hamming: initial commit

cpp/hamming/hamming_test.cpp

@@ -0,0 +1,51 @@
+#include "hamming.h"
+#include <stdexcept>
+#define BOOST_TEST_MAIN
+#include <boost/test/unit_test.hpp>
+
+BOOST_AUTO_TEST_CASE(no_difference_between_identical_strands)
+{
+    BOOST_REQUIRE_EQUAL(0, hamming::compute("A", "A"));
+}
+
+#if defined(EXERCISM_RUN_ALL_TESTS)
+BOOST_AUTO_TEST_CASE(complete_hamming_distance_for_single_nucleotide_strand)
+{
+    BOOST_REQUIRE_EQUAL(1, hamming::compute("A", "G"));
+}
+
+BOOST_AUTO_TEST_CASE(complete_hamming_distance_for_small_strand)
+{
+    BOOST_REQUIRE_EQUAL(2, hamming::compute("AG", "CT"));
+}
+
+BOOST_AUTO_TEST_CASE(small_hamming_distance)
+{
+    BOOST_REQUIRE_EQUAL(1, hamming::compute("AT", "CT"));
+}
+
+BOOST_AUTO_TEST_CASE(small_hamming_distance_in_longer_strand)
+{
+    BOOST_REQUIRE_EQUAL(1, hamming::compute("GGACG", "GGTCG"));
+}
+
+BOOST_AUTO_TEST_CASE(domain_error_when_first_string_is_longer)
+{
+    BOOST_REQUIRE_THROW(hamming::compute("AAAG", "AAA"), std::domain_error);
+}
+
+BOOST_AUTO_TEST_CASE(domain_error_when_second_string_is_longer)
+{
+    BOOST_REQUIRE_THROW(hamming::compute("AAA", "AAAG"), std::domain_error);
+}
+
+BOOST_AUTO_TEST_CASE(large_hamming_distance)
+{
+    BOOST_REQUIRE_EQUAL(4, hamming::compute("GATACA", "GCATAA"));
+}
+
+BOOST_AUTO_TEST_CASE(hamming_distance_in_very_long_strand)
+{
+    BOOST_REQUIRE_EQUAL(9, hamming::compute("GGACGGATTCTG", "AGGACGGATTCT"));
+}
+#endif