Add tests and fix minor problems in specifier parser

test/CMakeLists.txt

@@ -0,0 +1,11 @@
+project(simple-printf-test)
+
+add_subdirectory(catch2 EXCLUDE_FROM_ALL)
+
+add_custom_target(test "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}" "-r compact" "-s" DEPENDS ${PROJECT_NAME})
+
+include_directories("${CMAKE_CURRENT_SOURCE_DIR}/catch-framework")
+aux_source_directory("src" TEST_SOURCES)
+
+add_executable(${PROJECT_NAME} EXCLUDE_FROM_ALL ${TEST_SOURCES})
+target_link_libraries(${PROJECT_NAME} PRIVATE simple-printf Catch2::Catch2WithMain)

test/src/tests.cpp

@@ -0,0 +1,114 @@
+#include <array>
+#include <catch2/catch_test_macros.hpp>
+#include <cstdio>
+#include <string>
+#include <iostream>
+
+extern "C" {
+#include <simple-printf/simple-printf.h>
+}
+
+TEST_CASE("Parse Invalid Specifier")
+{
+	const char *tst = "%m";
+	const char *tst2 = "%45m";
+	const char *tst3 = "%014m";
+	struct format_specifier result;
+
+        parse_format_specifier(tst, &result);
+        REQUIRE(result.specifier == FMT_INVALID);
+
+	parse_format_specifier(tst, &result);
+        REQUIRE(result.specifier == FMT_INVALID);
+
+	parse_format_specifier(tst, &result);
+        REQUIRE(result.specifier == FMT_INVALID);
+}
+
+TEST_CASE("Parse Format Specifier c", "Char")
+{
+	const char *tst = "%c";
+	struct format_specifier result;
+
+	parse_format_specifier(tst, &result);
+
+	REQUIRE(result.length_of_provided_specifier == 2);
+	REQUIRE(result.specifier == FMT_CHAR);
+	REQUIRE(result.zero_pad == false);
+}
+
+TEST_CASE("Parse Format Specifier s", "String")
+{
+	const char *tst = "%s";
+	struct format_specifier result;
+
+	parse_format_specifier(tst, &result);
+
+	REQUIRE(result.length_of_provided_specifier == 2);
+	REQUIRE(result.specifier == FMT_STRING);
+        REQUIRE(result.length == 0);
+	REQUIRE(result.zero_pad == false);
+}
+
+TEST_CASE("Parse Format Specifier 04s", "String")
+{
+	const char *tst = "%04s";
+	struct format_specifier result;
+
+	parse_format_specifier(tst, &result);
+
+	REQUIRE(result.specifier == FMT_STRING);
+        REQUIRE(result.length_of_provided_specifier == 4);
+        REQUIRE(result.length == 4);
+	REQUIRE(result.zero_pad == true);
+}
+
+TEST_CASE("Parse Format Specifier 08x", "hex")
+{
+	const char *tst = "%08x";
+	struct format_specifier result;
+
+	parse_format_specifier(tst, &result);
+
+	REQUIRE(result.specifier == FMT_HEXUINT);
+        REQUIRE(result.length_of_provided_specifier == 4);
+        REQUIRE(result.length == 8);
+	REQUIRE(result.zero_pad == true);
+}
+
+TEST_CASE("Parse Format Specifier 08x with stuff", "hex")
+{
+	const std::array<std::string, 8> tst_arr  {
+                std::move(std::string("%08xff458578")),
+                std::move(std::string("%08x45578")),
+                std::move(std::string("%08xx458578")),
+                std::move(std::string("%08x44458578")),
+                std::move(std::string("%08x45sdf458578")),
+                std::move(std::string("%08xsfsdf4558578")),
+                std::move(std::string("%08xX")),
+                std::move(std::string("%08xdsda"))
+        };	
+        
+        struct format_specifier result;
+
+        for (const auto &tst : tst_arr) {
+                parse_format_specifier(tst.c_str(), &result);
+                REQUIRE(result.specifier == FMT_HEXUINT);
+                REQUIRE(result.length_of_provided_specifier == 4);
+                REQUIRE(result.length == 8);
+                REQUIRE(result.zero_pad == true);
+        }
+}
+
+TEST_CASE("Parse Percent spefifier")
+{
+	const char *tst = "%%";
+	struct format_specifier result;
+
+	parse_format_specifier(tst, &result);
+
+	REQUIRE(result.specifier == FMT_PERCENT);
+        REQUIRE(result.length_of_provided_specifier == 2);
+        REQUIRE(result.length == 0);
+	REQUIRE(result.zero_pad == false);
+}