archiver: Move tests back into the same file

Move all Archiver tests back into `archiver_test.go` and add some tiny
helpers to mock what `lstat` returns (for Windows and Unix separately).

internal/archiver/archiver_nowin_test.go

@@ -1,98 +0,0 @@
-// +build !windows
-
-package archiver
-
-import (
-	"context"
-	"os"
-	"syscall"
-	"testing"
-
-	"github.com/google/go-cmp/cmp"
-	"github.com/restic/restic/internal/checker"
-	"github.com/restic/restic/internal/fs"
-	"github.com/restic/restic/internal/restic"
-)
-
-func TestMetadataChanged(t *testing.T) {
-	files := TestDir{
-		"testfile": TestFile{
-			Content: "foo bar test file",
-		},
-	}
-
-	tempdir, repo, cleanup := prepareTempdirRepoSrc(t, files)
-	defer cleanup()
-
-	back := fs.TestChdir(t, tempdir)
-	defer back()
-
-	// get metadata
-	fi := lstat(t, "testfile")
-	want, err := restic.NodeFromFileInfo("testfile", fi)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	fs := &StatFS{
-		FS: fs.Local{},
-		OverrideLstat: map[string]os.FileInfo{
-			"testfile": fi,
-		},
-	}
-
-	snapshotID, node2 := snapshot(t, repo, fs, restic.ID{}, "testfile")
-
-	// set some values so we can then compare the nodes
-	want.Content = node2.Content
-	want.Path = ""
-	want.ExtendedAttributes = nil
-
-	// make sure that metadata was recorded successfully
-	if !cmp.Equal(want, node2) {
-		t.Fatalf("metadata does not match:\n%v", cmp.Diff(want, node2))
-	}
-
-	// modify the mode
-	stat, ok := fi.Sys().(*syscall.Stat_t)
-	if ok {
-		// change a few values
-		stat.Mode = 0400
-		stat.Uid = 1234
-		stat.Gid = 1235
-
-		// wrap the os.FileInfo so we can return a modified stat_t
-		fi = wrappedFileInfo{
-			FileInfo: fi,
-			sys:      stat,
-			mode:     0400,
-		}
-		fs.OverrideLstat["testfile"] = fi
-	} else {
-		// skip the test on this platform
-		t.Skipf("unable to modify os.FileInfo, Sys() returned %T", fi.Sys())
-	}
-
-	want, err = restic.NodeFromFileInfo("testfile", fi)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	// make another snapshot
-	snapshotID, node3 := snapshot(t, repo, fs, snapshotID, "testfile")
-
-	// set some values so we can then compare the nodes
-	want.Content = node2.Content
-	want.Path = ""
-	want.ExtendedAttributes = nil
-
-	// make sure that metadata was recorded successfully
-	if !cmp.Equal(want, node3) {
-		t.Fatalf("metadata does not match:\n%v", cmp.Diff(want, node2))
-	}
-
-	// make sure the content matches
-	TestEnsureFileContent(context.Background(), t, repo, "testfile", node3, files["testfile"].(TestFile))
-
-	checker.TestCheckRepo(t, repo)
-}

internal/archiver/archiver_test.go

@@ -14,6 +14,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/restic/restic/internal/checker"
 	"github.com/restic/restic/internal/errors"
 	"github.com/restic/restic/internal/fs"
@@ -2012,16 +2013,69 @@ func (f fileStat) Stat() (os.FileInfo, error) {
 	return f.fi, nil
 }
 
-type wrappedFileInfo struct {
-	os.FileInfo
-	sys  interface{}
-	mode os.FileMode
-}
+func TestMetadataChanged(t *testing.T) {
+	files := TestDir{
+		"testfile": TestFile{
+			Content: "foo bar test file",
+		},
+	}
 
-func (fi wrappedFileInfo) Sys() interface{} {
-	return fi.sys
-}
+	tempdir, repo, cleanup := prepareTempdirRepoSrc(t, files)
+	defer cleanup()
 
