init: v1.0.0

grand/rand_test.go

@@ -0,0 +1,61 @@
+package grand_test
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+
+	"xdx.jelly/xgcl/grand"
+)
+
+func TestRandZero(t *testing.T) {
+	randReader := grand.ReaderZero
+	buf := make([]byte, 100)
+	n, err := randReader.Read(buf)
+	if err != nil || n != 100 {
+		t.Log(n, err)
+		t.Fail()
+	}
+}
+
+func TestRandFromBytes(t *testing.T) {
+	buf := make([]byte, 100)
+	_, _ = grand.ReaderOne.Read(buf)
+	fmt.Println(buf)
+	randReader := bytes.NewReader(buf)
+
+	buf2 := make([]byte, 51)
+	n, err := randReader.Read(buf2)
+	fmt.Println(n, err, buf2)
+	if err != nil || n != len(buf2) {
+		t.Log(n, err)
+		t.Fail()
+	}
+	for _, b := range buf2 {
+		if b != 1 {
+			t.Fail()
+		}
+	}
+
+	n, err = randReader.Read(buf2)
+	fmt.Println(n, err, buf2)
+	if err != nil || n != len(buf2) {
+		t.Log(n, err)
+		t.Fail()
+	}
+	for _, b := range buf2 {
+		if b != 1 {
+			t.Fail()
+		}
+	}
+
+}
+
+func TestInt(t *testing.T) {
+	for bits := 0; bits < 10000; bits++ {
+		n := grand.Int(bits)
+		if n.BitLen() != bits {
+			t.Fatalf("bits = %d, n = %x", bits, n)
+		}
+	}
+}