Python: matrix is added

python/matrix/matrix_test.py

@@ -0,0 +1,43 @@
+import unittest
+
+from matrix import Matrix
+
+# Tests adapted from `problem-specifications//canonical-data.json`
+
+
+class MatrixTest(unittest.TestCase):
+    def test_extract_row_from_one_number_matrix(self):
+        matrix = Matrix("1")
+        self.assertEqual(matrix.row(1), [1])
+
+    def test_can_extract_row(self):
+        matrix = Matrix("1 2\n3 4")
+        self.assertEqual(matrix.row(2), [3, 4])
+
+    def test_extract_row_where_numbers_have_different_widths(self):
+        matrix = Matrix("1 2\n10 20")
+        self.assertEqual(matrix.row(2), [10, 20])
+
+    def test_can_extract_row_from_non_square_matrix_with_no_corresponding_column(self):
+        matrix = Matrix("1 2 3\n4 5 6\n7 8 9\n8 7 6")
+        self.assertEqual(matrix.row(4), [8, 7, 6])
+
+    def test_extract_column_from_one_number_matrix(self):
+        matrix = Matrix("1")
+        self.assertEqual(matrix.column(1), [1])
+
+    def test_can_extract_column(self):
+        matrix = Matrix("1 2 3\n4 5 6\n7 8 9")
+        self.assertEqual(matrix.column(3), [3, 6, 9])
+
+    def test_can_extract_column_from_non_square_matrix_with_no_corresponding_row(self):
+        matrix = Matrix("1 2 3 4\n5 6 7 8\n9 8 7 6")
+        self.assertEqual(matrix.column(4), [4, 8, 6])
+
+    def test_extract_column_where_numbers_have_different_widths(self):
+        matrix = Matrix("89 1903 3\n18 3 1\n9 4 800")
+        self.assertEqual(matrix.column(2), [1903, 3, 4])
+
+
+if __name__ == "__main__":
+    unittest.main()