49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
 
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package icon
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import (
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"bytes"
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"os"
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"path/filepath"
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"testing"
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)
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// TestInstall: the icon lands in the directory, is left alone when current,
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// and is repaired when the file on disk differs.
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func TestInstall(t *testing.T) {
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if len(PNG) < 8 || !bytes.HasPrefix(PNG, []byte("\x89PNG")) {
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t.Fatalf("embedded icon is not a PNG (%d bytes)", len(PNG))
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}
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dir := filepath.Join(t.TempDir(), "talk")
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path, err := Install(dir)
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if err != nil {
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t.Fatal(err)
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}
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if path != filepath.Join(dir, FileName) {
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t.Errorf("path = %q", path)
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}
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got, err := os.ReadFile(path)
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if err != nil || !bytes.Equal(got, PNG) {
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t.Fatalf("installed file differs (err %v)", err)
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}
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first, _ := os.Stat(path)
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if _, err := Install(dir); err != nil {
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t.Fatal(err)
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}
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second, _ := os.Stat(path)
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if !second.ModTime().Equal(first.ModTime()) {
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t.Error("unchanged icon was rewritten")
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}
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if err := os.WriteFile(path, []byte("stale"), 0o644); err != nil {
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t.Fatal(err)
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}
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if _, err := Install(dir); err != nil {
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t.Fatal(err)
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}
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got, _ = os.ReadFile(path)
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if !bytes.Equal(got, PNG) {
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t.Error("stale icon was not replaced")
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}
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if _, err := Install(""); err == nil {
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t.Error("Install(\"\") succeeded")
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}
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}
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