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- // Copyright 2015 Google Inc. All Rights Reserved.
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
- package interruptfs_test
- import (
- "bytes"
- "os"
- "os/exec"
- "path"
- "testing"
- "time"
- "github.com/jacobsa/fuse/fuseutil"
- "github.com/jacobsa/fuse/samples"
- "github.com/jacobsa/fuse/samples/interruptfs"
- . "github.com/jacobsa/oglematchers"
- . "github.com/jacobsa/ogletest"
- )
- func TestInterruptFS(t *testing.T) { RunTests(t) }
- ////////////////////////////////////////////////////////////////////////
- // Boilerplate
- ////////////////////////////////////////////////////////////////////////
- type InterruptFSTest struct {
- samples.SampleTest
- fs *interruptfs.InterruptFS
- }
- func init() { RegisterTestSuite(&InterruptFSTest{}) }
- var _ SetUpInterface = &InterruptFSTest{}
- var _ TearDownInterface = &InterruptFSTest{}
- func (t *InterruptFSTest) SetUp(ti *TestInfo) {
- var err error
- // Create the file system.
- t.fs = interruptfs.New()
- AssertEq(nil, err)
- t.Server = fuseutil.NewFileSystemServer(t.fs)
- // Mount it.
- t.SampleTest.SetUp(ti)
- }
- ////////////////////////////////////////////////////////////////////////
- // Test functions
- ////////////////////////////////////////////////////////////////////////
- func (t *InterruptFSTest) StatFoo() {
- fi, err := os.Stat(path.Join(t.Dir, "foo"))
- AssertEq(nil, err)
- ExpectEq("foo", fi.Name())
- ExpectEq(0777, fi.Mode())
- ExpectFalse(fi.IsDir())
- }
- func (t *InterruptFSTest) InterruptedDuringRead() {
- var err error
- t.fs.EnableReadBlocking()
- // Start a sub-process that attempts to read the file.
- cmd := exec.Command("cat", path.Join(t.Dir, "foo"))
- var cmdOutput bytes.Buffer
- cmd.Stdout = &cmdOutput
- cmd.Stderr = &cmdOutput
- err = cmd.Start()
- AssertEq(nil, err)
- // Wait for the command in the background, writing to a channel when it is
- // finished.
- cmdErr := make(chan error)
- go func() {
- cmdErr <- cmd.Wait()
- }()
- // Wait for the read to make it to the file system.
- t.fs.WaitForFirstRead()
- // The command should be hanging on the read, and not yet have returned.
- select {
- case err = <-cmdErr:
- AddFailure("Command returned early with error: %v", err)
- AbortTest()
- case <-time.After(10 * time.Millisecond):
- }
- // Send SIGINT.
- cmd.Process.Signal(os.Interrupt)
- // Now the command should return, with an appropriate error.
- err = <-cmdErr
- ExpectThat(err, Error(HasSubstr("signal")))
- ExpectThat(err, Error(HasSubstr("interrupt")))
- }
- func (t *InterruptFSTest) InterruptedDuringFlush() {
- var err error
- t.fs.EnableFlushBlocking()
- // Start a sub-process that attempts to read the file.
- cmd := exec.Command("cat", path.Join(t.Dir, "foo"))
- var cmdOutput bytes.Buffer
- cmd.Stdout = &cmdOutput
- cmd.Stderr = &cmdOutput
- err = cmd.Start()
- AssertEq(nil, err)
- // Wait for the command in the background, writing to a channel when it is
- // finished.
- cmdErr := make(chan error)
- go func() {
- cmdErr <- cmd.Wait()
- }()
- // Wait for the flush to make it to the file system.
- t.fs.WaitForFirstFlush()
- // The command should be hanging on the flush, and not yet have returned.
- select {
- case err = <-cmdErr:
- AddFailure("Command returned early with error: %v", err)
- AbortTest()
- case <-time.After(10 * time.Millisecond):
- }
- // Send SIGINT.
- cmd.Process.Signal(os.Interrupt)
- // Now the command should return, with an appropriate error.
- err = <-cmdErr
- ExpectThat(err, Error(HasSubstr("signal")))
- ExpectThat(err, Error(HasSubstr("interrupt")))
- }
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