add before test variable

cibuildwheel/__main__.py

@@ -113,6 +113,7 @@ def main():
         repair_command_default = ''
     repair_command = get_option_from_environment('CIBW_REPAIR_WHEEL_COMMAND', platform=platform, default=repair_command_default)
     environment_config = get_option_from_environment('CIBW_ENVIRONMENT', platform=platform, default='')
+    before_test = get_option_from_environment('CIBW_BEFORE_TEST', platform=platform, default='')
 
     if test_extras:
         test_extras = '[{0}]'.format(test_extras)
@@ -154,6 +155,7 @@ def main():
         build_selector=build_selector,
         repair_command=repair_command,
         environment=environment,
+        before_test=before_test
     )
 
     if platform == 'linux':

cibuildwheel/linux.py

@@ -68,7 +68,7 @@ def get_python_configurations(build_selector):
     return [c for c in python_configurations if matches_platform(c.identifier) and build_selector(c.identifier)]
 
 
-def build(project_dir, output_dir, test_command, test_requires, test_extras, before_build, build_verbosity, build_selector, repair_command, environment, manylinux_images):
+def build(project_dir, output_dir, test_command, test_requires, test_extras, before_build, build_verbosity, build_selector, repair_command, environment, before_test, manylinux_images):
     try:
         subprocess.check_call(['docker', '--version'])
     except Exception:
@@ -154,6 +154,10 @@ def build(project_dir, output_dir, test_command, test_requires, test_extras, bef
 
                         echo "Running tests using `which python`"
 
+                        if [ ! -z {before_test} ]; then
+                            sh -c {before_test}
+                        fi
+
                         # Install the wheel we just built
                         # Note: If auditwheel produced two wheels, it's because the earlier produced wheel
                         # conforms to multiple manylinux standards. These multiple versions of the wheel are
@@ -202,6 +206,9 @@ def build(project_dir, output_dir, test_command, test_requires, test_extras, bef
             environment_exports='\n'.join(environment.as_shell_commands()),
             uid=os.getuid(),
             gid=os.getgid(),
+            before_test=shlex_quote(
+                prepare_command(before_test, project='/project') if before_test else ''
+            ),
         )
 
         container_name = 'cibuildwheel-{}'.format(uuid.uuid4())

cibuildwheel/macos.py

@@ -105,7 +105,7 @@ def install_pypy(version, url):
     return installation_bin_path
 
 
-def build(project_dir, output_dir, test_command, test_requires, test_extras, before_build, build_verbosity, build_selector, repair_command, environment):
+def build(project_dir, output_dir, test_command, test_requires, test_extras, before_build, build_verbosity, build_selector, repair_command, environment, before_test):
     abs_project_dir = os.path.abspath(project_dir)
     temp_dir = tempfile.mkdtemp(prefix='cibuildwheel')
     built_wheel_dir = os.path.join(temp_dir, 'built_wheel')
@@ -214,6 +214,10 @@ def build(project_dir, output_dir, test_command, test_requires, test_extras, bef
             # check that we are using the Python from the virtual environment
             call(['which', 'python'], env=virtualenv_env)
 
+            if before_test:
+                before_test_prepared = prepare_command(before_test, project=abs_project_dir)
+                call(before_test_prepared, env=virtualenv_env, shell=True)
+
             # install the wheel
             call(['pip', 'install', repaired_wheel + test_extras], env=virtualenv_env)
 

cibuildwheel/windows.py

@@ -87,7 +87,7 @@ def install_pypy(version, arch, url):
     return installation_path
 
 
-def build(project_dir, output_dir, test_command, test_requires, test_extras, before_build, build_verbosity, build_selector, repair_command, environment):
+def build(project_dir, output_dir, test_command, test_requires, test_extras, before_build, build_verbosity, build_selector, repair_command, environment, before_test):
     abs_project_dir = os.path.abspath(project_dir)
     temp_dir = tempfile.mkdtemp(prefix='cibuildwheel')
     built_wheel_dir = os.path.join(temp_dir, 'built_wheel')
@@ -193,6 +193,10 @@ def build(project_dir, output_dir, test_command, test_requires, test_extras, bef
             # check that we are using the Python from the virtual environment
             shell(['which', 'python'], env=virtualenv_env)
 
+            if before_test:
+                before_test_prepared = prepare_command(before_test, project=abs_project_dir)
+                shell([before_test_prepared], env=virtualenv_env)
+
             # install the wheel
             shell(['pip', 'install', repaired_wheel + test_extras], env=virtualenv_env)