From: Nathan Moinvaziri <nathan@nathanm.com>
Date: Mon, 13 Jul 2020 02:18:34 +0000 (-0700)
Subject: Allow for CMake to run tests in parallel.
X-Git-Tag: 1.9.9-b1~126
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b948b2a72ce6ce7d40740ded19526076d40ad7f1;p=thirdparty%2Fzlib-ng.git

Allow for CMake to run tests in parallel.
Seperate minigzip and switchlevels set of tests into test-compress.cmake.
Create run-and-compare.cmake for tests that need to run a command and compare output.
---

diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index c257540ab..cec5e2e30 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -370,7 +370,7 @@ jobs:
       if: runner.os != 'Windows' || contains(matrix.name, 'ARM') == false
       run: |
         cd ${{ matrix.build-dir || '.' }}
-        ctest -C Release --output-on-failure --max-width 120
+        ctest -C Release --output-on-failure --max-width 120 -j 6
       env:
         ASAN_OPTIONS: ${{ matrix.asan-options || 'verbosity=1' }}
         MSAN_OPTIONS: ${{ matrix.msan-options || 'verbosity=1' }}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 529020432..e7d0c4b8e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1036,6 +1036,7 @@ if(ZLIB_ENABLE_TESTS)
     set(EXAMPLE_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:example>)
     add_test(NAME example COMMAND ${EXAMPLE_COMMAND})
 
+    set(MINIGZIP_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:minigzip>)
     add_executable(minigzip test/minigzip.c)
     configure_test_executable(minigzip)
     if(NOT DEFINED BUILD_SHARED_LIBS)
@@ -1049,6 +1050,7 @@ if(ZLIB_ENABLE_TESTS)
         endif()
     endif()
 
+    set(MINIDEFLATE_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:minideflate>)
     add_executable(minideflate test/minideflate.c)
     configure_test_executable(minideflate)
     target_link_libraries(minideflate zlib)
@@ -1060,6 +1062,7 @@ if(ZLIB_ENABLE_TESTS)
             LIBRARY DESTINATION "${INSTALL_LIB_DIR}")
     endif()
 
+    set(SWITCHLEVELS_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:switchlevels>)
     add_executable(switchlevels test/switchlevels.c)
     configure_test_executable(switchlevels)
     target_link_libraries(switchlevels zlib)
@@ -1089,89 +1092,28 @@ if(ZLIB_ENABLE_TESTS)
         endforeach()
     endif()
 
-    set(CVES CVE-2002-0059 CVE-2004-0797 CVE-2005-1849 CVE-2005-2096)
-    foreach(CVE ${CVES})
-        set(CVE_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:minigzip> -d)
-        add_test(NAME ${CVE}
-            COMMAND ${CMAKE_COMMAND}
-            "-DCOMMAND=${CVE_COMMAND}"
-            -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/${CVE}/test.gz
-            "-DSUCCESS_EXIT=0;1"
-            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-    endforeach()
-
-    macro(minigzip_stdio_cmp target name path)
-        set(GZ_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:${target}> -c)
-        foreach(EXTRA_ARG IN ITEMS "${ARGN}")
-            list(APPEND GZ_COMMAND ${EXTRA_ARG})
+    macro(test_minigzip name path)
+        # Construct compression arguments for minigzip
+        set(compress_args -k -c)
+        foreach(extra_arg IN ITEMS "${ARGN}")
+            list(APPEND compress_args ${extra_arg})
         endforeach()
 
+        # Create unique friendly string for test
         string(REPLACE ";" "" arg_list "${ARGN}")
+        string(REPLACE " " "" arg_list "${arg_list}")
         string(REPLACE "-" "" arg_list "${arg_list}")
-        set(test_basename ${target}-${name}-${arg_list})
 