-func (fi wrappedFileInfo) Mode() os.FileMode {
-	return fi.mode
+	back := fs.TestChdir(t, tempdir)
+	defer back()
+
+	// get metadata
+	fi := lstat(t, "testfile")
+	want, err := restic.NodeFromFileInfo("testfile", fi)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	fs := &StatFS{
+		FS: fs.Local{},
+		OverrideLstat: map[string]os.FileInfo{
+			"testfile": fi,
+		},
+	}
+
+	snapshotID, node2 := snapshot(t, repo, fs, restic.ID{}, "testfile")
+
+	// set some values so we can then compare the nodes
+	want.Content = node2.Content
+	want.Path = ""
+	want.ExtendedAttributes = nil
+
+	// make sure that metadata was recorded successfully
+	if !cmp.Equal(want, node2) {
+		t.Fatalf("metadata does not match:\n%v", cmp.Diff(want, node2))
+	}
+
+	// modify the mode by wrapping it in a new struct
+	fs.OverrideLstat["testfile"] = wrapFileInfo(t, fi, 0400, 51234, 51235)
+
+	// set the override values in the 'want' node which
+	want.Mode = 0400
+	// ignore UID and GID on Windows
+	if runtime.GOOS != "windows" {
+		want.UID = 51234
+		want.GID = 51235
+	}
+	// no user and group name
+	want.User = ""
+	want.Group = ""
+
+	// make another snapshot
+	snapshotID, node3 := snapshot(t, repo, fs, snapshotID, "testfile")
+
+	// make sure that metadata was recorded successfully
+	if !cmp.Equal(want, node3) {
+		t.Fatalf("metadata does not match:\n%v", cmp.Diff(want, node3))
+	}
+
+	// make sure the content matches
+	TestEnsureFileContent(context.Background(), t, repo, "testfile", node3, files["testfile"].(TestFile))
+
+	checker.TestCheckRepo(t, repo)
 }

internal/archiver/archiver_unix_test.go

@@ -0,0 +1,41 @@
+// +build !windows
+
+package archiver
+
+import (
+	"os"
+	"syscall"
+	"testing"
+)
+
+type wrappedFileInfo struct {
+	os.FileInfo
+	sys  interface{}
+	mode os.FileMode
+}
+
+func (fi wrappedFileInfo) Sys() interface{} {
+	return fi.sys
+}
+
+func (fi wrappedFileInfo) Mode() os.FileMode {
+	return fi.mode
+}
+
+// wrapFileInfo returns a new os.FileInfo with the mode, owner, and group fields changed.
+func wrapFileInfo(t testing.TB, fi os.FileInfo, mode os.FileMode, uid, gid uint) os.FileInfo {
+	// get the underlying stat_t and modify the values
+	stat := fi.Sys().(*syscall.Stat_t)
+	stat.Mode = uint32(mode)
+	stat.Uid = uint32(uid)
+	stat.Gid = uint32(gid)
+
+	// wrap the os.FileInfo so we can return a modified stat_t
+	res := wrappedFileInfo{
+		FileInfo: fi,
+		sys:      stat,
+		mode:     mode,
+	}
+
+	return res
+}

internal/archiver/archiver_windows_test.go

@@ -0,0 +1,28 @@
+// +build windows
+
+package archiver
+
+import (
+	"os"
+	"testing"
+)
+
+type wrappedFileInfo struct {
+	os.FileInfo
+	mode os.FileMode
+}
+
+func (fi wrappedFileInfo) Mode() os.FileMode {
+	return fi.mode
+}
+
+// wrapFileInfo returns a new os.FileInfo with the mode, owner, and group fields changed.
+func wrapFileInfo(t testing.TB, fi os.FileInfo, mode os.FileMode, uid, gid uint) os.FileInfo {
+	// wrap the os.FileInfo and return the modified mode, uid and gid are ignored on Windows
+	res := wrappedFileInfo{
+		FileInfo: fi,
+		mode:     mode,
+	}
+
+	return res
+}