Gauss implementation

tests.py

@@ -0,0 +1,45 @@
+import unittest
+from algo import gauss_method
+
+class TestGaussMethod(unittest.TestCase):
+    def test_2x2_unique_solution(self):
+        """Простейшая 2x2 система с уникальным решением"""
+        coef = [[1, 1],
+                [2, 3]]
+        free_mem = [5, 11]
+        result = gauss_method(coef, free_mem)
+        expected = [4.0, 1.0]
+        for r, e in zip(result, expected):
+            self.assertAlmostEqual(r, e, places=7)
+
+    def test_2x2_another(self):
+        """Ещё одна 2x2 система"""
+        coef = [[2, 1],
+                [4, 3]]
+        free_mem = [5, 11]
+        result = gauss_method(coef, free_mem)
+        expected = [2.0, 1.0]
+        for r, e in zip(result, expected):
+            self.assertAlmostEqual(r, e, places=7)
+
+    def test_3x3_unique_solution(self):
+        """3x3 система с уникальным решением"""
+        coef = [[1, 1, 1],
+                [2, 3, 1],
+                [1, 2, 3]]
+        free_mem = [6, 11, 14]
+        result = gauss_method(coef, free_mem)
+        expected = [1.0, 2.0, 3.0]
+        for r, e in zip(result, expected):
+            self.assertAlmostEqual(r, e, places=7)
+
+    def test_degenerate_system(self):
+        """Вырожденная система должна выбросить исключение"""
+        coef = [[1, 1],
+                [2, 2]]
+        free_mem = [2, 4]
+        with self.assertRaises(ValueError):
+            gauss_method(coef, free_mem)
+
+if __name__ == "__main__":
+    unittest.main()