Initial Refactoring of yoshi_otter and Test Implementation

tests/algebra/roots/test_roots.py

@@ -0,0 +1,38 @@
+import unittest
+
+from yoshi_otter.algebra.roots import Roots
+
+
+class TestRoots(unittest.TestCase):
+
+    def setUp(self):
+        def f(x):
+            return x
+
+        self.f = f
+
+    def test_class_instantiation(self):
+        roots = Roots(self.f)
+        self.assertIsInstance(roots, Roots)
+
+    def test_bissec(self):
+        roots = Roots(self.f)
+        result = roots.bissec(-1, 1)
+
+        self.assertAlmostEqual(result, 0, 6)
+
+    def test_newton(self):
+        roots = Roots(self.f)
+        result = roots.newton(-1)
+
+        self.assertAlmostEqual(result, 0, 6)
+
+    def test_bissec_newton(self):
+        roots = Roots(self.f)
+        result = roots.bissec_newton(-1, 1)
+
+        self.assertAlmostEqual(result, 0, 6)
+
+
+if __name__ == '__main__':
+    unittest.main()