refactor: move setup of chapter 2 tests out of main

chapters/chapter_02/CMakeLists.txt

@@ -1,5 +1,6 @@
 add_library(
   chapter_02
+  src/chapter_2_tests.cpp
   src/constexp.cpp
   src/if_constexpr.cpp
   src/ifswitch.cpp

chapters/chapter_02/include/chapter_2_tests.h

@@ -0,0 +1,5 @@
+#include "chapter_interface.h"
+#include <memory>
+#include <vector>
+
+std::vector<std::unique_ptr<ChapterTest>> chapter_2_tests();

chapters/chapter_02/src/chapter_2_tests.cpp

@@ -0,0 +1,30 @@
+#include "chapter_2_tests.h"
+#include "constexp.h"
+#include "delegate_constructor.h"
+#include "if_constexpr.h"
+#include "ifswitch.h"
+#include "inheritance_constructor.h"
+#include "initlist.h"
+#include "null.h"
+#include "range_based_for.h"
+#include "structured_binding.h"
+#include "type_inference.h"
+#include "variadic_templates.h"
+
+std::vector<std::unique_ptr<ChapterTest>> chapter_2_tests() {
+  std::vector<std::unique_ptr<ChapterTest>> chapter_2_tests;
+
+  chapter_2_tests.emplace_back(std::make_unique<NullTest>());
+  chapter_2_tests.emplace_back(std::make_unique<IfswitchTest>());
+  chapter_2_tests.emplace_back(std::make_unique<ConstExpTest>());
+  chapter_2_tests.emplace_back(std::make_unique<InitListTest>());
+  chapter_2_tests.emplace_back(std::make_unique<StructuredBindingTest>());
+  chapter_2_tests.emplace_back(std::make_unique<TypeInferenceTest>());
+  chapter_2_tests.emplace_back(std::make_unique<IfConstexprTest>());
+  chapter_2_tests.emplace_back(std::make_unique<RangeBasedForTest>());
+  chapter_2_tests.emplace_back(std::make_unique<VariadicTemplates>());
+  chapter_2_tests.emplace_back(std::make_unique<DelegateConstructor>());
+  chapter_2_tests.emplace_back(std::make_unique<InheritanceConstructor>());
+
+  return chapter_2_tests;
+}

src/main.cpp

@@ -3,17 +3,7 @@
 #include <memory>
 #include <vector>
 
-#include "constexp.h"
-#include "delegate_constructor.h"
-#include "if_constexpr.h"
-#include "ifswitch.h"
-#include "inheritance_constructor.h"
-#include "initlist.h"
-#include "null.h"
-#include "range_based_for.h"
-#include "structured_binding.h"
-#include "type_inference.h"
-#include "variadic_templates.h"
+#include "chapter_2_tests.h"
 #include "version.h"
 
 int main(int argc, char **argv) {
@@ -21,21 +11,7 @@ int main(int argc, char **argv) {
   std::cout << "Running " << PROJECT_NAME << ", version " << VERSION
             << std::endl;
 
-  std::vector<std::unique_ptr<ChapterTest>> chapter_2_tests;
-
-  chapter_2_tests.emplace_back(std::make_unique<NullTest>());
-  chapter_2_tests.emplace_back(std::make_unique<IfswitchTest>());
-  chapter_2_tests.emplace_back(std::make_unique<ConstExpTest>());
-  chapter_2_tests.emplace_back(std::make_unique<InitListTest>());
-  chapter_2_tests.emplace_back(std::make_unique<StructuredBindingTest>());
-  chapter_2_tests.emplace_back(std::make_unique<TypeInferenceTest>());
-  chapter_2_tests.emplace_back(std::make_unique<IfConstexprTest>());
-  chapter_2_tests.emplace_back(std::make_unique<RangeBasedForTest>());
-  chapter_2_tests.emplace_back(std::make_unique<VariadicTemplates>());
-  chapter_2_tests.emplace_back(std::make_unique<DelegateConstructor>());
-  chapter_2_tests.emplace_back(std::make_unique<InheritanceConstructor>());
-
-  for (auto &test : chapter_2_tests) {
+  for (auto &test : chapter_2_tests()) {
     std::cout << "\n" << test->name() << ":" << std::endl;
     test->run();
   }