
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t.Fatal(err)
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}
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require.Equal(t, "content\n", string(b))
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err = CopyFileContents(f.Name(), testFile("missing.txt"), 0x644)
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require.Error(t, err)
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}
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func TestReadFileMagic(t *testing.T) {
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b, err := ReadFileMagic(testFile("test.txt"))
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require.NoError(t, err)
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require.Equal(t, "cont", string(b))
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b, err = ReadFileMagic(testFile("empty.txt"))
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require.NoError(t, err)
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require.Equal(t, []byte{0, 0, 0, 0}, b)
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_, err = ReadFileMagic(testFile("missing.txt"))
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require.Error(t, err)
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}
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func TestVisitCreatedFile(t *testing.T) {
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f, err := os.CreateTemp("", "ioutil-test")
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if err != nil {
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t.Fatal(err)
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}
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err = f.Close()
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require.NoError(t, err)
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err = VisitCreatedFile(f.Name(), func(w io.Writer) error {
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_, e := io.WriteString(w, "test")
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return e
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})
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require.NoError(t, err)
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b, err := os.ReadFile(f.Name())
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if err != nil {
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t.Fatal(err)
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}
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require.Equal(t, "test", string(b))
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}
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