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Test Suite

# Automated Test Machines

We use Github Actions with a setup that is similar to that [described for DynamoRIO[(https://dynamorio.org/page_test_suite.html).

# Test Suite

The test suite for Dr. Memory resides in the tests/ directory. The tests are applications that we execute under control of Dr. Memory.

## Building and Running Tests

The tests are built by default along with the rest of Dr. Memory.

CTest is used to run the tests. After building, you can use the test make target to run them:

make -j6
make test

You can also invoke ctest directly, which gives greater control over which subsets of the tests are run. Use ctest -N to see the list of tests and which number is assigned to each. Then you can use ctest -I x,y to run all tests from number x to number y, and the -V parameter to display the command line and the output of the test. For example:

ctest -V -I 49,49

You can also specify tests using inclusion and exclusion regular expressions. For example:

ctest -R 'suppress|realloc'

will run all tests with the string "suppress" or the string "realloc" in their names, while

ctest -E alloc

will run all tests except those with alloc in their names.

If you are using CTest version 2.8 or later, you can run tests in parallel by passing -jN to ctest on the command line:

ctest -j5

As an alternative to using -V to display the test command line and output during executing, CTest stores that information (even when not run with -V) in the Testing/Temporary/LastTest.log file in the build directory.

## Test Output

Each test produces two types of output: stdout and the Dr. Memory results file. Both are checked against expected output, stdout versus a .out file and the results file versus a .res file. The checking is not a regular diff and simply looks for each line. We may want to change this to a stronger diff with regular expression support in the future.

## Pre-Commit Test Suite

The tests/runsuite.cmake script is used to execute a series of builds and test runs. Running make test in a single build directory is not sufficient to test all of the configurations that we support.

The runsuite.cmake script is meant to be executed from an empty directory. It creates a subdirectory for each build in the suite. Use ctest -S to execute the script. Here is an example:

mkdir ../build_suite
cd ../build_suite
ctest -S ../drmemory/tests/runsuite.cmake

You can pass -V to ctest to see the results as the test suite runs. Note that it is normal to have ctest output strings such as "No tests were found!!!" as we have builds for which we run no tests (particularly in the short suite). It is also expected to have an error at the end of the suite (if run with -V):

CMake Error: Some required settings in the configuration file were missing:
CTEST_SOURCE_DIRECTORY = E:/derek/drmemory/src/suite/..
CTEST_BINARY_DIRECTORY = (Null)
CTEST_COMMAND = c:/PROGRA~2/CMAKE2~1.6/bin/ctest.exe

This warning is an artifact of how CTest assumes we've set things up and can be ignored.

At the end of the suite a file called results.txt will be created and displayed. It shows configure failures, build failures, and test failures.

Here are sample results from running the test suite:

### ============================================
RESULTS
drheapstat-dbg-32: all 19 tests passed
drheapstat-rel-32: build successful; no tests for this build
drmemory-dbg-32: all 23 tests passed
drmemory-rel-32: build successful; no tests for this build
final package: build successful; no tests for this build
Error in read script: /home/bruening/work/build/drmem_suite/src/tests/runsuite.cmake

The "Error in read script" is expected: ignore it.

Here is an example of running the test suite on Windows from the cmd shell on a new checkout, with the -V flag for more verbose output:

cd "c:\Program Files (x86)\Microsoft Visual Studio *"
VC\vcvarsall.bat
set DDKROOT=C:/derek/ddk
set FLEXROOT=C:/derek/flex_sdk_4.1
cd \derek\drmemory
git clone https://github.com/DynamoRIO/drmemory.git
cd drmemory
make/git/devsetup.sh
cd \derek\drmemory\build_suite
"c:\Program Files (x86)\CMake 2.8\bin\ctest.exe" -V -S c:/derek/drmemory/src/tests/runsuite.cmake

## Embedded Versus Separate DynamoRIO

DynamoRIO is included inside the Dr. Memory source tree as an svn:externals property. We support both building that embedded DR along with pointing to an already-built separate DR export tree. Whenever a new feature from DynamoRIO is used within Dr. Memory, be sure to update the svn:externals following the instructions at UpdatingDR. In addition, be sure to run the pre-commit test suite using the embedded DR, or be very careful if using an external DR that it matches the svn:externals version.

## Cross-Compilation and Android Testing

The test suite includes cross-compilation tests to ensure that the ARM and Android builds are not broken. If a cross-compiler is not found on the PATH, these builds will fail, but they are considered optional, so the whole suite will not be considered a failure. However, we recommend installing the cross-compilers and placing them on your PATH for more thorough testing.

If you have an Android device set up for access through the adb shell utility, the Android build is capable of automatically copying binaries to the device and running tests. If both the Android cross-compiler and adb are on your PATH, and adb status indicates an attached device, the tests will be run.