diff --git a/client/line_test.go b/client/line_test.go
new file mode 100644
index 0000000..582d83a
--- /dev/null
+++ b/client/line_test.go
@@ -0,0 +1,42 @@
+package client
+
+import (
+	"testing"
+)
+
+func TestCopy(t *testing.T) {
+	l1 := &Line{
+		Nick: "nick",
+		Ident: "ident",
+		Host: "host",
+		Src: "src",
+		Cmd: "cmd",
+		Raw: "raw",
+		Args: []string{"arg", "text"},
+		Time: nil,
+	}
+
+	l2 := l1.Copy()
+
+	// Ugly. Couldn't be bothered to bust out reflect and actually think.
+	if l2.Nick != "nick" || l2.Ident != "ident" || l2.Host != "host" ||
+		l2.Src != "src" || l2.Cmd != "cmd" || l2.Raw != "raw" ||
+		l2.Args[0] != "arg" || l2.Args[1] != "text" {
+		t.Errorf("Line not copied correctly")
+		t.Errorf("l1: %#v\nl2: %#v", l1, l2)
+	}
+
+	// Now, modify l2 and verify l1 not changed
+	l2.Nick = l2.Nick[1:]
+	l2.Ident = "foo"
+	l2.Host = ""
+	l2.Args[0] = l2.Args[0][1:]
+	l2.Args[1] = "bar"
+
+	if l1.Nick != "nick" || l1.Ident != "ident" || l1.Host != "host" ||
+		l1.Src != "src" || l1.Cmd != "cmd" || l1.Raw != "raw" ||
+		l1.Args[0] != "arg" || l1.Args[1] != "text" {
+		t.Errorf("Original modified when copy changed")
+		t.Errorf("l1: %#v\nl2: %#v", l1, l2)
+	}
+}