swarm/api: support mounting manifests via FUSE (#3690)

swarm/api/swarmfs_unix_test.go

@@ -0,0 +1,122 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// +build linux darwin
+
+package api
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+var testUploadDir, _ = ioutil.TempDir(os.TempDir(), "fuse-source")
+var testMountDir, _ = ioutil.TempDir(os.TempDir(), "fuse-dest")
+
+func testFuseFileSystem(t *testing.T, f func(*FileSystem)) {
+	testApi(t, func(api *Api) {
+		f(NewFileSystem(api))
+	})
+}
+
+func createTestFiles(t *testing.T, files []string) {
+
+	os.RemoveAll(testUploadDir)
+	os.RemoveAll(testMountDir)
+	defer os.MkdirAll(testMountDir, 0777)
+
+	for f := range files {
+		actualPath := filepath.Join(testUploadDir, files[f])
+		filePath := filepath.Dir(actualPath)
+
+		err := os.MkdirAll(filePath, 0777)
+		if err != nil {
+			t.Fatalf("Error creating directory '%v' : %v", filePath, err)
+		}
+
+		_, err1 := os.OpenFile(actualPath, os.O_RDONLY|os.O_CREATE, 0666)
+		if err1 != nil {
+			t.Fatalf("Error creating file %v: %v", actualPath, err1)
+		}
+	}
+
+}
+
+func compareFiles(t *testing.T, files []string) {
+
+	for f := range files {
+
+		sourceFile := filepath.Join(testUploadDir, files[f])
+		destinationFile := filepath.Join(testMountDir, files[f])
+
+		sfinfo, err := os.Stat(sourceFile)
+		if err != nil {
+			t.Fatalf("Source file %v missing in mount: %v", files[f], err)
+		}
+
+		dfinfo, err := os.Stat(destinationFile)
+		if err != nil {
+			t.Fatalf("Destination file %v missing in mount: %v", files[f], err)
+		}
+
+		if sfinfo.Size() != dfinfo.Size() {
+			t.Fatalf("Size mismatch  source (%v) vs destination(%v)", sfinfo.Size(), dfinfo.Size())
+		}
+
+		if dfinfo.Mode().Perm().String() != "-r-x------" {
+			t.Fatalf("Permission is not 0500for file: %v", err)
+		}
+
+	}
+}
+
+func doHashTest(fs *FileSystem, t *testing.T, ensName string, files ...string) {
+
+	createTestFiles(t, files)
+	bzzhash, err := fs.Upload(testUploadDir, "")
+	if err != nil {
+		t.Fatalf("Error uploading directory %v: %v", testUploadDir, err)
+	}
+
+	swarmfs := NewSwarmFS(fs.api)
+	_ ,err1 := swarmfs.Mount(bzzhash, testMountDir)
+	if err1 != nil {
+
+		t.Fatalf("Error mounting hash  %v: %v", bzzhash, err)
+	}
+	compareFiles(t, files)
+	_, err2 := swarmfs.Unmount(testMountDir)
+	if err2 != nil {
+		t.Fatalf("Error unmounting path  %v: %v", testMountDir, err)
+	}
+	swarmfs.Stop()
+
+}
+
+// mounting with manifest Hash
+func TestFuseMountingScenarios(t *testing.T) {
+	testFuseFileSystem(t, func(fs *FileSystem) {
+
+		//doHashTest(fs,t, "test","1.txt")
+		doHashTest(fs, t, "", "1.txt")
+		doHashTest(fs, t, "", "1.txt", "11.txt", "111.txt", "two/2.txt", "two/two/2.txt", "three/3.txt")
+		doHashTest(fs, t, "", "1/2/3/4/5/6/7/8/9/10/11/12/1.txt")
+		doHashTest(fs, t, "", "one/one.txt", "one.txt", "once/one.txt", "one/one/one.txt")
+
+	})
+}