func TestStatementCachePrepare(t *testing.T) {
assert := assert.New(t)
sc := NewStatementCache(DefaultDb().Connection)
query := "select 'ok'"
stmt, err := sc.Prepare(query)
assert.Nil(err)
assert.NotNil(stmt)
assert.True(sc.HasStatement(query))
// shoul result in cache hit
stmt, err = sc.Prepare(query)
assert.NotNil(stmt)
assert.True(sc.HasStatement(query))
}
func TestDataFileReaderReadLine(t *testing.T) {
assert := assert.New(t)
fileBuffer := bytes.NewReader([]byte(`this is a test line
this is another test line
this is 3rd test line
this is a 4th test line
this is after a blank line
`))
dfr := &DataFileReader{}
var cursor int64
var readBuffer = make([]byte, 32)
var readErr error
var lineBuffer = bytes.NewBuffer([]byte{})
cursor, readErr = dfr.readLine(fileBuffer, cursor, readBuffer, lineBuffer)
assert.Nil(readErr)
assert.Equal(20, cursor)
assert.Equal(19, lineBuffer.Len())
assert.Equal("this is a test line", lineBuffer.String())
lineBuffer.Reset()
cursor, readErr = dfr.readLine(fileBuffer, cursor, readBuffer, lineBuffer)
assert.Nil(readErr)
assert.Equal(46, cursor)
assert.Equal(25, lineBuffer.Len())
assert.Equal("this is another test line", lineBuffer.String())
lineBuffer.Reset()
cursor, readErr = dfr.readLine(fileBuffer, cursor, readBuffer, lineBuffer)
assert.Nil(readErr)
assert.Equal(68, cursor)
assert.Equal(21, lineBuffer.Len())
assert.Equal("this is 3rd test line", lineBuffer.String())
lineBuffer.Reset()
cursor, readErr = dfr.readLine(fileBuffer, cursor, readBuffer, lineBuffer)
assert.Nil(readErr)
assert.Equal(92, cursor)
assert.Equal(23, lineBuffer.Len())
assert.Equal("this is a 4th test line", lineBuffer.String())
lineBuffer.Reset()
cursor, readErr = dfr.readLine(fileBuffer, cursor, readBuffer, lineBuffer)
assert.Nil(readErr, fmt.Sprintf("Total Buffer Len: %d, cusor: %d", fileBuffer.Len(), cursor))
assert.Equal(93, cursor)
assert.Equal(0, lineBuffer.Len())
assert.Empty(lineBuffer.String())
lineBuffer.Reset()
cursor, readErr = dfr.readLine(fileBuffer, cursor, readBuffer, lineBuffer)
assert.NotNil(readErr)
assert.Equal(io.EOF, readErr)
assert.Equal(120, cursor)
assert.Equal(26, lineBuffer.Len())
assert.Equal("this is after a blank line", lineBuffer.String())
}
func TestBufferPool(t *testing.T) {
assert := assert.New(t)
pool := NewBufferPool(1024)
buf := pool.Get()
assert.NotNil(buf)
pool.Put(buf)
}
func TestDataFileReaderReadLineSingleLine(t *testing.T) {
assert := assert.New(t)
fileBuffer := bytes.NewReader([]byte(`this is a test line`))
dfr := &DataFileReader{}
var cursor int64
var readBuffer = make([]byte, 32)
var readErr error
var lineBuffer = bytes.NewBuffer([]byte{})
cursor, readErr = dfr.readLine(fileBuffer, cursor, readBuffer, lineBuffer)
assert.NotNil(readErr)
assert.Equal(io.EOF, readErr)
assert.Equal(19, cursor)
assert.Equal(19, lineBuffer.Len())
assert.Equal("this is a test line", lineBuffer.String())
}
func TestDataFileReaderReadTabLine(t *testing.T) {
assert := assert.New(t)
fileBuffer := bytes.NewReader([]byte(`hello world 123 \N testing
1 2 3 4 5 6 7 8 9 10
this is a line that ends in a tab `))
dfr := &DataFileReader{}
var cursor int64
var readBuffer = make([]byte, 32)
var readErr error
var lineBuffer = bytes.NewBuffer([]byte{})
var pieces []interface{}
pieces, cursor, readErr = dfr.readTabLine(fileBuffer, cursor, readBuffer, lineBuffer)
assert.Nil(readErr)
assert.Len(pieces, 4, fmt.Sprintf("%#v", pieces))
assert.Equal("hello world", pieces[0])
assert.Equal("123", pieces[1])
assert.Nil(pieces[2])
lineBuffer.Reset()
pieces, cursor, readErr = dfr.readTabLine(fileBuffer, cursor, readBuffer, lineBuffer)
assert.Nil(readErr)
assert.Len(pieces, 10)
assert.Equal("1", pieces[0])
assert.Equal("10", pieces[9])
lineBuffer.Reset()
pieces, cursor, readErr = dfr.readTabLine(fileBuffer, cursor, readBuffer, lineBuffer)
assert.NotNil(readErr)
assert.Equal(io.EOF, readErr)
assert.Len(pieces, 1)
assert.Equal("this is a line that ends in a tab", pieces[0])
}