def testImpossible(self):
"""isNotTriangle should return True with impossible triangles [08ad593071aa995d]"""
# the length two of the sides of the triangle must be greater than the third side
# otherwise it is impossible to connect the three sides
t = [3, 6, 9];
result = triangle.isNotTriangle(t);
self.assertTrue(result);
t = [3, 6, 10];
result = triangle.isNotTriangle(t);
self.assertTrue(result);
t = [2, 6, 9];
result = triangle.isNotTriangle(t);
self.assertTrue(result);
def testNegative(self):
"""isNotTriangle should return True with negative inputs [f8868f9890e547f0]"""
# triangles can't have sides of negative length
t = [-5, 5, 5];
result = triangle.isNotTriangle(t);
self.assertTrue(result);
def testNotIsosceles(self):
"""isIsosceles should return False with not isosceles triangles [6bcd95296db8bd5c]"""
# this piggy backs off some code from testScalene, and is therefore incomplete
for i in range(10):
j = random.randint(2,10);
t = [j, j, j];
result = triangle.isNotTriangle(t);
self.assertFalse(result);
result = triangle.isIsosceles(t);
self.assertFalse(result);
t = [j, j+1, j+2];
result = triangle.isNotTriangle(t);
self.assertFalse(result);
result = triangle.isIsosceles(t);
self.assertFalse(result);
def testNotEqual(self):
"""isEquilateral should return False with inequal values [bb5f925639d15c1f]"""
random.seed();
for i in range(10):
j = random.randint(2,10);
t = [j, j, j+1];
result = triangle.isNotTriangle(t);
self.assertFalse(result);
result = triangle.isEquilateral(t);
self.assertFalse(result);
t = [j, j+1, j+2];
result = triangle.isNotTriangle(t);
self.assertFalse(result);
result = triangle.isEquilateral(t);
self.assertFalse(result);
def testNotScalene(self):
"""isScalene should return False with not scalene triangles [2e79614fb2af8162]"""
# another relevant test, but it suffers from the same problem as testScalene
random.seed();
for i in range(10):
j = random.randint(2,10);
t = [j, j, j];
result = triangle.isNotTriangle(t);
self.assertFalse(result);
result = triangle.isScalene(t);
self.assertFalse(result);
t = [j, j, j+1];
result = triangle.isNotTriangle(t);
self.assertFalse(result);
result = triangle.isScalene(t);
self.assertFalse(result);
def testZero(self):
"""isNotTriangle should return True with zero inputs [bcaa54a165bb7858]"""
# triangles can't have sides of length zero
random.seed();
for i in range(10):
j = random.randint(1,100);
t = [0, 0, 0];
result = triangle.isNotTriangle(t);
self.assertTrue(result);
t = [j, 0, 0];
result = triangle.isNotTriangle(t);
self.assertTrue(result);
t = [j, j, 0];
result = triangle.isNotTriangle(t);
self.assertTrue(result);
t = [0, j, j];
result = triangle.isNotTriangle(t);
self.assertTrue(result);
t = [0, j, 0];
result = triangle.isNotTriangle(t);
self.assertTrue(result);
t = [0, 0, j];
result = triangle.isNotTriangle(t);
self.assertTrue(result);
def testEqual(self):
"""isEquilateral should return True with equal values [f769dfadbe9d3afd]"""
# equilateral triangles have three sides of equal length
random.seed();
for i in range(10):
j = random.randint(2,10);
t = [j, j, j];
result = triangle.isNotTriangle(t);
self.assertFalse(result);
result = triangle.isEquilateral(t);
self.assertTrue(result);
def testIsosceles(self):
"""isIsoscles should return True with isosceles triangles [816d8bb3fdd27f88]"""
# This is another limited test
random.seed();
for i in range(10):
j = random.randint(2,10);
t = [j, j, j+1];
result = triangle.isNotTriangle(t);
self.assertFalse(result);
result = triangle.isIsosceles(t);
self.assertTrue(result);
def testScalene(self):
"""isScalene should return True with scalene triangles [bc8859b03e2bc0fa]"""
# this is a relevant test, but it does not adequately test the function
# there are many more possible combinations of inputs
random.seed();
for i in range(10):
j = random.randint(2,10);
t = [j, j+1, j+2];
result = triangle.isNotTriangle(t);
self.assertFalse(result);
result = triangle.isScalene(t);
self.assertTrue(result);
def testRight(self):
"""isRight should return True with right triangles [a9dd9066a3c456dd]"""
# I use pythagorean triples here, since each side is an integer
# given 2 ints m, n
# a = 2mn : b = m**2 - n**2 : c = m**2 + n**2
random.seed();
for i in range(10):
j = random.randint(2,10);
k = random.randint(j+1,20);
t = [2 * j * k, k**2 - j**2, k**2 + j**2]
result = triangle.isNotTriangle(t);
self.assertFalse(result);
result = triangle.isRight(t);
self.assertTrue(result);
def testNotRight(self):
"""isRight should return False with not right triangles [346561df2a581258]"""
# I'm going to use the pythagorean theorum to reject right triangles...
random.seed();
for i in range(10):
j = k = l = 0;
while(j**2 + k**2 == l**2
or k**2 + l**2 == j**2
or l**2 + j**2 == k**2
or j + k <= l
or k + l <= j
or l + j <= k):
j = random.randint(2,100);
k = random.randint(2,100);
l = random.randint(2,100);
t = [j, k, l];
result = triangle.isNotTriangle(t);
self.assertFalse(result);
result = triangle.isRight(t);
self.assertFalse(result);