added local maxima function

hands_on/local_maxima/test_local_maxima.py

@@ -0,0 +1,41 @@
+from local_maxima import find_maxima
+
+
+
+def test_local_maxima_empty():
+    value = []
+    expected = []
+
+    result = find_maxima(value)
+
+    assert result == expected
+
+
+def test_local_maxima_plateau():
+    value = [1, 2, 2, 1]
+    expected = []
+
+    result = find_maxima(value)
+
+    assert result == expected
+
+def test_local_maxima_array1():
+    value = [1, 3, 5, 2, 1]
+    expected = [2]
+
+    result = find_maxima(value)
+
+    assert result == expected
+
+
+def test_local_maxima_array2():
+    value = [5, 4, 4, 5]
+    expected = []
+
+    result = find_maxima(value)
+
+    assert result == expected
+
+
+
+