-        # Test minigzip can decompress minigzip compressed output
-        add_test(NAME ${test_basename}-compr
+        set(test_id minigzip-${name}-${arg_list})
+
+        add_test(NAME ${test_id}
             COMMAND ${CMAKE_COMMAND}
-            "-DCOMMAND=${GZ_COMMAND}"
+            "-DTARGET=${MINIGZIP_COMMAND}"
+            "-DCOMPRESS_ARGS=${compress_args}"
+            "-DDECOMPRESS_ARGS=-d;-c"
             -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/${path}
-            -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/${path}.gz
-            "-DSUCCESS_EXIT=0;1"
-            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-        set(GZ_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:${target}> -d)
-        add_test(NAME ${test_basename}-uncompr
-            COMMAND ${CMAKE_COMMAND}
-            "-DCOMMAND=${GZ_COMMAND}"
-            -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/${path}.gz
-            -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/${path}.out
-            "-DSUCCESS_EXIT=0;1"
-            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-        add_test(NAME ${test_basename}-cmp
-        COMMAND ${CMAKE_COMMAND} -E compare_files
-            ${CMAKE_CURRENT_SOURCE_DIR}/${path}
-            ${CMAKE_CURRENT_SOURCE_DIR}/${path}.out)
-
-        if(NOT "${ARGN}" MATCHES "-T")
-            # Transparent writing does not use gzip format
-            find_program(GZIP gzip)
-            if(GZIP)
-                # Test gzip can decompress minigzip compressed output
-                set(GZ_COMMAND ${GZIP} --decompress)
-                add_test(NAME ${test_basename}-gzip-uncompr
-                    COMMAND ${CMAKE_COMMAND}
-                    "-DCOMMAND=${GZ_COMMAND}"
-                    -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/${path}.gz
-                    -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/${path}.gzip.out
-                    "-DSUCCESS_EXIT=0;1"
-                    -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-                add_test(NAME ${test_basename}-gzip-uncompr-cmp
-                    COMMAND ${CMAKE_COMMAND} -E compare_files
-                        ${CMAKE_CURRENT_SOURCE_DIR}/${path}
-                        ${CMAKE_CURRENT_SOURCE_DIR}/${path}.gzip.out)
-
-                # Test minigzip can decompress gzip compressed output
-                set(GZ_COMMAND ${GZIP} --stdout)
-                add_test(NAME ${test_basename}-gzip-compr
-                    COMMAND ${CMAKE_COMMAND}
-                    "-DCOMMAND=${GZ_COMMAND}"
-                    -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/${path}
-                    -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/${path}.gzip.gz
-                    "-DSUCCESS_EXIT=0;1"
-                    -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-                set(GZ_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:${target}> -d)
-                add_test(NAME ${test_basename}-minigzip-uncompr
-                    COMMAND ${CMAKE_COMMAND}
-                    "-DCOMMAND=${GZ_COMMAND}"
-                    -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/${path}.gzip.gz
-                    -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/${path}.gzip.out
-                    "-DSUCCESS_EXIT=0;1"
-                    -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-                add_test(NAME ${test_basename}-minigzip-cmp
-                    COMMAND ${CMAKE_COMMAND} -E compare_files
-                        ${CMAKE_CURRENT_SOURCE_DIR}/${path}
-                        ${CMAKE_CURRENT_SOURCE_DIR}/${path}.gzip.out)
-            endif()
-        endif()
+            -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/${path}-${test_id}.gz
+            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-compress.cmake)
     endmacro()
 
     set(TEST_FILES "test/data/lcet10.txt" "test/data/fireworks.jpg" "test/data/paper-100k.pdf")
@@ -1181,15 +1123,26 @@ if(ZLIB_ENABLE_TESTS)
     foreach(TEST_FILE ${TEST_FILES})
         foreach(COMPRESSION_LEVEL ${COMPRESSION_LEVELS})
             get_filename_component(TEST_NAME ${TEST_FILE} NAME_WE)
-            minigzip_stdio_cmp(minigzip ${TEST_NAME} ${TEST_FILE} ${COMPRESSION_LEVEL})
+            test_minigzip(${TEST_NAME} ${TEST_FILE} ${COMPRESSION_LEVEL})
             foreach(OPEN_MODE ${OPEN_MODES})
-                minigzip_stdio_cmp(minigzip ${TEST_NAME} ${TEST_FILE} ${COMPRESSION_LEVEL} ${OPEN_MODE})
+                test_minigzip(${TEST_NAME} ${TEST_FILE} ${COMPRESSION_LEVEL} ${OPEN_MODE})
             endforeach()
         endforeach()
     endforeach()
 
