diff --git a/test/test_all.scad b/test/test_all.scad
index 93a026a9..cb01c0b5 100644
--- a/test/test_all.scad
+++ b/test/test_all.scad
@@ -23,6 +23,8 @@ include <test_bend.scad>;
 include <test_rotate_p.scad>;
 include <test_paths2sections.scad>;
 include <test_sub_str.scad>;
+include <test_split_str.scad>;
+include <test_parse_number.scad>;
 
 // 2D Shape
 include <test_shape_arc.scad>;
diff --git a/test/test_parse_number.scad b/test/test_parse_number.scad
new file mode 100644
index 00000000..324c6c09
--- /dev/null
+++ b/test/test_parse_number.scad
@@ -0,0 +1,7 @@
+include <unittest.scad>;
+include <sub_str.scad>;
+include <split_str.scad>;
+include <parse_number.scad>;
+
+assertEqual(11, parse_number("10") + 1);   
+assertEqual(-0.1, parse_number("-1.1") + 1);  
diff --git a/test/test_split_str.scad b/test/test_split_str.scad
new file mode 100644
index 00000000..414c4ab2
--- /dev/null
+++ b/test/test_split_str.scad
@@ -0,0 +1,5 @@
+include <unittest.scad>;
+include <sub_str.scad>;
+include <split_str.scad>;
+
+assertEqual(["hello", "world"], split_str("hello,world", ","));  
\ No newline at end of file