diff -r 310be640a303 -r c82943fb205f printrun-src/testfiles/layer-detect.gcode
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/printrun-src/testfiles/layer-detect.gcode	Tue Jan 19 20:45:09 2021 +0100
@@ -0,0 +1,28 @@
+; Print this file to see the parsed layers
+; This file contains lines from https://github.com/kliment/Printrun/pull/1069#issuecomment-692127342
+; Interesting points:
+; Are layers snapped (merged,disappear) to near ones?
+; Are layers z coordinates modified?
+; Are layers without extrusion snapped to previous?
+; Handling of last layer - is extrusion respected?
+
+G1 Z5 ; lift nozzle
+
+G1 Z0.200 ; move to next layer (0)
+G0 Y1
+G1 X100 E1
+G1 Z0.203 ; move to next layer (1)
+G0 X1
+G1 X100 E2
+G1 Z0.300 ; move to next layer (2)
+G0 X1
+G1 X100 E3
+G1 Z0.398 ; move to next layer (3)
+G0 X1
+G1 X100 E4
+G1 Z0.458 ; move to next layer (4)
+G0 X1
+G1 X100 E5
+G1 Z0.503 ; move to next layer (5)
+
+;@!print([l.z for l in self.fgcode.all_layers])