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package load
import (
"io/fs"
"os"
"path/filepath"
"slices"
"testing"
"testing/fstest"
"github.com/go-quicktest/qt"
)
func TestIOFS(t *testing.T) {
dir := t.TempDir()
onDiskFiles := []string{
"foo/bar/a",
"foo/bar/b",
"foo/baz",
"arble",
}
for _, f := range onDiskFiles {
writeFile(t, filepath.Join(dir, f), f)
}
overlayFiles := []string{
"foo/bar/a",
"foo/bar/c",
"other/x",
}
overlay := map[string]Source{}
for _, f := range overlayFiles {
overlay[filepath.Join(dir, f)] = FromString(f + " overlay")
}
fsys, err := newFileSystem(&Config{
Dir: filepath.Join(dir, "foo"),
Overlay: overlay,
})
qt.Assert(t, qt.IsNil(err))
ffsys := fsys.ioFS(dir, "v0.12.0")
err = fstest.TestFS(ffsys, append(slices.Clip(onDiskFiles), overlayFiles...)...)
qt.Assert(t, qt.IsNil(err))
checked := make(map[string]bool)
for _, f := range overlayFiles {
data, err := fs.ReadFile(ffsys, f)
qt.Assert(t, qt.IsNil(err))
qt.Assert(t, qt.Equals(string(data), f+" overlay"))
checked[f] = true
}
for _, f := range onDiskFiles {
if checked[f] {
continue
}
data, err := fs.ReadFile(ffsys, f)
qt.Assert(t, qt.IsNil(err))
qt.Assert(t, qt.Equals(string(data), f))
}
}
func writeFile(t *testing.T, fpath string, content string) {
err := os.MkdirAll(filepath.Dir(fpath), 0o777)
qt.Assert(t, qt.IsNil(err))
err = os.WriteFile(fpath, []byte(content), 0o666)
qt.Assert(t, qt.IsNil(err))
}
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