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// +build ignore
package main
import (
"fmt"
"log"
"testing"
"github.com/cespare/xxhash/v2"
)
const (
in = "Call me Ishmael. Some years ago--never mind how long precisely-"
want = 0x02a2e85470d6fd96
)
func TestSum(t *testing.T) {
got := xxhash.Sum64String(in)
if got != want {
t.Fatalf("Sum64String: got 0x%x; want 0x%x", got, want)
}
}
func TestDigest(t *testing.T) {
for chunkSize := 1; chunkSize <= len(in); chunkSize++ {
name := fmt.Sprintf("[chunkSize=%d]", chunkSize)
t.Run(name, func(t *testing.T) {
d := xxhash.New()
for i := 0; i < len(in); i += chunkSize {
chunk := in[i:]
if len(chunk) > chunkSize {
chunk = chunk[:chunkSize]
}
n, err := d.WriteString(chunk)
if err != nil || n != len(chunk) {
t.Fatalf("Digest.WriteString: got (%d, %v); want (%d, nil)",
n, err, len(chunk))
}
}
if got := d.Sum64(); got != want {
log.Fatalf("Digest.Sum64: got 0x%x; want 0x%x", got, want)
}
})
}
}
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