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package funcs
import (
"bytes"
"context"
"io/fs"
"os"
"path/filepath"
"strconv"
"testing"
"testing/fstest"
"github.com/hack-pad/hackpadfs"
osfs "github.com/hack-pad/hackpadfs/os"
"github.com/hairyhenderson/gomplate/v4/internal/datafs"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
tfs "gotest.tools/v3/fs"
)
func TestCreateFileFuncs(t *testing.T) {
t.Parallel()
for i := 0; i < 10; i++ {
// Run this a bunch to catch race conditions
t.Run(strconv.Itoa(i), func(t *testing.T) {
t.Parallel()
ctx := context.Background()
fmap := CreateFileFuncs(ctx)
actual := fmap["file"].(func() interface{})
assert.Same(t, ctx, actual().(*FileFuncs).ctx)
})
}
}
func TestFileExists(t *testing.T) {
t.Parallel()
fsys := fstest.MapFS{
"tmp": &fstest.MapFile{Mode: fs.ModeDir | 0o777},
"tmp/foo": &fstest.MapFile{Data: []byte("foo")},
}
ff := &FileFuncs{fs: datafs.WrapWdFS(fsys)}
assert.True(t, ff.Exists("/tmp/foo"))
assert.False(t, ff.Exists("/tmp/bar"))
}
func TestFileIsDir(t *testing.T) {
t.Parallel()
fsys := fstest.MapFS{
"tmp": &fstest.MapFile{Mode: fs.ModeDir | 0o777},
"tmp/foo": &fstest.MapFile{Data: []byte("foo")},
}
ff := &FileFuncs{fs: datafs.WrapWdFS(fsys)}
assert.True(t, ff.IsDir("/tmp"))
assert.False(t, ff.IsDir("/tmp/foo"))
}
func TestFileWalk(t *testing.T) {
t.Parallel()
fsys := fstest.MapFS{
"tmp": &fstest.MapFile{Mode: fs.ModeDir | 0o777},
"tmp/bar": &fstest.MapFile{Mode: fs.ModeDir | 0o777},
"tmp/bar/baz": &fstest.MapFile{Mode: fs.ModeDir | 0o777},
"tmp/bar/baz/foo": &fstest.MapFile{Data: []byte("foo")},
}
ff := &FileFuncs{fs: datafs.WrapWdFS(fsys)}
expectedLists := [][]string{{"tmp"}, {"tmp", "bar"}, {"tmp", "bar", "baz"}, {"tmp", "bar", "baz", "foo"}}
expectedPaths := make([]string, 0)
for _, path := range expectedLists {
expectedPaths = append(expectedPaths, string(filepath.Separator)+filepath.Join(path...))
}
actualPaths, err := ff.Walk(string(filepath.Separator) + "tmp")
require.NoError(t, err)
assert.Equal(t, expectedPaths, actualPaths)
}
func TestReadDir(t *testing.T) {
fsys := fs.FS(fstest.MapFS{
"tmp": &fstest.MapFile{Mode: fs.ModeDir | 0o777},
"tmp/foo": &fstest.MapFile{Data: []byte("foo")},
"tmp/bar": &fstest.MapFile{Data: []byte("bar")},
"tmp/baz": &fstest.MapFile{Data: []byte("baz")},
"tmp/qux": &fstest.MapFile{Mode: fs.ModeDir | 0o777},
"tmp/qux/quux": &fstest.MapFile{Data: []byte("quux")},
})
fsys = datafs.WrapWdFS(fsys)
ff := &FileFuncs{
ctx: context.Background(),
fs: fsys,
}
actual, err := ff.ReadDir("/tmp")
require.NoError(t, err)
assert.Equal(t, []string{"bar", "baz", "foo", "qux"}, actual)
_, err = ff.ReadDir("/tmp/foo")
assert.Error(t, err)
}
func TestWrite(t *testing.T) {
oldwd, _ := os.Getwd()
defer os.Chdir(oldwd)
rootDir := tfs.NewDir(t, "gomplate-test")
t.Cleanup(rootDir.Remove)
// we want to use a real filesystem here, so we can test interactions with
// the current working directory
fsys := datafs.WrapWdFS(osfs.NewFS())
f := &FileFuncs{
ctx: context.Background(),
fs: fsys,
}
newwd := rootDir.Join("the", "path", "we", "want")
badwd := rootDir.Join("some", "other", "dir")
hackpadfs.MkdirAll(fsys, newwd, 0755)
hackpadfs.MkdirAll(fsys, badwd, 0755)
newwd, _ = filepath.EvalSymlinks(newwd)
badwd, _ = filepath.EvalSymlinks(badwd)
err := os.Chdir(newwd)
require.NoError(t, err)
_, err = f.Write("/foo", []byte("Hello world"))
assert.Error(t, err)
rel, err := filepath.Rel(newwd, badwd)
require.NoError(t, err)
_, err = f.Write(rel, []byte("Hello world"))
assert.Error(t, err)
foopath := filepath.Join(newwd, "foo")
_, err = f.Write(foopath, []byte("Hello world"))
require.NoError(t, err)
out, err := fs.ReadFile(fsys, foopath)
require.NoError(t, err)
assert.Equal(t, "Hello world", string(out))
_, err = f.Write(foopath, []byte("truncate"))
require.NoError(t, err)
out, err = fs.ReadFile(fsys, foopath)
require.NoError(t, err)
assert.Equal(t, "truncate", string(out))
foopath = filepath.Join(newwd, "nonexistant", "subdir", "foo")
_, err = f.Write(foopath, "Hello subdirranean world!")
require.NoError(t, err)
out, err = fs.ReadFile(fsys, foopath)
require.NoError(t, err)
assert.Equal(t, "Hello subdirranean world!", string(out))
_, err = f.Write(foopath, bytes.NewBufferString("Hello from a byte buffer!"))
require.NoError(t, err)
out, err = fs.ReadFile(fsys, foopath)
require.NoError(t, err)
assert.Equal(t, "Hello from a byte buffer!", string(out))
}
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