--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/mini.data.factor.tsv	Thu Jul 11 13:31:20 2019 -0400
@@ -0,0 +1,101 @@
+cell.id	factor
+V1	a
+V2	a
+V3	a
+V4	a
+V5	a
+V6	a
+V7	a
+V8	b
+V9	b
+V10	b
+V11	b
+V12	b
+V13	b
+V14	b
+V15	c
+V16	c
+V17	c
+V18	c
+V19	c
+V20	c
+V21	a
+V22	a
+V23	a
+V24	a
+V25	a
+V26	a
+V27	a
+V28	b
+V29	b
+V30	b
+V31	b
+V32	b
+V33	b
+V34	b
+V35	c
+V36	c
+V37	c
+V38	c
+V39	c
+V40	c
+V41	a
+V42	a
+V43	a
+V44	a
+V45	a
+V46	a
+V47	a
+V48	b
+V49	b
+V50	b
+V51	b
+V52	b
+V53	b
+V54	b
+V55	c
+V56	c
+V57	c
+V58	c
+V59	c
+V60	c
+V61	a
+V62	a
+V63	a
+V64	a
+V65	a
+V66	a
+V67	a
+V68	b
+V69	b
+V70	b
+V71	b
+V72	b
+V73	b
+V74	b
+V75	c
+V76	c
+V77	c
+V78	c
+V79	c
+V80	c
+V81	a
+V82	a
+V83	a
+V84	a
+V85	a
+V86	a
+V87	a
+V88	b
+V89	b
+V90	b
+V91	b
+V92	b
+V93	b
+V94	b
+V95	c
+V96	c
+V97	c
+V98	c
+V99	c
+V100	c