Tests: Clean up and simplify TryCompile tests

Add and use some additional helper macros to simplify repetitive checks.
Use existing macros in more places. Tweak macros to improve output in
case of failure.

Tests/TryCompile/CMakeLists.txt

@@ -6,13 +6,25 @@ project(TryCompile)
 
 macro(EXPECT_PASS var out)
   if(NOT ${var})
-    message(SEND_ERROR "Should pass failed ${out}")
+    message(SEND_ERROR "Should pass failed:\n${out}")
   endif()
 endmacro()
 
 macro(EXPECT_FAIL var out)
   if(${var})
-    message(SEND_ERROR "Should fail passed ${out}")
+    message(SEND_ERROR "Should fail passed:\n${out}")
+  endif()
+endmacro()
+
+macro(EXPECT_COMPILED name var out)
+  if(NOT ${var})
+    message(SEND_ERROR "${name} failed compiling:\n${out}")
+  endif()
+endmacro()
+
+macro(EXPECT_RUN_RESULT name var expected)
+  if(NOT ${var} EQUAL ${expected})
+    message(SEND_ERROR " ${name} gave unexpected run result: ${${var}} expected: ${expected}")
   endif()
 endmacro()
 
@@ -88,23 +100,15 @@ try_run(SHOULD_EXIT_WITH_ERROR SHOULD_COMPILE
   SOURCE_FROM_ARG main.c "${TRY_RUN_MAIN_CODE}"
   SOURCE_FROM_ARG answer.c "${TRY_RUN_EXT_CODE}"
   COMPILE_OUTPUT_VARIABLE COMPILE_OUTPUT)
-if(NOT SHOULD_COMPILE)
+EXPECT_COMPILED("SOURCE_FROM_ARG" SHOULD_COMPILE "${COMPILE_OUTPUT}")
-  message(SEND_ERROR " SOURCE_FROM_ARG failed compiling: ${COMPILE_OUTPUT}")
+EXPECT_RUN_RESULT("SOURCE_FROM_ARG" SHOULD_EXIT_WITH_ERROR 42)
-endif()
-if(NOT SHOULD_EXIT_WITH_ERROR EQUAL 42)
-  message(SEND_ERROR " SOURCE_FROM_ARG gave unexpected run result: ${SHOULD_EXIT_WITH_ERROR}")
-endif()
 
 try_run(SHOULD_EXIT_WITH_ERROR SHOULD_COMPILE
   SOURCE_FROM_VAR main.c TRY_RUN_MAIN_CODE
   SOURCE_FROM_VAR answer.c TRY_RUN_EXT_CODE
   COMPILE_OUTPUT_VARIABLE COMPILE_OUTPUT)
-if(NOT SHOULD_COMPILE)
+EXPECT_COMPILED("SOURCE_FROM_VAR" SHOULD_COMPILE "${COMPILE_OUTPUT}")
-  message(SEND_ERROR " SOURCE_FROM_VAR failed compiling: ${COMPILE_OUTPUT}")
+EXPECT_RUN_RESULT("SOURCE_FROM_VAR" SHOULD_EXIT_WITH_ERROR 42)
-endif()
-if(NOT SHOULD_EXIT_WITH_ERROR EQUAL 42)
-  message(SEND_ERROR " SOURCE_FROM_VAR gave unexpected run result: ${SHOULD_EXIT_WITH_ERROR}")
-endif()
 
 # try to compile a project (old signature)
 message("Testing try_compile project mode (old signature)")

Tests/TryCompile/exit_with_error.c

@@ -3,5 +3,5 @@
 int main()
 {
   printf("hello world\n");
-  return -1;
+  return 1;
 }

Tests/TryCompile/old_and_new_signature_tests.cmake

@@ -130,18 +130,14 @@ if(APPLE)
     ${try_compile_bindir_or_SOURCES}
     ${TryCompile_SOURCE_DIR}/pass.m
     OUTPUT_VARIABLE TRY_OUT)
-  if(NOT SHOULD_PASS)
+  EXPECT_PASS(SHOULD_PASS "${TRY_OUT}")
-    message(SEND_ERROR "should pass failed ${TRY_OUT}")
-  endif()
 
