feat cmake: use the same venv for all userver testsuite tests

91b7c672b03c31afcd2730480c76612dd3d0d12f

Author: Anton3

cmake/UserverTestsuite.cmake

@@ -194,14 +194,22 @@ function(userver_testsuite_add)
           "PYTHON_BINARY and REQUIREMENTS options are incompatible")
     endif()
     set(python_binary "${ARG_PYTHON_BINARY}")
-  else()
+  elseif(ARG_REQUIREMENTS)
     userver_testsuite_requirements(REQUIREMENTS_FILES_VAR requirements_files)
     list(APPEND requirements_files ${ARG_REQUIREMENTS})
     userver_venv_setup(
         NAME "${TESTSUITE_TARGET}"
         REQUIREMENTS ${requirements_files}
         PYTHON_OUTPUT_VAR python_binary
     )
+  else()
+    userver_testsuite_requirements(REQUIREMENTS_FILES_VAR requirements_files)
+    userver_venv_setup(
+        NAME userver-default
+        REQUIREMENTS ${requirements_files}
+        PYTHON_OUTPUT_VAR python_binary
+        UNIQUE
+    )
   endif()
 
   if(NOT python_binary)

samples/mongo-support/CMakeLists.txt

@@ -8,7 +8,5 @@ add_executable(${PROJECT_NAME} ${SOURCES})
 target_link_libraries(${PROJECT_NAME} userver::mongo)
 
 # /// [testsuite - cmake]
-userver_testsuite_add_simple(
-    PYTHON_BINARY "${TESTSUITE_PYTHON_BINARY}"
-)
+userver_testsuite_add_simple()
 # /// [testsuite - cmake]

samples/postgres-support/CMakeLists.txt

@@ -7,6 +7,4 @@ file(GLOB_RECURSE SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp)
 add_executable(${PROJECT_NAME} ${SOURCES})
 target_link_libraries(${PROJECT_NAME} userver::postgresql)
 
-userver_testsuite_add_simple(
-    PYTHON_BINARY "${TESTSUITE_PYTHON_BINARY}"
-)
+userver_testsuite_add_simple()