rename is_stringable_tests to stringable_tests

Author: gammasoft71

tests/xtd.core.unit_tests/CMakeLists.txt

@@ -249,7 +249,6 @@ add_sources(
   "src/xtd/tests/invalid_cast_exception_tests.cpp"
   "src/xtd/tests/invalid_operation_exception_tests.cpp"
   "src/xtd/tests/invalid_program_exception_tests.cpp"
-  "src/xtd/tests/is_stringable_tests.cpp"
   "src/xtd/tests/is_tests.cpp"
   "src/xtd/tests/language_id_tests.cpp"
   "src/xtd/tests/length_exception_tests.cpp"
@@ -295,6 +294,7 @@ add_sources(
   "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/stringable_tests.cpp"
   "src/xtd/tests/system_exception_tests.cpp"
   "src/xtd/tests/target_id_tests.cpp"
   "src/xtd/tests/tick_tests.cpp"

…ts/src/xtd/tests/is_stringable_tests.cpp …tests/src/xtd/tests/stringable_tests.cpptests/xtd.core.unit_tests/src/xtd/tests/is_stringable_tests.cpp renamed to tests/xtd.core.unit_tests/src/xtd/tests/stringable_tests.cpp tests/xtd.core.unit_tests/src/xtd/tests/is_stringable_tests.cpp renamed to tests/xtd.core.unit_tests/src/xtd/tests/stringable_tests.cpp

@@ -17,7 +17,7 @@ using namespace xtd;
 using namespace xtd::tunit;
 
 namespace xtd::tests {
-  class test_class_(is_stringable_tests) {
+  class test_class_(stringable_tests) {
     auto test_method_(is_stringable_with_object) {
       struct my_object_test : public object {};
       assert_that(stringable<my_object_test>).is().true_();
@@ -88,7 +88,7 @@ namespace xtd::tests {
     #endif
 
     auto test_method_(is_stringable_with_xtd_ranges) {
-      auto items = array {1, 2, 3, 4, 5} | select(delegate_(auto v) {return v * v * v;});
+      auto items = array {1, 2, 3, 4, 5} | xtd::views::select(delegate_(auto v) {return v * v * v;});
       assert_that(stringable<decltype(items)>).is().true_();
       assert_that(stringable < decltype(items) && >).is().true_();
       assert_that(stringable<decltype(items)&>).is().true_();