fix go removeall

Signed-off-by: Thomas Tendyck <[email protected]>

src/tests/go/CMakeLists.txt

@@ -6,10 +6,10 @@ add_custom_command(
 
 add_custom_command(
   OUTPUT gotest.a
-  DEPENDS gotest.go
+  DEPENDS gotest.go removeall.go
   COMMAND
     sh -c
-    "GOROOT='${CMAKE_SOURCE_DIR}/../3rdparty/go' '${CMAKE_SOURCE_DIR}/../3rdparty/go/bin/go' build -buildmode=c-archive ${CMAKE_CURRENT_SOURCE_DIR}/gotest.go"
+    "GOROOT='${CMAKE_SOURCE_DIR}/../3rdparty/go' '${CMAKE_SOURCE_DIR}/../3rdparty/go/bin/go' build -buildmode=c-archive ${CMAKE_CURRENT_SOURCE_DIR}/gotest.go ${CMAKE_CURRENT_SOURCE_DIR}/removeall.go"
 )
 add_custom_target(gotestlib DEPENDS gotest.a)
 

src/tests/go/gotest.go

@@ -55,6 +55,11 @@ func gotest(simulate bool) int32 {
 		return -10
 	}
 
+	if err := testRemoveAll(); err != nil {
+		fmt.Println(err)
+		return -11
+	}
+
 	return 42 // success magic
 }
 

src/tests/go/removeall.go

@@ -0,0 +1,80 @@
+// Copyright 2024 Edgeless Systems GmbH. All rights reserved.
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+func testRemoveAll() error {
+	tmpDir := "/removeall-test"
+	if err := os.Mkdir(tmpDir, 0o400); err != nil {
+		return err
+	}
+
+	if err := os.RemoveAll(""); err != nil {
+		return fmt.Errorf("RemoveAll(\"\"): %v; want nil", err)
+	}
+
+	file := filepath.Join(tmpDir, "file")
+	path := filepath.Join(tmpDir, "_TestRemoveAll_")
+	fpath := filepath.Join(path, "file")
+	dpath := filepath.Join(path, "dir")
+
+	// Make a regular file and remove
+	fd, err := os.Create(file)
+	if err != nil {
+		return fmt.Errorf("create %q: %s", file, err)
+	}
+	fd.Close()
+	if err = os.RemoveAll(file); err != nil {
+		return fmt.Errorf("RemoveAll %q (first): %s", file, err)
+	}
+	if _, err = os.Lstat(file); err == nil {
+		return fmt.Errorf("Lstat %q succeeded after RemoveAll (first)", file)
+	}
+
+	// Make directory with 1 file and remove.
+	if err := os.MkdirAll(path, 0777); err != nil {
+		return fmt.Errorf("MkdirAll %q: %s", path, err)
+	}
+	fd, err = os.Create(fpath)
+	if err != nil {
+		return fmt.Errorf("create %q: %s", fpath, err)
+	}
+	fd.Close()
+	if err = os.RemoveAll(path); err != nil {
+		return fmt.Errorf("RemoveAll %q (second): %s", path, err)
+	}
+	if _, err = os.Lstat(path); err == nil {
+		return fmt.Errorf("Lstat %q succeeded after RemoveAll (second)", path)
+	}
+
+	// Make directory with file and subdirectory and remove.
+	if err = os.MkdirAll(dpath, 0777); err != nil {
+		return fmt.Errorf("MkdirAll %q: %s", dpath, err)
+	}
+	fd, err = os.Create(fpath)
+	if err != nil {
+		return fmt.Errorf("create %q: %s", fpath, err)
+	}
+	fd.Close()
+	fd, err = os.Create(dpath + "/file")
+	if err != nil {
+		return fmt.Errorf("create %q: %s", fpath, err)
+	}
+	fd.Close()
+	if err = os.RemoveAll(path); err != nil {
+		return fmt.Errorf("RemoveAll %q (third): %s", path, err)
+	}
+	if _, err := os.Lstat(path); err == nil {
+		return fmt.Errorf("Lstat %q succeeded after RemoveAll (third)", path)
+	}
+
+	return nil
+}