-    minigzip_stdio_cmp(minigzip "detect-text" "test/data/lcet10.txt" -A)
-    minigzip_stdio_cmp(minigzip "detect-binary" "test/data/paper-100k.pdf" -A)
+    test_minigzip("detect-text" "test/data/lcet10.txt" -A)
+    test_minigzip("detect-binary" "test/data/paper-100k.pdf" -A)
+
+    set(CVES CVE-2002-0059 CVE-2004-0797 CVE-2005-1849 CVE-2005-2096)
+    foreach(CVE ${CVES})
+        set(CVE_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:minigzip> -d)
+        add_test(NAME ${CVE}
+            COMMAND ${CMAKE_COMMAND}
+            "-DCOMMAND=${CVE_COMMAND}"
+            -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/${CVE}/test.gz
+            "-DSUCCESS_EXIT=0;1"
+            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+    endforeach()
 
     if(NOT WIN32 AND ZLIB_COMPAT)
         add_executable(CVE-2003-0107 test/CVE-2003-0107.c)
@@ -1203,104 +1156,75 @@ if(ZLIB_ENABLE_TESTS)
         COMMAND ${CMAKE_COMMAND}
         "-DCOMMAND=${MAKEFIXED_COMMAND}"
         -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/inffixed._h
-        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-
-    add_test(NAME makefixed-cmp
-        COMMAND ${CMAKE_COMMAND} -E compare_files
-            ${CMAKE_CURRENT_SOURCE_DIR}/inffixed.h
-            ${CMAKE_CURRENT_SOURCE_DIR}/inffixed._h)
+        -DCOMPARE=${CMAKE_CURRENT_SOURCE_DIR}/inffixed.h
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-compare.cmake)
 
     set(MAKETREES_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:maketrees>)
     add_test(NAME maketrees
         COMMAND ${CMAKE_COMMAND}
         "-DCOMMAND=${MAKETREES_COMMAND}"
         -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/trees._h
-        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-
-    add_test(NAME maketrees-cmp
-        COMMAND ${CMAKE_COMMAND} -E compare_files
-            ${CMAKE_CURRENT_SOURCE_DIR}/trees.h
-            ${CMAKE_CURRENT_SOURCE_DIR}/trees._h)
+        -DCOMPARE=${CMAKE_CURRENT_SOURCE_DIR}/trees.h
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-compare.cmake)
 
     set(MAKECRCT_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:makecrct>)
     add_test(NAME makecrct
         COMMAND ${CMAKE_COMMAND}
         "-DCOMMAND=${MAKECRCT_COMMAND}"
         -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/crc32._h
-        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-
-    add_test(NAME makecrct-cmp
-        COMMAND ${CMAKE_COMMAND} -E compare_files
-            ${CMAKE_CURRENT_SOURCE_DIR}/crc32.h
-            ${CMAKE_CURRENT_SOURCE_DIR}/crc32._h)
+        -DCOMPARE=${CMAKE_CURRENT_SOURCE_DIR}/crc32.h
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-compare.cmake)
 
     set(INFCOVER_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:infcover>)
     add_test(NAME infcover COMMAND ${INFCOVER_COMMAND})
 
-    set(GH_361_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:minigzip> -4)
     add_test(NAME GH-361
         COMMAND ${CMAKE_COMMAND}
-        "-DCOMMAND=${GH_361_COMMAND}"
+        "-DTARGET=${MINIGZIP_COMMAND}"
+        "-DCOMPRESS_ARGS=-c;-d;-4"
         -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/GH-361/test.txt
-        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-compress.cmake)
 
