[Tests][Added][Populate] Use of Blender as renderer

tests/data/plain_html_simple.md

@@ -0,0 +1,15 @@
+# Demo population manual
+
+Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Itaque earum rerum hic
+tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias
+consequatur aut perferendis doloribus asperiores repellat. Vestibulum fermentum
+tortor id mi. Nulla turpis magna, cursus sit amet, suscipit a, interdum id,
+felis.
+
+- [[front | ]] This is the front side of the board we are populating
+- [[front | RV1, RV2 ]] First, populate RV1 and RV2. Basically, any description
+  could be here.
+
+## Conclusion
+
+This is the end of the demo.

tests/test_plot/test_misc.py

@@ -1833,6 +1833,17 @@ def test_populate_1(test_dir):
     ctx.clean_up()
 
 
+@pytest.mark.slow
+@pytest.mark.skipif(not context.ki7(), reason="Just testing with 7")
+def test_populate_2(test_dir):
+    prj = 'simple_2layer'  # Fake
+    ctx = context.TestContext(test_dir, prj, 'populate_blender', 'PopulateSimple')
+    ctx.run(no_board_file=True, extra=['-b', 'tests/data/ArduinoLearningKitStarter.kicad_pcb'])
+    ctx.expect_out_file_d(['img/populating_1.png', 'img/populating_2.png',
+                           'ArduinoLearningKitStarter-blender_export.pcb3d', 'index.html'])
+    ctx.clean_up()
+
+
 @pytest.mark.slow
 @pytest.mark.skipif(not context.ki7(), reason="Just testing with 7")
 def test_present_1(test_dir):

tests/yaml_samples/populate_blender.kibot.yaml

@@ -0,0 +1,25 @@
+kiplot:
+  version: 1
+
+outputs:
+  - name: Blender
+    comment: "How to draw a step"
+    type: blender_export
+    run_by_default: false
+    options:
+      render_options:
+        transparent_background: true
+        samples: 5
+      point_of_view:
+        rotate_x: 30
+        rotate_z: -20
+      outputs:
+        - type: render
+
+  - name: Populate
+    comment: "Populate example"
+    type: populate
+    dir: PopulateSimple
+    options:
+      renderer: Blender
+      input: tests/data/plain_html_simple.md