# tests/CMakeLists.txt
# Unity-based unit tests for tbaMUD
#
# Each test executable is built from:
#   vendor/unity/unity.c   — test framework
#   test_stubs.c           — weak-symbol stubs for all unresolved mud globals
#   src/<module>.c         — the source file(s) under test
#   test_<name>.c          — the test file itself
#
# Only the source files being tested are compiled — in particular comm.c
# (which contains main()) is never included.

cmake_minimum_required(VERSION 3.12)

enable_testing()

# ---------------------------------------------------------------------------
# Common settings shared by all test targets
# ---------------------------------------------------------------------------

set(UNITY_SRC  ${CMAKE_CURRENT_SOURCE_DIR}/vendor/unity/unity.c)
set(STUBS_SRC  ${CMAKE_CURRENT_SOURCE_DIR}/test_stubs.c)

set(MUD_SRCDIR ${CMAKE_SOURCE_DIR}/src)

# Include paths: mud source dir for conf.h / structs.h etc.,
# CMake binary dir for the generated conf.h (cmake builds place it there),
# and the Unity header dir.
set(TEST_INCLUDES
    ${MUD_SRCDIR}
    ${CMAKE_BINARY_DIR}
    ${CMAKE_CURRENT_SOURCE_DIR}/vendor/unity
)

# Suppress warnings that fire in generated stubs / vendored code and in the
# mud sources when compiled outside their normal full-build context.
set(TEST_CFLAGS)
if(CMAKE_C_COMPILER_ID MATCHES "^(GNU|Clang|AppleClang)$")
    list(APPEND TEST_CFLAGS
        -Wno-unused-parameter
        -Wno-unused-function
        -Wno-unused-variable
    )
endif()

# Helper macro: add_mud_test(name SRC1 [SRC2 …])
# Creates an executable, registers it with CTest.
macro(add_mud_test TEST_NAME)
    add_executable(${TEST_NAME}
        ${UNITY_SRC}
        ${STUBS_SRC}
        ${ARGN}
    )
    target_include_directories(${TEST_NAME} PRIVATE ${TEST_INCLUDES})
    target_compile_options(${TEST_NAME} PRIVATE ${TEST_CFLAGS})
    add_test(NAME ${TEST_NAME} COMMAND ${TEST_NAME})
endmacro()

# ---------------------------------------------------------------------------
# test_utils  — covers src/utils.c
# ---------------------------------------------------------------------------
add_mud_test(test_utils
    ${MUD_SRCDIR}/utils.c
    ${MUD_SRCDIR}/random.c
    ${CMAKE_CURRENT_SOURCE_DIR}/test_utils.c
)

# ---------------------------------------------------------------------------
# test_random — covers src/random.c and rand_number/dice in src/utils.c
# ---------------------------------------------------------------------------
add_mud_test(test_random
    ${MUD_SRCDIR}/random.c
    ${MUD_SRCDIR}/utils.c
    ${CMAKE_CURRENT_SOURCE_DIR}/test_random.c
)

# ---------------------------------------------------------------------------
# test_interpreter — covers string helpers in src/interpreter.c
# ---------------------------------------------------------------------------
add_mud_test(test_interpreter
    ${MUD_SRCDIR}/interpreter.c
    ${MUD_SRCDIR}/utils.c
    ${MUD_SRCDIR}/random.c
    ${CMAKE_CURRENT_SOURCE_DIR}/test_interpreter.c
)

# crypt() is referenced from interpreter.c (nanny password hashing).
# Reuse the crypt library detected by the top-level build when one is needed;
# on platforms where crypt() is provided by libc, no extra link library is
# required.
if(CRYPT_LIBRARY)
    target_link_libraries(test_interpreter PRIVATE ${CRYPT_LIBRARY})
endif()

# ---------------------------------------------------------------------------
# test_class — covers src/class.c
# ---------------------------------------------------------------------------
add_mud_test(test_class
    ${MUD_SRCDIR}/class.c
    ${MUD_SRCDIR}/utils.c
    ${MUD_SRCDIR}/random.c
    ${CMAKE_CURRENT_SOURCE_DIR}/test_class.c
)