Added test for STEP files generation

tests/test_plot/test_step.py

@@ -0,0 +1,30 @@
+"""
+Tests of Printing Schematic files
+
+We test:
+- STEP for bom.kicad_pcb
+
+For debug information use:
+pytest-3 --log-cli-level debug
+
+"""
+
+import os
+import sys
+# Look for the 'utils' module from where the script is running
+script_dir = os.path.dirname(os.path.abspath(__file__))
+sys.path.insert(0, os.path.dirname(script_dir))
+# Utils import
+from utils import context
+
+STEP_DIR = '3D'
+#STEP_FILE = 'bom.step'
+
+
+def test_step_1():
+    prj = 'bom'
+    ctx = context.TestContext('STEP_1', prj, 'step_simple', STEP_DIR)
+    ctx.run()
+    # Check all outputs are there
+    ctx.expect_out_file(os.path.join(STEP_DIR, prj+'.step'))
+    ctx.clean_up()