Added test for invalid column name

tests/test_plot/test_yaml_errors.py

@@ -512,3 +512,10 @@ def test_error_int_bom_unknown_style():
     ctx.run(EXIT_BAD_CONFIG)
     assert ctx.search_err("Unknown style .?bogus.?")
     ctx.clean_up()
+
+
+def test_error_int_bom_invalid_col():
+    ctx = context.TestContextSCH('test_error_int_bom_invalid_col', 'links', 'error_int_bom_invalid_col', '')
+    ctx.run(EXIT_BAD_CONFIG)
+    assert ctx.search_err("Invalid column name")
+    ctx.clean_up()

tests/yaml_samples/error_int_bom_invalid_col.kiplot.yaml

@@ -0,0 +1,22 @@
+# Example KiPlot config file
+kiplot:
+  version: 1
+
+outputs:
+  - name: 'bom_internal'
+    comment: "Bill of Materials in CSV format"
+    type: bom
+    dir: BoM
+    options:
+      columns:
+        - field: Rowenta
+          name: Renglón
+        - field: Part
+          name: Componente
+        - field: Value
+          name: Valor
+        - field: digikey#
+          name: Código Digi-Key
+        - field: Quantity Per PCB
+          name: Cantidad por PCB
+