overdue

.rclone_repo/cmd/mountlib/mounttest/read.go

@@ -0,0 +1,127 @@
+package mounttest
+
+import (
+	"io"
+	"io/ioutil"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// TestReadByByte reads by byte including don't read any bytes
+func TestReadByByte(t *testing.T) {
+	run.skipIfNoFUSE(t)
+
+	var data = []byte("hellohello")
+	run.createFile(t, "testfile", string(data))
+	run.checkDir(t, "testfile 10")
+
+	for i := 0; i < len(data); i++ {
+		fd, err := os.Open(run.path("testfile"))
+		assert.NoError(t, err)
+		for j := 0; j < i; j++ {
+			buf := make([]byte, 1)
+			n, err := io.ReadFull(fd, buf)
+			assert.NoError(t, err)
+			assert.Equal(t, 1, n)
+			assert.Equal(t, buf[0], data[j])
+		}
+		err = fd.Close()
+		assert.NoError(t, err)
+	}
+
+	time.Sleep(100 * time.Millisecond) // FIXME wait for Release
+	run.rm(t, "testfile")
+}
+
+// TestReadChecksum checks the checksum reading is working
+func TestReadChecksum(t *testing.T) {
+	run.skipIfNoFUSE(t)
+
+	// create file big enough so we exceed any single FUSE read
+	// request
+	b := make([]rune, 3*128*1024)
+	for i := range b {
+		b[i] = 'r'
+	}
+	run.createFile(t, "bigfile", string(b))
+
+	// The hash comparison would fail in Flush, if we did not
+	// ensure we read the whole file
+	fd, err := os.Open(run.path("bigfile"))
+	assert.NoError(t, err)
+	buf := make([]byte, 10)
+	_, err = io.ReadFull(fd, buf)
+	assert.NoError(t, err)
+	err = fd.Close()
+	assert.NoError(t, err)
+
+	// The hash comparison would fail, because we only read parts
+	// of the file
+	fd, err = os.Open(run.path("bigfile"))
+	assert.NoError(t, err)
+	// read at start
+	_, err = io.ReadFull(fd, buf)
+	assert.NoError(t, err)
+	// read at end
+	_, err = fd.Seek(int64(len(b)-len(buf)), io.SeekStart)
+	assert.NoError(t, err)
+	_, err = io.ReadFull(fd, buf)
+	assert.NoError(t, err)
+	// ensure we don't compare hashes
+	err = fd.Close()
+	assert.NoError(t, err)
+
+	run.rm(t, "bigfile")
+}
+
+// TestReadSeek test seeking
+func TestReadSeek(t *testing.T) {
+	run.skipIfNoFUSE(t)
+
+	var data = []byte("helloHELLO")
+	run.createFile(t, "testfile", string(data))
+	run.checkDir(t, "testfile 10")
+
+	fd, err := os.Open(run.path("testfile"))
+	assert.NoError(t, err)
+
+	// Seek to half way
+	_, err = fd.Seek(5, io.SeekStart)
+	assert.NoError(t, err)
+
+	buf, err := ioutil.ReadAll(fd)
+	assert.NoError(t, err)
+	assert.Equal(t, buf, []byte("HELLO"))
+
+	// Test seeking to the end
+	_, err = fd.Seek(10, io.SeekStart)
+	assert.NoError(t, err)
+
+	buf, err = ioutil.ReadAll(fd)
+	assert.NoError(t, err)
+	assert.Equal(t, buf, []byte(""))
+
+	// Test seeking beyond the end
+	_, err = fd.Seek(1000000, io.SeekStart)
+	assert.NoError(t, err)
+
+	buf, err = ioutil.ReadAll(fd)
+	assert.NoError(t, err)
+	assert.Equal(t, buf, []byte(""))
+
+	// Now back to the start
+	_, err = fd.Seek(0, io.SeekStart)
+	assert.NoError(t, err)
+
+	buf, err = ioutil.ReadAll(fd)
+	assert.NoError(t, err)
+	assert.Equal(t, buf, []byte("helloHELLO"))
+
+	err = fd.Close()
+	assert.NoError(t, err)
+
+	run.rm(t, "testfile")
+}