-    set(GH_364_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:switchlevels> 1 5 9 3)
     add_test(NAME GH-364
-            COMMAND ${CMAKE_COMMAND}
-            "-DCOMMAND=${GH_364_COMMAND}"
-            -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/GH-364/test.bin
-            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-
-    set(GH_382_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:minideflate> -c -m 1 -w -15 -1 -s 4)
-    add_test(NAME GH-382-deflate COMMAND
-            COMMAND ${CMAKE_COMMAND}
-            "-DCOMMAND=${GH_382_COMMAND}"
-            -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/GH-382/defneg3.dat
-            -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/GH-382/defneg3.dat.zz
-            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-
-    set(GH_382_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:minideflate> -c -d -m 1 -w -15)
-    add_test(NAME GH-382-inflate COMMAND
-            COMMAND ${CMAKE_COMMAND}
-            "-DCOMMAND=${GH_382_COMMAND}"
-            -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/GH-382/defneg3.dat.zz
-            -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/GH-382/defneg3.dat.out
-            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+        COMMAND ${CMAKE_COMMAND}
+        "-DCOMPRESS_TARGET=${SWITCHLEVELS_COMMAND}"
+        "-DCOMPRESS_ARGS=1;5;9;3"
+        "-DDECOMPRESS_TARGET=${MINIGZIP_COMMAND}"
+        -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/GH-364/test.bin
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-compress.cmake)
 
-    add_test(NAME GH-382-cmp
-            COMMAND ${CMAKE_COMMAND} -E compare_files
-            ${CMAKE_CURRENT_SOURCE_DIR}/test/GH-382/defneg3.dat
-            ${CMAKE_CURRENT_SOURCE_DIR}/test/GH-382/defneg3.dat.out)
+    add_test(NAME GH-382
+        COMMAND ${CMAKE_COMMAND}
+        "-DTARGET=${MINIDEFLATE_COMMAND}"
+        "-DCOMPRESS_ARGS=-c;-m;1;-w;-15;-1;-s;4"
+        "-DDECOMPRESS_ARGS=-c;-d;-m;1;-w;-15"
+        -DGZIP_VERIFY=OFF
+        -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/GH-382/defneg3.dat
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-compress.cmake)
 
-    set(GH_536_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:switchlevels> 6 9744 1 91207)
     add_test(NAME GH-536-segfault
-            COMMAND ${CMAKE_COMMAND}
-            "-DCOMMAND=${GH_536_COMMAND}"
-            -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/data/lcet10.txt
-            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+        COMMAND ${CMAKE_COMMAND}
+        "-DCOMPRESS_TARGET=${SWITCHLEVELS_COMMAND}"
+        "-DCOMPRESS_ARGS=6;9744;1;91207"
+        "-DDECOMPRESS_TARGET=${MINIGZIP_COMMAND}"
+        -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/data/lcet10.txt
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-compress.cmake)
 
-    set(GH_536_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:switchlevels> 6 88933 1 195840 2 45761)
     add_test(NAME GH-536-incomplete-read
-            COMMAND ${CMAKE_COMMAND}
-            "-DCOMMAND=${GH_536_COMMAND}"
-            -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/data/lcet10.txt
-            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-
-    set(GH_536_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:switchlevels> 6 15248 1 1050 2 25217)
-    add_test(NAME GH-536-deflate-zero-stored-block
-            COMMAND ${CMAKE_COMMAND}
-            "-DCOMMAND=${GH_536_COMMAND}"
-            -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/data/lcet10.txt
-            -DOUTPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/data/lcet10-zl.txt.gz
-            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
-
-    set(GH_536_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:minigzip> -d)
-    add_test(NAME GH-536-inflate-zero-stored-block
         COMMAND ${CMAKE_COMMAND}
-        "-DCOMMAND=${GH_536_COMMAND}"
-        -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/data/lcet10-zl.txt.gz
-        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+        "-DCOMPRESS_TARGET=${SWITCHLEVELS_COMMAND}"
+        "-DCOMPRESS_ARGS=6;88933;1;195840;2;45761"
+        "-DDECOMPRESS_TARGET=${MINIGZIP_COMMAND}"
+        -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/data/lcet10.txt
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-compress.cmake)
 
+    add_test(NAME GH-536-zero-stored-block
+        COMMAND ${CMAKE_COMMAND}
+        "-DCOMPRESS_TARGET=${SWITCHLEVELS_COMMAND}"
+        "-DCOMPRESS_ARGS=6;15248;1;1050;2;25217"
+        "-DDECOMPRESS_TARGET=${MINIGZIP_COMMAND}"
+        -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/data/lcet10.txt
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-compress.cmake)
 endif()
 
