| package mounts // import "github.com/docker/docker/volume/mounts" |
| |
| import ( |
| "fmt" |
| "strings" |
| "testing" |
| |
| "github.com/docker/docker/api/types/mount" |
| "gotest.tools/v3/assert" |
| ) |
| |
| func TestLinuxParseMountRaw(t *testing.T) { |
| valid := []string{ |
| "/home", |
| "/home:/home", |
| "/home:/something/else", |
| "/with space", |
| "/home:/with space", |
| "relative:/absolute-path", |
| "hostPath:/containerPath:ro", |
| "/hostPath:/containerPath:rw", |
| "/rw:/ro", |
| "/hostPath:/containerPath:shared", |
| "/hostPath:/containerPath:rshared", |
| "/hostPath:/containerPath:slave", |
| "/hostPath:/containerPath:rslave", |
| "/hostPath:/containerPath:private", |
| "/hostPath:/containerPath:rprivate", |
| "/hostPath:/containerPath:ro,shared", |
| "/hostPath:/containerPath:ro,slave", |
| "/hostPath:/containerPath:ro,private", |
| "/hostPath:/containerPath:ro,z,shared", |
| "/hostPath:/containerPath:ro,Z,slave", |
| "/hostPath:/containerPath:Z,ro,slave", |
| "/hostPath:/containerPath:slave,Z,ro", |
| "/hostPath:/containerPath:Z,slave,ro", |
| "/hostPath:/containerPath:slave,ro,Z", |
| "/hostPath:/containerPath:rslave,ro,Z", |
| "/hostPath:/containerPath:ro,rshared,Z", |
| "/hostPath:/containerPath:ro,Z,rprivate", |
| } |
| |
| invalid := map[string]string{ |
| "": "invalid volume specification", |
| "./": "mount path must be absolute", |
| "../": "mount path must be absolute", |
| "/:../": "mount path must be absolute", |
| "/:path": "mount path must be absolute", |
| ":": "invalid volume specification", |
| "/tmp:": "invalid volume specification", |
| ":test": "invalid volume specification", |
| ":/test": "invalid volume specification", |
| "tmp:": "invalid volume specification", |
| ":test:": "invalid volume specification", |
| "::": "invalid volume specification", |
| ":::": "invalid volume specification", |
| "/tmp:::": "invalid volume specification", |
| ":/tmp::": "invalid volume specification", |
| "/path:rw": "invalid volume specification", |
| "/path:ro": "invalid volume specification", |
| "/rw:rw": "invalid volume specification", |
| "path:ro": "invalid volume specification", |
| "/path:/path:sw": `invalid mode`, |
| "/path:/path:rwz": `invalid mode`, |
| "/path:/path:ro,rshared,rslave": `invalid mode`, |
| "/path:/path:ro,z,rshared,rslave": `invalid mode`, |
| "/path:shared": "invalid volume specification", |
| "/path:slave": "invalid volume specification", |
| "/path:private": "invalid volume specification", |
| "name:/absolute-path:shared": "invalid volume specification", |
| "name:/absolute-path:rshared": "invalid volume specification", |
| "name:/absolute-path:slave": "invalid volume specification", |
| "name:/absolute-path:rslave": "invalid volume specification", |
| "name:/absolute-path:private": "invalid volume specification", |
| "name:/absolute-path:rprivate": "invalid volume specification", |
| } |
| |
| parser := NewLinuxParser() |
| if p, ok := parser.(*linuxParser); ok { |
| p.fi = mockFiProvider{} |
| } |
| |
| for _, path := range valid { |
| if _, err := parser.ParseMountRaw(path, "local"); err != nil { |
| t.Errorf("ParseMountRaw(`%q`) should succeed: error %q", path, err) |
| } |
| } |
| |
| for path, expectedError := range invalid { |
| if mp, err := parser.ParseMountRaw(path, "local"); err == nil { |
| t.Errorf("ParseMountRaw(`%q`) should have failed validation. Err '%v' - MP: %v", path, err, mp) |
| } else { |
| if !strings.Contains(err.Error(), expectedError) { |
| t.Errorf("ParseMountRaw(`%q`) error should contain %q, got %v", path, expectedError, err.Error()) |
| } |
| } |
| } |
| } |
| |
| func TestLinuxParseMountRawSplit(t *testing.T) { |
| cases := []struct { |
| bind string |
| driver string |
| expType mount.Type |
| expDest string |
| expSource string |
| expName string |
| expDriver string |
| expRW bool |
| fail bool |
| }{ |
| {"/tmp:/tmp1", "", mount.TypeBind, "/tmp1", "/tmp", "", "", true, false}, |
