1 files changed, 43 insertions, 0 deletions
diff --git a/src/crypto/rand/rand_test.go b/src/crypto/rand/rand_test.go
new file mode 100644
index 0000000..e45f58e
--- /dev/null
+++ b/src/crypto/rand/rand_test.go
@@ -0,0 +1,43 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package rand
+
+import (
+	"bytes"
+	"compress/flate"
+	"io"
+	"testing"
+)
+
+func TestRead(t *testing.T) {
+	var n int = 4e6
+	if testing.Short() {
+		n = 1e5
+	}
+	b := make([]byte, n)
+	n, err := io.ReadFull(Reader, b)
+	if n != len(b) || err != nil {
+		t.Fatalf("ReadFull(buf) = %d, %s", n, err)
+	}
+
+	var z bytes.Buffer
+	f, _ := flate.NewWriter(&z, 5)
+	f.Write(b)
+	f.Close()
+	if z.Len() < len(b)*99/100 {
+		t.Fatalf("Compressed %d -> %d", len(b), z.Len())
+	}
+}
+
+func TestReadEmpty(t *testing.T) {
+	n, err := Reader.Read(make([]byte, 0))
+	if n != 0 || err != nil {
+		t.Fatalf("Read(make([]byte, 0)) = %d, %v", n, err)
+	}
+	n, err = Reader.Read(nil)
+	if n != 0 || err != nil {
+		t.Fatalf("Read(nil) = %d, %v", n, err)
+	}
+}