add test_methodcaller

Author: linjing-lab

test_methodcaller.py

@@ -0,0 +1,28 @@
+import math
+import sortingx
+from operator import methodcaller
+
+class Point:
+	def __init__(self, a, b, c, d):
+		self.a = a
+		self.b = b
+		self.c = c
+		self.d = d
+	def __repr__(self):
+		return 'Point({!r:},{!r:},{!r:},{!r:})'.format(self.a, self.b, self.c, self.d)
+	def distance(self, a, b, c, d):
+		return math.hypot(self.a - a, self.b - b, self.c - c, self.d - d)
+
+points = [
+	Point(1, 2, 3, 4),
+	Point(1, -1, 1, -1),
+	Point(3, 0, -2, 1),
+	Point(2, -2, 3, 2),
+	Point(-1, 2, 0, 1),
+	Point(1, 1, 1, 1),
+	Point(-2, -1, -3, 0),
+	Point(2, 0, 1, 1),
+	Point(1, -3, -2, -1)
+]
+
+print(sortingx.heap(points, key=methodcaller('distance', 0, 0, 0, 0)))