Add xtd::string_comparer unit tests

Author: gammasoft71

src/xtd.core/include/xtd/string_comparer.hpp

@@ -4,6 +4,7 @@
 #pragma once
 #include "collections/generic/icomparer.hpp"
 #include "collections/generic/iequality_comparer.hpp"
+#include "argument_exception.hpp"
 #include "string_comparison.hpp"
 #include "string.hpp"
 

tests/xtd.core.unit_tests/CMakeLists.txt

@@ -245,6 +245,7 @@ add_sources(
   src/xtd/tests/signal_tests.cpp
   src/xtd/tests/software_termination_exception_tests.cpp
   src/xtd/tests/standard_name.hpp
+  src/xtd/tests/string_comparer_tests.cpp
   src/xtd/tests/string_comparison_tests.cpp
   src/xtd/tests/string_split_options_tests.cpp
   src/xtd/tests/system_exception_tests.cpp

tests/xtd.core.unit_tests/src/xtd/tests/string_comparer_tests.cpp

@@ -0,0 +1,29 @@
+#include <xtd/string_comparer>
+#include <xtd/tunit/assert>
+#include <xtd/tunit/test_class_attribute>
+#include <xtd/tunit/test_method_attribute>
+
+using namespace xtd;
+using namespace xtd::tunit;
+
+namespace xtd::tests {
+  class test_class_(string_comparer_tests) {
+    void test_method_(string_comparer_ordinal_compare_with_strings) {
+      assert::is_zero(string_comparer::ordinal().compare(string {""}, string {""}));
+      assert::is_zero(string_comparer::ordinal().compare(string {"abc"}, string {"abc"}));
+      assert::is_positive(string_comparer::ordinal().compare(string {"abc"}, string {"ABC"}));
+      assert::is_negative(string_comparer::ordinal().compare(string {"ABC"}, string {"abc"}));
+      assert::is_positive(string_comparer::ordinal().compare(string {"bca"}, string {"abc"}));
+      assert::is_negative(string_comparer::ordinal().compare(string {"abc"}, string {"bca"}));
+    }
+
+    void test_method_(string_comparer_ordinal_ignore_case_compare_with_strings) {
+      assert::is_zero(string_comparer::ordinal_ignore_case().compare(string {""}, string {""}));
+      assert::is_zero(string_comparer::ordinal_ignore_case().compare(string {"abc"}, string {"abc"}));
+      assert::is_zero(string_comparer::ordinal_ignore_case().compare(string {"abc"}, string {"ABC"}));
+      assert::is_zero(string_comparer::ordinal_ignore_case().compare(string {"ABC"}, string {"abc"}));
+      assert::is_positive(string_comparer::ordinal_ignore_case().compare(string {"bca"}, string {"abc"}));
+      assert::is_negative(string_comparer::ordinal_ignore_case().compare(string {"abc"}, string {"bca"}));
+    }
+  };
+}