Add pembody, mwc tests.

mwc/mwc_test.go

@@ -0,0 +1,27 @@
+package mwc
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/kisom/testio"
+)
+
+func TestMWC(t *testing.T) {
+	buf1 := testio.NewBufCloser(nil)
+	buf2 := testio.NewBufCloser(nil)
+
+	mwc := MultiWriteCloser(buf1, buf2)
+
+	if _, err := mwc.Write([]byte("hello, world")); err != nil {
+		t.Fatalf("%v", err)
+	}
+
+	if !bytes.Equal(buf1.Bytes(), buf2.Bytes()) {
+		t.Fatal("write failed")
+	}
+
+	if !bytes.Equal(buf1.Bytes(), []byte("hello, world")) {
+		t.Fatal("writing failed")
+	}
+}