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