| {"/tmp:/tmp2:ro", "", mount.TypeBind, "/tmp2", "/tmp", "", "", false, false}, |
| {"/tmp:/tmp3:rw", "", mount.TypeBind, "/tmp3", "/tmp", "", "", true, false}, |
| {"/tmp:/tmp4:foo", "", mount.TypeBind, "", "", "", "", false, true}, |
| {"name:/named1", "", mount.TypeVolume, "/named1", "", "name", "", true, false}, |
| {"name:/named2", "external", mount.TypeVolume, "/named2", "", "name", "external", true, false}, |
| {"name:/named3:ro", "local", mount.TypeVolume, "/named3", "", "name", "local", false, false}, |
| {"local/name:/tmp:rw", "", mount.TypeVolume, "/tmp", "", "local/name", "", true, false}, |
| {"/tmp:tmp", "", mount.TypeBind, "", "", "", "", true, true}, |
| } |
| |
| parser := NewLinuxParser() |
| if p, ok := parser.(*linuxParser); ok { |
| p.fi = mockFiProvider{} |
| } |
| |
| for i, c := range cases { |
| c := c |
| t.Run(fmt.Sprintf("%d_%s", i, c.bind), func(t *testing.T) { |
| m, err := parser.ParseMountRaw(c.bind, c.driver) |
| if c.fail { |
| assert.ErrorContains(t, err, "", "expected an error") |
| return |
| } |
| |
| assert.NilError(t, err) |
| assert.Equal(t, m.Destination, c.expDest) |
| assert.Equal(t, m.Source, c.expSource) |
| assert.Equal(t, m.Name, c.expName) |
| assert.Equal(t, m.Driver, c.expDriver) |
| assert.Equal(t, m.RW, c.expRW) |
| assert.Equal(t, m.Type, c.expType) |
| }) |
| } |
| } |
| |
| // TestLinuxParseMountSpecBindWithFileinfoError makes sure that the parser returns |
| // the error produced by the fileinfo provider. |
| // |
| // Some extra context for the future in case of changes and possible wtf are we |
| // testing this for: |
| // |
| // Currently this "fileInfoProvider" returns (bool, bool, error) |
| // The 1st bool is "does this path exist" |
| // The 2nd bool is "is this path a dir" |
| // Then of course the error is an error. |
| // |
| // The issue is the parser was ignoring the error and only looking at the |
| // "does this path exist" boolean, which is always false if there is an error. |
| // Then the error returned to the caller was a (slightly, maybe) friendlier |
| // error string than what comes from `os.Stat` |
| // So ...the caller was always getting an error saying the path doesn't exist |
| // even if it does exist but got some other error (like a permission error). |
| // This is confusing to users. |
| func TestLinuxParseMountSpecBindWithFileinfoError(t *testing.T) { |
| parser := NewLinuxParser() |
| testErr := fmt.Errorf("some crazy error") |
| if pr, ok := parser.(*linuxParser); ok { |
| pr.fi = &mockFiProviderWithError{err: testErr} |
| } |
| |
| _, err := parser.ParseMountSpec(mount.Mount{ |
| Type: mount.TypeBind, |
| Source: `/bananas`, |
| Target: `/bananas`, |
| }) |
| assert.ErrorContains(t, err, testErr.Error()) |
| } |
| |
| func TestConvertTmpfsOptions(t *testing.T) { |
| type testCase struct { |
| opt mount.TmpfsOptions |
| readOnly bool |
| expectedSubstrings []string |
| unexpectedSubstrings []string |
| } |
| cases := []testCase{ |
| { |
| opt: mount.TmpfsOptions{SizeBytes: 1024 * 1024, Mode: 0700}, |
| readOnly: false, |
| expectedSubstrings: []string{"size=1m", "mode=700"}, |
| unexpectedSubstrings: []string{"ro"}, |
| }, |
| { |
| opt: mount.TmpfsOptions{}, |
| readOnly: true, |
| expectedSubstrings: []string{"ro"}, |
| unexpectedSubstrings: []string{}, |
| }, |
| } |
| p := NewLinuxParser() |
| for _, c := range cases { |
| data, err := p.ConvertTmpfsOptions(&c.opt, c.readOnly) |
| if err != nil { |
| t.Fatalf("could not convert %+v (readOnly: %v) to string: %v", |
| c.opt, c.readOnly, err) |
| } |
| t.Logf("data=%q", data) |
| for _, s := range c.expectedSubstrings { |
| if !strings.Contains(data, s) { |
| t.Fatalf("expected substring: %s, got %v (case=%+v)", s, data, c) |
| } |
| } |
| for _, s := range c.unexpectedSubstrings { |
| if strings.Contains(data, s) { |
| t.Fatalf("unexpected substring: %s, got %v (case=%+v)", s, data, c) |
| } |
| } |
| } |
| } |
