Started adding unit tests

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "test/googletest"]
+	path = test/googletest
+	url = https://github.com/google/googletest.git

CMakeLists.txt

@@ -3,11 +3,14 @@ project(logger)
 
 set(CMAKE_CXX_STANDARD 20)
 
+
 if(NOT CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE Release)
 endif()
 
 
+include_directories(inc)
+
 add_executable(logger src/main.cpp)
 
 
@@ -18,4 +21,9 @@ else()
 endif()
 
 
-include_directories(inc)
+option(PACKAGE_TESTS "Build the tests" ON)
+if(PACKAGE_TESTS)
+    enable_testing()
+    include(GoogleTest)
+    add_subdirectory(test)
+endif()

inc/parse_types.h

@@ -18,6 +18,12 @@ struct fmt_node_t {
     int        length           = 6;
     int        precision        = 2;
     FormatType type             = FormatType::s;
+
+    constexpr bool operator==(const fmt_node_t& rhs) const {
+        return (rhs.has_zero_padding == has_zero_padding) &&
+               (rhs.length == length) && (rhs.precision == precision) &&
+               (rhs.type == type);
+    }
 };
 
 
@@ -26,6 +32,17 @@ public:
     constexpr ast_node_t() {
     }
 
+    constexpr ast_node_t(char c) : m_is_char(true), m_c(c) {
+    }
+
+    constexpr ast_node_t(fmt_node_t node) : m_is_char(false), m_node(node) {
+    }
+
+    constexpr bool operator==(const ast_node_t& rhs) const {
+        return ((rhs.m_is_char == m_is_char) && (rhs.m_c == m_c)) ||
+                ((rhs.m_is_char != m_is_char) && (rhs.m_node == m_node));
+    }
+
     constexpr void set_char(char c) {
         m_c       = c;
         m_is_char = true;

inc/utility.h

@@ -2,6 +2,9 @@
 #define LOGGER_UTILITY_H
 
 
+#include <cstdlib>
+
+
 namespace detail {
 
 

test/CMakeLists.txt

@@ -0,0 +1,21 @@
+add_subdirectory("googletest")
+
+mark_as_advanced(
+        BUILD_GMOCK BUILD_GTEST BUILD_SHARED_LIBS
+        gmock_build_tests gtest_build_samples gtest_build_tests
+        gtest_disable_pthreads gtest_force_shared_crt gtest_hide_internal_symbols
+)
+
+macro(package_add_test TESTNAME)
+    add_executable(${TESTNAME} ${ARGN})
+    target_link_libraries(${TESTNAME} gtest gmock gtest_main)
+    gtest_discover_tests(${TESTNAME}
+            WORKING_DIRECTORY ${PROJECT_DIR}
+            PROPERTIES VS_DEBUGGER_WORKING_DIRECTORY "${PROJECT_DIR}"
+            )
+    set_target_properties(${TESTNAME} PROPERTIES FOLDER tests)
+endmacro()
+
+package_add_test(utility_test src/utility.cpp)
+package_add_test(parse_test src/parse.cpp)
+

test/googletest

@@ -0,0 +1 @@
+Subproject commit 3e0e32ba300ce8afe695ad3ba7e81b21b7cf237a

test/src/format.cpp

@@ -0,0 +1,2 @@
+#include <format.h>
+#include <gtest/gtest.h>

test/src/parse.cpp

@@ -0,0 +1,18 @@
+#include <gtest/gtest.h>
+#include <parse.h>
+
+TEST(Parse, ast_node) {
+    ast_node_t ast_node1{'a'};
+    ast_node_t ast_node2{'a'};
+    ast_node_t ast_node3{'b'};
+
+    EXPECT_EQ(ast_node1 == ast_node2, true);
+    EXPECT_EQ(ast_node1 == ast_node3, false);
+}
+
+TEST(Parse, chars_only) {
+    constexpr std::array<ast_node_t, 8> control = {'a', 'b', 'c', 'd',
+                                                   'e', 'f', 'g', 'h'};
+
+    EXPECT_EQ(detail::parse_string<"abcdefgh">().value, control);
+}

test/src/utility.cpp

@@ -0,0 +1,9 @@
+#include <utility.h>
+#include <gtest/gtest.h>
+
+TEST(Utility, const_pow) {
+    EXPECT_EQ(detail::const_pow(10, 0), 1);
+    EXPECT_EQ(detail::const_pow(0, 1), 0);
+    EXPECT_EQ(detail::const_pow(2, 8), 0b1'0000'0000);
+}
+