1 files changed, 33 insertions, 0 deletions
diff --git a/LimitedWriter_test.go b/LimitedWriter_test.go
new file mode 100644
index 0000000..5af9d71
--- /dev/null
+++ b/LimitedWriter_test.go
@@ -0,0 +1,33 @@
+package kagus
+
+import (
+	"bytes"
+	"testing"
+)
+
+func TestLimitedWriting(t *testing.T) {
+	buf := new(bytes.Buffer)
+	lw := &LimitedWriter{buf, 10}
+
+	if _, err := lw.Write([]byte{1, 2}); err != nil {
+		t.Fatalf("lw.Write failed: %s", err)
+	}
+
+	if lw.N != 8 {
+		t.Fatalf("lw.N was supposed to be 8, is %d", lw.N)
+	}
+
+	if !bytes.Equal(buf.Bytes(), []byte{1, 2}) {
+		t.Errorf("Unexpected content of buf: %v", buf.Bytes())
+	}
+
+	n, err := lw.Write([]byte{3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13})
+	if (n != 8) || (err != WriteLimitReached) {
+		t.Fatalf("lw.Write returned with unexpected n, err: %d, %s", n, err)
+	}
+
+	n, err = lw.Write([]byte("trololo"))
+	if (n != 0) || (err != WriteLimitReached) {
+		t.Fatalf("lw.Write returned with unexpected n, err: %d, %s", n, err)
+	}
+}