Add csv test data file

data/test_data.csv

@@ -0,0 +1,16 @@
+0,1,2,3,4
+6.1,2.8,4.7,1.2,1
+5.7,3.8,1.7,0.3,0
+7.7,2.6,6.9,2.3,2
+6.0,2.9,4.5,1.5,1
+6.8,2.8,4.8,1.4,1
+5.4,3.4,1.5,0.4,0
+5.6,2.9,3.6,1.3,1
+6.9,3.1,5.1,2.3,2
+6.2,2.2,4.5,1.5,1
+5.8,2.7,3.9,1.2,1
+6.5,3.2,5.1,2.0,2
+4.8,3.0,1.4,0.1,0
+5.5,3.5,1.3,0.2,0
+4.9,3.1,1.5,0.1,0
+5.1,3.8,1.5,0.3,0