 FEATURE_SUMMARY(WHAT ALL INCLUDE_QUIET_PACKAGES)
diff --git a/README.md b/README.md
index 2faf02691..e146e337b 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,7 @@ Features
 * Includes improvements from Cloudflare and Intel forks
 * Configure, CMake, and NMake build system support
 * Modern C99 syntax and a clean code layout
-* Over 200 CMake unit tests
+* Comprehensive set of CMake unit tests
 
 Build
 -----
diff --git a/cmake/run-and-compare.cmake b/cmake/run-and-compare.cmake
new file mode 100644
index 000000000..deeec1b26
--- /dev/null
+++ b/cmake/run-and-compare.cmake
@@ -0,0 +1,24 @@
+if(NOT OUTPUT OR NOT COMPARE OR NOT COMMAND)
+    message(FATAL_ERROR "Run and compare arguments missing")
+endif()
+
+if(INPUT)
+    # Run command with stdin input and redirect stdout to output
+    execute_process(COMMAND ${CMAKE_COMMAND}
+        "-DCOMMAND=${COMMAND}"
+        -DINPUT=${INPUT}
+        -DOUTPUT=${OUTPUT}
+        "-DSUCCESS_EXIT=${SUCCESS_EXIT}"
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+else()
+    # Run command and redirect stdout to output
+    execute_process(COMMAND ${CMAKE_COMMAND}
+        "-DCOMMAND=${COMMAND}"
+        -DOUTPUT=${OUTPUT}
+        "-DSUCCESS_EXIT=${SUCCESS_EXIT}"
+        -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+endif()
+
+# Compare that output is equal to specified file
+execute_process(COMMAND ${CMAKE_COMMAND}
+        -E compare_files ${COMPARE} ${OUTPUT})
\ No newline at end of file
diff --git a/cmake/run-and-redirect.cmake b/cmake/run-and-redirect.cmake
index e557e0804..50eee981d 100644
--- a/cmake/run-and-redirect.cmake
+++ b/cmake/run-and-redirect.cmake
@@ -1,3 +1,4 @@
+# If no output is specified, discard output
 if(NOT OUTPUT)
     if(WIN32)
         set(OUTPUT NUL)
@@ -5,22 +6,29 @@ if(NOT OUTPUT)
         set(OUTPUT /dev/null)
     endif()
 endif()
+
 if(INPUT)
+    # Execute with both stdin and stdout file
     execute_process(COMMAND ${COMMAND}
         RESULT_VARIABLE CMD_RESULT
         INPUT_FILE ${INPUT}
         OUTPUT_FILE ${OUTPUT})
 else()
+    # Execute with only stdout file
     execute_process(COMMAND ${COMMAND}
         RESULT_VARIABLE CMD_RESULT
         OUTPUT_FILE ${OUTPUT})
 endif()
+
+# Check if exit code is in list of successful exit codes
 if(SUCCESS_EXIT)
     list(FIND SUCCESS_EXIT ${CMD_RESULT} _INDEX)
     if (${_INDEX} GREATER -1)
         set(CMD_RESULT 0)
     endif()
 endif()
+
+# Check to see if successful
 if(CMD_RESULT)
     message(FATAL_ERROR "${COMMAND} failed: ${CMD_RESULT}")
 endif()
diff --git a/cmake/test-compress.cmake b/cmake/test-compress.cmake
new file mode 100644
index 000000000..47fdc2790
--- /dev/null
+++ b/cmake/test-compress.cmake
@@ -0,0 +1,101 @@
+if(TARGET)
+    set(COMPRESS_TARGET ${TARGET})
+    set(DECOMPRESS_TARGET ${TARGET})
+endif()
+
+if(NOT INPUT OR NOT COMPRESS_TARGET OR NOT DECOMPRESS_TARGET)
+    message(FATAL_ERROR "Compress test arguments missing")
+endif()
+
+# Set default values
+if(NOT COMPRESS_ARGS)
+    set(COMPRESS_ARGS -c -k)
