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|
package xmlquery
import (
"bufio"
"bytes"
"strings"
"testing"
)
func TestCaching(t *testing.T) {
buf := strings.NewReader(`ABCDEF`)
bufReader := bufio.NewReader(buf)
cachedReader := newCachedReader(bufReader)
b, err := cachedReader.ReadByte()
if err != nil {
t.Fatal(err.Error())
}
if b != 'A' {
t.Fatalf("Expected read byte to be A, got %c instead.", b)
}
cachedReader.StartCaching()
tmpBuf := make([]byte, 10)
n, err := cachedReader.Read(tmpBuf)
if err != nil {
t.Fatal(err.Error())
}
if n != 5 {
t.Fatalf("Expected 5 bytes to be read. Got %d instead.", n)
}
if !bytes.Equal(tmpBuf[:n], []byte("BCDEF")) {
t.Fatalf("Incorrect read buffer value")
}
cached := cachedReader.Cache()
if !bytes.Equal(cached, []byte("BCDEF")) {
t.Fatalf("Incorrect cached buffer value")
}
cached = cachedReader.CacheWithLimit(-1)
if cached != nil {
t.Fatalf("Incorrect cached buffer value")
}
cached = cachedReader.CacheWithLimit(3)
if !bytes.Equal(cached, []byte("BCD")) {
t.Fatalf("Incorrect cached buffer value")
}
cached = cachedReader.CacheWithLimit(1000)
if !bytes.Equal(cached, []byte("BCDEF")) {
t.Fatalf("Incorrect cached buffer value")
}
}
|
