From 21cf170b5aa09da0ffd7ae427129b6ce2c03f98b Mon Sep 17 00:00:00 2001
From: Camden Dixie O'Brien <cdo@wip.sh>
Date: Wed, 25 Dec 2024 18:08:50 +0000
Subject: [PATCH] Create project skeleton

---
 CMakeLists.txt          | 22 ++++++++++++++++++++++
 engine/CMakeLists.txt   |  5 +++++
 engine/foo.c            | 11 +++++++++++
 engine/include/foo.h    | 11 +++++++++++
 tests/CMakeLists.txt    | 21 +++++++++++++++++++++
 tests/foo_tests.c       | 20 ++++++++++++++++++++
 tests/include/testing.h | 39 +++++++++++++++++++++++++++++++++++++++
 tests/testing.c         |  8 ++++++++
 8 files changed, 137 insertions(+)
 create mode 100644 CMakeLists.txt
 create mode 100644 engine/CMakeLists.txt
 create mode 100644 engine/foo.c
 create mode 100644 engine/include/foo.h
 create mode 100644 tests/CMakeLists.txt
 create mode 100644 tests/foo_tests.c
 create mode 100644 tests/include/testing.h
 create mode 100644 tests/testing.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..40dc82b
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,22 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(epec-mcu-emulator LANGUAGES C)
+
+option(TESTS "Build unit tests" ON)
+option(WERROR "Treat warnings as errors" OFF)
+
+macro(set_default_target_options target)
+  set_property(TARGET ${target} PROPERTY C_STANDARD 11)
+  set_property(TARGET ${target} PROPERTY C_EXTENSIONS OFF)
+  target_compile_options(${target} PRIVATE -Wall -Wextra -pedantic)
+  if (${WERROR})
+	target_compile_options(${target} PRIVATE -Werror)
+  endif()
+endmacro()
+
+add_subdirectory(engine)
+
+if (${TESTS})
+  enable_testing()
+  add_subdirectory(tests)
+endif()
diff --git a/engine/CMakeLists.txt b/engine/CMakeLists.txt
new file mode 100644
index 0000000..fdfb906
--- /dev/null
+++ b/engine/CMakeLists.txt
@@ -0,0 +1,5 @@
+add_library(engine
+  foo.c
+)
+set_default_target_options(engine)
+target_include_directories(engine PUBLIC include)
diff --git a/engine/foo.c b/engine/foo.c
new file mode 100644
index 0000000..d8aa547
--- /dev/null
+++ b/engine/foo.c
@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) Camden Dixie O'Brien
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+#include "foo.h"
+
+int foo(void)
+{
+	return 42;
+}
diff --git a/engine/include/foo.h b/engine/include/foo.h
new file mode 100644
index 0000000..271ad16
--- /dev/null
+++ b/engine/include/foo.h
@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) Camden Dixie O'Brien
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+#ifndef FOO_H
+#define FOO_H
+
+int foo(void);
+
+#endif
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
new file mode 100644
index 0000000..bca5248
--- /dev/null
+++ b/tests/CMakeLists.txt
@@ -0,0 +1,21 @@
+add_library(testing testing.c)
+set_default_target_options(testing)
+target_include_directories(testing PUBLIC include)
+
+function(add_test_suite source)
+  string(REGEX REPLACE ".c$" "" name ${source})
+  add_executable(${name} ${source})
+  set_default_target_options(${name})
+  target_link_libraries(${name} PRIVATE engine testing)
+  add_test(NAME ${name} COMMAND ${name})
+endfunction()
+
+function(add_test_suites)
+  foreach(source ${ARGN})
+	add_test_suite(${source})
+  endforeach()
+endfunction()
+
+add_test_suites(
+  foo_tests.c
+)
diff --git a/tests/foo_tests.c b/tests/foo_tests.c
new file mode 100644
index 0000000..1f3d21d
--- /dev/null
+++ b/tests/foo_tests.c
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) Camden Dixie O'Brien
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+#include "foo.h"
+#include "testing.h"
+
+static void test_foo(void)
+{
+	const int res = foo();
+	ASSERT_EQ(42, res);
+}
+
+int main(void)
+{
+	TESTING_BEGIN();
+	test_foo();
+	return TESTING_END();
+}
diff --git a/tests/include/testing.h b/tests/include/testing.h
new file mode 100644
index 0000000..c319285
--- /dev/null
+++ b/tests/include/testing.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) Camden Dixie O'Brien
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+#ifndef TESTING_H
+#define TESTING_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define TESTING_BEGIN() fail_count = 0
+#define TESTING_END() fail_count == 0 ? EXIT_SUCCESS : EXIT_FAILURE
+
+#define FAIL \
+	do { \
+		++fail_count; \
+		printf("%s: FAIL @ %s:%d\n", __func__, __FILE__, __LINE__); \
+		return; \
+	} while (0)
+
+#define ASSERT_FALSE(p) \
+	do { \
+		if (p) \
+			FAIL; \
+	} while (0)
+
+#define ASSERT_TRUE(p) ASSERT_FALSE(!(p))
+#define ASSERT_EQ(x, y) ASSERT_FALSE((x) != (y))
+#define ASSERT_NE(x, y) ASSERT_FALSE((x) == (y))
+#define ASSERT_LT(x, y) ASSERT_FALSE((x) <= (y))
+#define ASSERT_NULL(p) ASSERT_FALSE(NULL != (p))
+#define ASSERT_NOT_NULL(p) ASSERT_FALSE(NULL == (p))
+#define ASSERT_MEM_EQ(p, q, n) ASSERT_FALSE(memcmp(p, q, n) != 0)
+
+extern int fail_count;
+
+#endif
diff --git a/tests/testing.c b/tests/testing.c
new file mode 100644
index 0000000..2ea878d
--- /dev/null
+++ b/tests/testing.c
@@ -0,0 +1,8 @@
+/*
+ * Copyright (c) Camden Dixie O'Brien
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+#include "testing.h"
+
+int fail_count;