def test_for_longer_strings_with_same_letter(self):
string1 = "papa"
string2 = "apple"
self.assertEqual("papapple", con_cat(string1, string2))
def test_for_longer_strings_with_diff_letter(self):
string1 = "big"
string2 = "red"
self.assertEqual("bigred", con_cat(string1, string2))
def test_for_ending_and_leading_space(self):
string1 = "hi "
string2 = " there"
self.assertEqual("hi there", con_cat(string1, string2))
def test_for_diff_single_letter(self):
string1 = "h"
string2 = "i"
self.assertEqual("hi", con_cat(string1, string2))
def test_for_same_single_letter(self):
string1 = "h"
string2 = "h"
self.assertEqual("h", con_cat(string1, string2))
def test_for_one_empty_string(self):
string1 = "hello world"
string2 = ""
self.assertEqual(string1, con_cat(string1, string2))
def test_for_empty_strings(self):
string1 = ""
string2 = ""
self.assertEqual("", con_cat(string1, string2))