Added test for multi-part component.

Check it isn't repeated.

tests/board_samples/kibom-test-rep.sch

@@ -0,0 +1,74 @@
+EESchema Schematic File Version 4
+EELAYER 30 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 1 1
+Title "KiBom Test Schematic"
+Date "2020-03-12"
+Rev "A"
+Comp "https://github.com/SchrodingersGat/KiBom"
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+Text Notes 550  950  0    50   ~ 0
+This schematic serves as a test-file for the KiBom export script.\n\nAfter making a change to the schematic, remember to re-export the BOM to generate the intermediate .xml file\n\n(The testing framework cannot perform the netlist-export step!)
+$Comp
+L 74xx:74LS02 U1
+U 1 1 5F32DAD4
+P 2500 2000
+F 0 "U1" H 2500 2325 50  0000 C CNN
+F 1 "74LS02" H 2500 2234 50  0000 C CNN
+F 2 "" H 2500 2000 50  0001 C CNN
+F 3 "http://www.ti.com/lit/gpn/sn74ls02" H 2500 2000 50  0001 C CNN
+	1    2500 2000
+	1    0    0    -1  
+$EndComp
+$Comp
+L 74xx:74LS02 U1
+U 2 1 5F32F3E6
+P 3350 2000
+F 0 "U1" H 3350 2325 50  0000 C CNN
+F 1 "74LS02" H 3350 2234 50  0000 C CNN
+F 2 "" H 3350 2000 50  0001 C CNN
+F 3 "http://www.ti.com/lit/gpn/sn74ls02" H 3350 2000 50  0001 C CNN
+	2    3350 2000
+	1    0    0    -1  
+$EndComp
+$Comp
+L 74xx:74LS02 U1
+U 3 1 5F3307F3
+P 2500 2650
+F 0 "U1" H 2500 2975 50  0000 C CNN
+F 1 "74LS02" H 2500 2884 50  0000 C CNN
+F 2 "" H 2500 2650 50  0001 C CNN
+F 3 "http://www.ti.com/lit/gpn/sn74ls02" H 2500 2650 50  0001 C CNN
+	3    2500 2650
+	1    0    0    -1  
+$EndComp
+$Comp
+L 74xx:74LS02 U1
+U 4 1 5F3307FD
+P 3350 2650
+F 0 "U1" H 3350 2975 50  0000 C CNN
+F 1 "74LS02" H 3350 2884 50  0000 C CNN
+F 2 "" H 3350 2650 50  0001 C CNN
+F 3 "http://www.ti.com/lit/gpn/sn74ls02" H 3350 2650 50  0001 C CNN
+	4    3350 2650
+	1    0    0    -1  
+$EndComp
+$Comp
+L 74xx:74LS02 U1
+U 5 1 5F336BFF
+P 2900 3600
+F 0 "U1" H 3130 3646 50  0000 L CNN
+F 1 "74LS02" H 3130 3555 50  0000 L CNN
+F 2 "" H 2900 3600 50  0001 C CNN
+F 3 "http://www.ti.com/lit/gpn/sn74ls02" H 2900 3600 50  0001 C CNN
+F 4 "" H 2900 3600 50  0001 C CNN "Config"
+	5    2900 3600
+	1    0    0    -1  
+$EndComp
+$EndSCHEMATC

tests/test_plot/test_int_bom.py

@@ -524,3 +524,16 @@ def test_int_bom_no_group_csv():
     check_kibom_test_netlist(rows, ref_column, len(KIBOM_TEST_COMPONENTS), KIBOM_TEST_EXCLUDE, KIBOM_TEST_COMPONENTS)
     check_dnc(rows, 'R7', ref_column, qty_column)
     ctx.clean_up()
+
+
+def test_int_bom_repeat_csv():
+    """ Multipart component """
+    prj = 'kibom-test-rep'
+    ext = 'csv'
+    ctx = context.TestContextSCH('test_int_bom_repeat_csv', prj, 'int_bom_simple_csv', BOM_DIR)
+    ctx.run()
+    out = prj + '-bom.' + ext
+    rows, header = ctx.load_csv(out)
+    assert header == KIBOM_TEST_HEAD
+    check_kibom_test_netlist(rows, header.index(REF_COLUMN_NAME), 1, [], ['U1'])
+    ctx.clean_up()