github.com/containerd/Containerd@v1.4.13/diff/apply/apply_linux_test.go (about)

     1  // +build linux
     2  
     3  /*
     4     Copyright The containerd Authors.
     5  
     6     Licensed under the Apache License, Version 2.0 (the "License");
     7     you may not use this file except in compliance with the License.
     8     You may obtain a copy of the License at
     9  
    10         http://www.apache.org/licenses/LICENSE-2.0
    11  
    12     Unless required by applicable law or agreed to in writing, software
    13     distributed under the License is distributed on an "AS IS" BASIS,
    14     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    15     See the License for the specific language governing permissions and
    16     limitations under the License.
    17  */
    18  
    19  package apply
    20  
    21  import (
    22  	"testing"
    23  )
    24  
    25  func TestGetOverlayPath(t *testing.T) {
    26  	good := []string{"upperdir=/test/upper", "lowerdir=/test/lower1:/test/lower2", "workdir=/test/work"}
    27  	path, parents, err := getOverlayPath(good)
    28  	if err != nil {
    29  		t.Fatalf("Get overlay path failed: %v", err)
    30  	}
    31  	if path != "/test/upper" {
    32  		t.Fatalf("Unexpected upperdir: %q", path)
    33  	}
    34  	if len(parents) != 2 || parents[0] != "/test/lower1" || parents[1] != "/test/lower2" {
    35  		t.Fatalf("Unexpected parents: %v", parents)
    36  	}
    37  
    38  	bad := []string{"lowerdir=/test/lower"}
    39  	_, _, err = getOverlayPath(bad)
    40  	if err == nil {
    41  		t.Fatalf("An error is expected")
    42  	}
    43  }
    44  
    45  func TestGetAufsPath(t *testing.T) {
    46  	for _, test := range []struct {
    47  		options   []string
    48  		expectErr bool
    49  	}{
    50  		{
    51  			options:   []string{"random:option", "br:/test/rw=rw:/test/ro=ro+wh"},
    52  			expectErr: false,
    53  		},
    54  		{
    55  			options:   []string{"random:option"},
    56  			expectErr: true,
    57  		},
    58  		{
    59  			options:   []string{"br:/test/ro=ro+wh"},
    60  			expectErr: true,
    61  		},
    62  	} {
    63  		path, parents, err := getAufsPath(test.options)
    64  		if test.expectErr {
    65  			if err == nil {
    66  				t.Fatalf("An error is expected")
    67  			}
    68  			continue
    69  		}
    70  		if err != nil {
    71  			t.Fatalf("Get aufs path failed: %v", err)
    72  		}
    73  		if path != "/test/rw" {
    74  			t.Fatalf("Unexpected rw dir: %q", path)
    75  		}
    76  		if len(parents) != 1 || parents[0] != "/test/ro" {
    77  			t.Fatalf("Unexpected parents: %v", parents)
    78  		}
    79  
    80  	}
    81  }