storj.io/minio@v0.0.0-20230509071714-0cbc90f649b1/cmd/format-fs_test.go (about)

     1  /*
     2   * MinIO Cloud Storage, (C) 2017 MinIO, Inc.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *     http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  package cmd
    18  
    19  import (
    20  	"context"
    21  	"os"
    22  	"path/filepath"
    23  	"testing"
    24  )
    25  
    26  // TestFSFormatFS - tests initFormatFS, formatMetaGetFormatBackendFS, formatFSGetVersion.
    27  func TestFSFormatFS(t *testing.T) {
    28  	// Prepare for testing
    29  	disk := filepath.Join(globalTestTmpDir, "minio-"+nextSuffix())
    30  	defer os.RemoveAll(disk)
    31  
    32  	fsFormatPath := pathJoin(disk, minioMetaBucket, formatConfigFile)
    33  
    34  	// Assign a new UUID.
    35  	uuid := mustGetUUID()
    36  
    37  	// Initialize meta volume, if volume already exists ignores it.
    38  	if err := initMetaVolumeFS(disk, uuid); err != nil {
    39  		t.Fatal(err)
    40  	}
    41  
    42  	rlk, err := initFormatFS(context.Background(), disk)
    43  	if err != nil {
    44  		t.Fatal(err)
    45  	}
    46  	rlk.Close()
    47  
    48  	// Do the basic sanity checks to check if initFormatFS() did its job.
    49  	f, err := os.OpenFile(fsFormatPath, os.O_RDWR|os.O_SYNC, 0)
    50  	if err != nil {
    51  		t.Fatal(err)
    52  	}
    53  	defer f.Close()
    54  
    55  	format, err := formatMetaGetFormatBackendFS(f)
    56  	if err != nil {
    57  		t.Fatal(err)
    58  	}
    59  	if format != formatBackendFS {
    60  		t.Fatalf(`expected: %s, got: %s`, formatBackendFS, format)
    61  	}
    62  	version, err := formatFSGetVersion(f)
    63  	if err != nil {
    64  		t.Fatal(err)
    65  	}
    66  	if version != formatFSVersionV2 {
    67  		t.Fatalf(`expected: %s, got: %s`, formatFSVersionV2, version)
    68  	}
    69  
    70  	// Corrupt the format.json file and test the functions.
    71  	// formatMetaGetFormatBackendFS, formatFSGetVersion, initFormatFS should return errors.
    72  	if err = f.Truncate(0); err != nil {
    73  		t.Fatal(err)
    74  	}
    75  	if _, err = f.WriteString("b"); err != nil {
    76  		t.Fatal(err)
    77  	}
    78  
    79  	if _, err = formatMetaGetFormatBackendFS(f); err == nil {
    80  		t.Fatal("expected to fail")
    81  	}
    82  	if _, err = formatFSGetVersion(rlk); err == nil {
    83  		t.Fatal("expected to fail")
    84  	}
    85  	if _, err = initFormatFS(context.Background(), disk); err == nil {
    86  		t.Fatal("expected to fail")
    87  	}
    88  
    89  	// With unknown formatMetaV1.Version formatMetaGetFormatBackendFS, initFormatFS should return error.
    90  	if err = f.Truncate(0); err != nil {
    91  		t.Fatal(err)
    92  	}
    93  	// Here we set formatMetaV1.Version to "2"
    94  	if _, err = f.WriteString(`{"version":"2","format":"fs","fs":{"version":"1"}}`); err != nil {
    95  		t.Fatal(err)
    96  	}
    97  	if _, err = formatMetaGetFormatBackendFS(f); err == nil {
    98  		t.Fatal("expected to fail")
    99  	}
   100  	if _, err = initFormatFS(context.Background(), disk); err == nil {
   101  		t.Fatal("expected to fail")
   102  	}
   103  }