From ce22745620381e452ba260601ac893be5b96f106 Mon Sep 17 00:00:00 2001
From: Daniel Thornburgh <mysterymath@gmail.com>
Date: Fri, 4 Nov 2022 10:16:42 -0700
Subject: [PATCH] Fill out test.

---
 CMakeLists.txt |  5 ++++-
 expected       |  1 +
 test.cmake     | 12 +++++++++++-
 3 files changed, 16 insertions(+), 2 deletions(-)
 create mode 100644 expected

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cb62bc6..834820c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,6 +2,8 @@ cmake_minimum_required(VERSION 3.18)
 set(LLVM_MOS_PLATFORM sim)
 find_package(llvm-mos-sdk REQUIRED)
 project(smoke-test)
+include(CTest)
+
 add_executable(hello hello.c)
 
 find_program(SIM mos-sim REQUIRED)
@@ -9,5 +11,6 @@ add_test(NAME test
   COMMAND ${CMAKE_COMMAND}
           -DSIM=${SIM}
           -DHELLO=$<TARGET_FILE:hello>
-          -P test.cmake
+          -DEXPECTED=${CMAKE_CURRENT_SOURCE_DIR}/expected
+          -P ${CMAKE_CURRENT_SOURCE_DIR}/test.cmake
 )
diff --git a/expected b/expected
new file mode 100644
index 0000000..af5626b
--- /dev/null
+++ b/expected
@@ -0,0 +1 @@
+Hello, world!
diff --git a/test.cmake b/test.cmake
index 5262888..0dca0ee 100644
--- a/test.cmake
+++ b/test.cmake
@@ -1 +1,11 @@
-find_program(SIM mos-sim REQUIRED)
+execute_process(COMMAND ${SIM} ${HELLO}
+   OUTPUT_FILE output RESULT_VARIABLE RESULT)
+if (RESULT)
+  message(FATAL_ERROR "Error running simulated test.")
+endif()
+execute_process(
+  COMMAND ${CMAKE_COMMAND} -E compare_files --ignore-eol output ${EXPECTED}
+   RESULT_VARIABLE RESULT)
+if (RESULT)
+  message(FATAL_ERROR "Incorrect output.")
+endif()