+endif()
+if(NOT DECOMPRESS_ARGS)
+    set(DECOMPRESS_ARGS -d -c)
+endif()
+if(NOT GZIP_VERIFY)
+    set(GZIP_VERIFY ON)
+endif()
+if(NOT SUCCESS_EXIT)
+    set(SUCCESS_EXIT 0)
+endif()
+
+# Generate unique output path so multiple tests can be executed at the same time
+if(NOT OUTPUT)
+    string(RANDOM UNIQUE_ID)
+    set(OUTPUT ${INPUT}-${UNIQUE_ID})
+endif()
+string(REPLACE ".gz" "" OUTPUT "${OUTPUT}")
+
+# Compress input file
+set(COMPRESS_COMMAND ${COMPRESS_TARGET} ${COMPRESS_ARGS})
+
+execute_process(COMMAND ${CMAKE_COMMAND}
+    "-DCOMMAND=${COMPRESS_COMMAND}"
+    -DINPUT=${INPUT}
+    -DOUTPUT=${OUTPUT}.gz
+    "-DSUCCESS_EXIT=${SUCCESS_EXIT}"
+    -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+
+# Decompress output
+set(DECOMPRESS_COMMAND ${DECOMPRESS_TARGET} ${DECOMPRESS_ARGS})
+
+execute_process(COMMAND ${CMAKE_COMMAND}
+    "-DCOMMAND=${DECOMPRESS_COMMAND}"
+    -DINPUT=${OUTPUT}.gz
+    -DOUTPUT=${OUTPUT}.out
+    "-DSUCCESS_EXIT=${SUCCESS_EXIT}"
+    -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+
+# Compare decompressed output with original input file
+execute_process(COMMAND ${CMAKE_COMMAND}
+    -E compare_files ${INPUT} ${OUTPUT}.out)
+
+if(GZIP_VERIFY AND NOT "${COMPRESS_ARGS}" MATCHES "-T")
+    # Transparent writing does not use gzip format
+    find_program(GZIP gzip)
+    if(GZIP)
+        # Check gzip can decompress our compressed output
+        set(GZ_DECOMPRESS_COMMAND ${GZIP} --decompress)
+
+        execute_process(COMMAND ${CMAKE_COMMAND}
+            "-DCOMMAND=${GZ_DECOMPRESS_COMMAND}"
+            -DINPUT=${OUTPUT}.gz
+            -DOUTPUT=${OUTPUT}.gzip.out
+            "-DSUCCESS_EXIT=${SUCCESS_EXIT}"
+            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+
+        # Compare gzip output with original input file
+        execute_process(COMMAND ${CMAKE_COMMAND}
+            -E compare_files ${INPUT} ${OUTPUT}.gzip.out)
+
+        # Compress input file with gzip
+        set(GZ_COMPRESS_COMMAND ${GZIP} --stdout)
+
+        execute_process(COMMAND ${CMAKE_COMMAND}
+            "-DCOMMAND=${GZ_COMPRESS_COMMAND}"
+            -DINPUT=${INPUT}
+            -DOUTPUT=${OUTPUT}.gzip.gz
+            "-DSUCCESS_EXIT=${SUCCESS_EXIT}"
+            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+
+        # Check minigzip can decompress gzip compressed output
+        execute_process(COMMAND ${CMAKE_COMMAND}
+            "-DCOMMAND=${DECOMPRESS_COMMAND}"
+            -DINPUT=${OUTPUT}.gzip.gz
+            -DOUTPUT=${OUTPUT}.gzip.out
+            "-DSUCCESS_EXIT=${SUCCESS_EXIT}"
+            -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake)
+
+        # Compare original input file with gzip decompressed output
+        execute_process(COMMAND ${CMAKE_COMMAND}
+            -E compare_files ${INPUT} ${OUTPUT}.gzip.out)
+
+        # Cleanup temporary files
+        file(REMOVE ${OUTPUT}.gzip.gz ${OUTPUT}.gzip.out)
+    endif()
+endif()
+
+# Cleanup temporary files
+file(REMOVE ${OUTPUT}.gz ${OUTPUT}.out)