diff --git a/testcases/straight-speeds.gcode b/testcases/straight-speeds.gcode
index 6b3557d..77c6fc1 100644
--- a/testcases/straight-speeds.gcode
+++ b/testcases/straight-speeds.gcode
@@ -2,6 +2,8 @@
 (the look-ahead algorithm)
 G21
 G90
+G1 X5 F400
+G1 X0
 G1 X10 F200
 G1 X20 F400
 G1 X100 F1500
diff --git a/testcases/triangle.gcode b/testcases/triangle.gcode
new file mode 100644
index 0000000..9e7d002
--- /dev/null
+++ b/testcases/triangle.gcode
@@ -0,0 +1,9 @@
+(This is a test case for plotting scripts)
+G21
+G90
+G1 X5 F800
+G1 X0
+G1 X20
+G1 X40 Y20
+G1 X0 Y0
+M2