Strings recipes for the Dart Cookbook

recipes/test/core/strings/strings_test.dart

+library strings_test;
+
+import 'package:unittest/unittest.dart';
+
+import 'concatenating_strings_test.dart' as concatenating_strings_test;
+import 'interpolating_expressions_test.dart' as interpolating_expressions_test; 
+import 'incrementally_building_test.dart' as incrementally_building_test;
+import 'converting_chars_nums_test.dart' as converting_chars_nums_test;
+import 'testing_string_emptiness_test.dart' as testing_string_emptiness_test;
+import 'trimming_whitespace_test.dart' as trimming_whitespace_test;
+import 'getting_the_length_test.dart' as getting_the_length_test;
+import 'subscripting_strings_test.dart' as subscripting_strings_test;
+import 'splitting_strings_test.dart' as splitting_strings_test;
+import 'changing_string_case.dart' as changing_string_case;
+import 'determining_if_string_contains_test.dart' as determining_if_string_contains_test;
+import 'finding_regexp_matches_test.dart' as finding_regexp_matches_test;
+import 'substituting_strings_test.dart' as substituting_strings_test;
+
+void main() {
+  concatenating_strings_test.main();
+  interpolating_expressions_test.main();
+  incrementally_building_test.main();
+  converting_chars_nums_test.main();
+  testing_string_emptiness_test.main;
+  trimming_whitespace_test.main();
+  getting_the_length_test.main();
+  subscripting_strings_test.main();
+  splitting_strings_test.main();
+  changing_string_case.main();
+  determining_if_string_contains_test.main();
+  finding_regexp_matches_test.main(); 
+  substituting_strings_test.main();
+}