diff --git a/editor/document/row_test.go b/editor/document/row_test.go
index ccdfb6d..b9e448f 100644
--- a/editor/document/row_test.go
+++ b/editor/document/row_test.go
@@ -2,21 +2,23 @@ package document
 
 import "testing"
 
+var doc = NewDocument()
+
 func TestNewRow(t *testing.T) {
 	str := "abcdefg"
-	row := newRow(str)
+	row := newRow(doc, str)
 
 	got := string(row.chars)
 	want := str
 
 	if got != want {
-		t.Errorf("Row chars not equal to original string. Row: %q, String: %q", row, str)
+		t.Errorf("Row chars not equal to original string. Row: %q, String: %q", row.chars, str)
 	}
 }
 
 func TestRowSize(t *testing.T) {
 	str := "abcdefg"
-	row := newRow(str)
+	row := newRow(doc, str)
 
 	got := row.Size()
 	want := 7
@@ -28,7 +30,7 @@ func TestRowSize(t *testing.T) {
 
 func TestRenderSize(t *testing.T) {
 	str := "\tabcdefg"
-	row := newRow(str)
+	row := newRow(doc, str)
 	row.update()
 
 	got := row.RenderSize()
@@ -55,7 +57,7 @@ var insertRuneTests = []insertRune{
 
 func TestInsertRune(t *testing.T) {
 	for _, test := range insertRuneTests {
-		row := newRow(test.initial)
+		row := newRow(doc, test.initial)
 		row.insertRune(test.ch, test.at)
 
 		if row.Size() != 5 {