Update install instruction (openvinotoolkit#469)

* Update install instruction

* Add a new virtualenv test

* Remove onnx dependency from INSTALL_REQUIRES; rollback changes

* Put onnx dependency to tests/requirements.txt

* Return a test back

setup.py

@@ -51,7 +51,6 @@ def find_version(*file_paths):
                     "jstyleson>=0.0.2",
                     "numpy>=1.19",
                     "tqdm>=4.54.1",
-                    "onnx>=1.8.0",
                     "pytest-mock>=3.3.1",
                     "jsonschema>=3.2.0",
                     "natsort>=7.1.0",

tests/requirements.txt

@@ -2,3 +2,4 @@ yattag>=1.14.0
 prettytable>=2.0.0
 # Required for test_algo_common not to fail because of google namespace issues
 protobuf==3.14.0
+onnx>=1.8.0

tests/test_install.py

@@ -20,22 +20,34 @@
 INSTALL_CHECKS_FILENAME = 'install_checks.py'
 
 
-@pytest.fixture(name="package_type", params=["install", "develop", "sdist", "bdist_wheel", "pypi"])
+@pytest.fixture(name="venv_type",
+                params=["virtualenv", "venv"])
+def venv_type_(request):
+    return request.param
+
+
+@pytest.fixture(name="package_type",
+                params=["install", "develop", "sdist", "bdist_wheel", "pypi"])
 def package_type_(request):
     return request.param
 
 
-def test_install(install_type, tmp_path, package_type):
+def test_install(install_type, tmp_path, package_type, venv_type):
     if install_type is None:
         pytest.skip("Please specify type of installation")
     venv_path = tmp_path / 'venv'
     venv_path.mkdir()
 
-    version_string = "{}.{}".format(sys.version_info[0], sys.version_info[1])
-    subprocess.call("virtualenv -ppython{} {}".format(version_string, venv_path), shell=True)
     python_executable_with_venv = ". {0}/bin/activate && {0}/bin/python".format(venv_path)
     pip_with_venv = ". {0}/bin/activate && {0}/bin/pip".format(venv_path)
 
+    version_string = "{}.{}".format(sys.version_info[0], sys.version_info[1])
+    if venv_type == 'virtualenv':
+        subprocess.call("virtualenv -ppython{} {}".format(version_string, venv_path), shell=True)
+    elif venv_type == 'venv':
+        subprocess.call("python{} -m venv {}".format(version_string, venv_path), shell=True)
+        subprocess.call("{} install --upgrade pip".format(pip_with_venv), shell=True)
+
     run_path = tmp_path / 'run'
     run_path.mkdir()