Add unit testing for uploading invalid BOM files

InvenTree/part/test_bom_import.py

@@ -0,0 +1,145 @@
+"""
+Unit testing for BOM upload / import functionality
+"""
+
+import tablib
+
+from django.core.files.uploadedfile import SimpleUploadedFile
+from django.urls import reverse
+
+from InvenTree.api_tester import InvenTreeAPITestCase
+
+from part.models import Part
+
+
+class BomUploadTest(InvenTreeAPITestCase):
+    """
+    Test BOM file upload API endpoint
+    """
+
+    roles = [
+        'part.add',
+        'part.change',
+    ]
+
+    def setUp(self):
+        super().setUp()
+
+        self.part = Part.objects.create(
+            name='Assembly',
+            description='An assembled part',
+            assembly=True,
+        )
+
+        self.url = reverse('api-bom-extract')
+
+    def post_bom(self, filename, file_data, part=None, clear_existing=None, expected_code=None, content_type='text/plain'):
+
+        bom_file = SimpleUploadedFile(
+            filename,
+            file_data,
+            content_type=content_type,
+        )
+
+        if part is None:
+            part = self.part.pk
+
+        if clear_existing is None:
+            clear_existing = False
+
+        response = self.post(
+            self.url,
+            data={
+                'bom_file': bom_file,
+                'part': part,
+                'clear_existing': clear_existing,
+            },
+            expected_code=expected_code,
+            format='multipart',
+        )
+
+        return response
+
+    def test_missing_file(self):
+        """
+        POST without a file
+        """
+
+        response = self.post(
+            self.url,
+            data={},
+            expected_code=400
+        )
+
+        self.assertIn('No file was submitted', str(response.data['bom_file']))
+        self.assertIn('This field is required', str(response.data['part']))
+        self.assertIn('This field is required', str(response.data['clear_existing']))
+
+    def test_unsupported_file(self):
+        """
+        POST with an unsupported file type
+        """
+
+        response = self.post_bom(
+            'sample.txt',
+            b'hello world',
+            expected_code=400,
+        )
+
+        self.assertIn('Unsupported file type', str(response.data['bom_file']))
+
+    def test_broken_file(self):
+        """
+        Test upload with broken (corrupted) files
+        """
+
+        response = self.post_bom(
+            'sample.csv',
+            b'',
+            expected_code=400,
+        )
+
+        self.assertIn('The submitted file is empty', str(response.data['bom_file']))
+
+        response = self.post_bom(
+            'test.xls',
+            b'hello world',
+            expected_code=400,
+            content_type='application/xls',
+        )
+
+        self.assertIn('Unsupported format, or corrupt file', str(response.data['bom_file']))
+
+    def test_invalid_upload(self):
+        """
+        Test upload of an invalid file
+        """
+
+        dataset = tablib.Dataset()
+
+        dataset.headers = [
+            'apple',
+            'banana',
+        ]
+
+        dataset.append(['test', 'test'])
+        dataset.append(['hello', 'world'])
+
+        response = self.post_bom(
+            'test.csv',
+            bytes(dataset.csv, 'utf8'),
+            expected_code=400,
+            content_type='text/csv',
+        )
+
+        self.assertIn("Missing required column: 'quantity'", str(response.data))
+
+        # Try again, with an .xlsx file
+        response = self.post_bom(
+            'bom.xlsx',
+            dataset.xlsx,
+            content_type='application/xlsx',
+            expected_code=400,
+        )
+
+        self.assertIn("Missing required column: 'quantity'", str(response.data))