test(format): select_wrap respects commas setting

pkg/format/dml_test.go

@@ -694,3 +694,19 @@ func TestJoinWrap(t *testing.T) {
 		t.Errorf("when_long long should equal always")
 	}
 }
+
+func TestSelectWrapBrokenHonoursCommaStyle(t *testing.T) {
+	src := "select a, b, c from t"
+	st := config.Default()
+	st.SelectWrap = config.WrapWhenLong
+	st.LineWidth = 8
+	st.Commas = config.CommaTrailing
+	got := File(parser.Parse(src), st)
+	if !strings.Contains(got, " a,\n") || strings.Contains(got, "\n  ,b") {
+		t.Errorf("trailing commas expected when broken:\n%s", got)
+	}
+	st.Commas = config.CommaLeading
+	if got := File(parser.Parse(src), st); !strings.Contains(got, "\n  ,b") {
+		t.Errorf("leading commas expected when broken:\n%s", got)
+	}
+}