   # try to compile a file that should not compile
   try_compile(SHOULD_FAIL
     ${try_compile_bindir_or_SOURCES}
     ${TryCompile_SOURCE_DIR}/fail.m
     OUTPUT_VARIABLE TRY_OUT)
-  if(SHOULD_FAIL)
+  EXPECT_FAIL(SHOULD_FAIL "${TRY_OUT}")
-    message(SEND_ERROR "Should fail passed ${TRY_OUT}")
-  endif()
 endif()
 
 ######################################
@@ -155,14 +151,9 @@ try_run(SHOULD_RUN SHOULD_COMPILE
     ${try_compile_bindir_or_SOURCES}
     ${TryCompile_SOURCE_DIR}/exit_success.c
     ${try_compile_output_vars})
-if(NOT SHOULD_COMPILE)
+EXPECT_COMPILED("exit_success" SHOULD_COMPILE "${${try_compile_compile_output_var}}")
-  message(SEND_ERROR
+EXPECT_RUN_RESULT("exit_success" SHOULD_RUN 0)
-    "exit_success failed compiling: ${${try_compile_compile_output_var}}")
+
-endif()
-if(NOT "${SHOULD_RUN}" STREQUAL "0")
-  message(SEND_ERROR
-    "exit_success failed running with exit code ${SHOULD_RUN}")
-endif()
 # check the compile output for the filename
 if(NOT "${${try_compile_compile_output_var}}" MATCHES "exit_success")
   message(SEND_ERROR
@@ -181,12 +172,8 @@ try_run(ARG_TEST_RUN ARG_TEST_COMPILE
     ${TryCompile_SOURCE_DIR}/expect_arg.c
     COMPILE_OUTPUT_VARIABLE TRY_OUT
     ARGS arg1 arg2)
-if(NOT ARG_TEST_COMPILE)
+EXPECT_COMPILED("expect_arg" ARG_TEST_COMPILE "${TRY_OUT}")
-  message(SEND_ERROR "expect_arg failed compiling: ${TRY_OUT}")
+EXPECT_RUN_RESULT("expect_arg" ARG_TEST_RUN 0)
-endif()
-if(NOT "${ARG_TEST_RUN}" STREQUAL "0")
-  message(SEND_ERROR "expect_arg failed running with exit code ${ARG_TEST_RUN} ${TRY_OUT}")
-endif()
 
 # try to run a file that should compile and run, but return an error
 try_run(SHOULD_EXIT_WITH_ERROR SHOULD_COMPILE
@@ -194,13 +181,8 @@ try_run(SHOULD_EXIT_WITH_ERROR SHOULD_COMPILE
     ${TryCompile_SOURCE_DIR}/exit_with_error.c
     COMPILE_OUTPUT_VARIABLE COMPILE_OUTPUT
     RUN_OUTPUT_VARIABLE RUN_OUTPUT)
-
+EXPECT_COMPILED("exit_with_error" SHOULD_COMPILE "${COMPILE_OUTPUT}")
-if(NOT SHOULD_COMPILE)
+EXPECT_RUN_RESULT("exit_with_error" SHOULD_EXIT_WITH_ERROR 1)
-  message(STATUS " exit_with_error failed compiling: ${COMPILE_OUTPUT}")
-endif()
-if("${SHOULD_EXIT_WITH_ERROR}" STREQUAL "0")
-  message(SEND_ERROR " exit_with_error passed with exit code ${SHOULD_EXIT_WITH_ERROR}")
-endif()
 
 # check the compile output, it should contain the filename
 if(NOT "${COMPILE_OUTPUT}" MATCHES "exit_with_error")
@@ -224,10 +206,7 @@ try_run(SHOULD_EXIT_WITH_ERROR SHOULD_COMPILE
   COMPILE_OUTPUT_VARIABLE COMPILE_OUTPUT
   RUN_OUTPUT_STDOUT_VARIABLE RUN_OUTPUT_STDOUT
   RUN_OUTPUT_STDERR_VARIABLE RUN_OUTPUT_STDERR)
-
+EXPECT_PASS(SHOULD_COMPILE "${COMPILE_OUTPUT}")
-if(NOT SHOULD_COMPILE)
-  message(STATUS " exit_with_error failed compiling: ${COMPILE_OUTPUT}")
-endif()
 
 if(NOT EXISTS "${TryCompile_BINARY_DIR}/CopyOfRun")
   message(SEND_ERROR "COPY_FILE to \"${TryCompile_BINARY_DIR}/CopyOfRun\" failed")