Run tests with Actions

[abitrolly]

They fail on Python 2.7 for some reason, but Python 3 works ok.

https://github.com/abitrolly/requests-lsp/actions/runs/803484208

Failed Python 2 run

============================= test session starts ==============================
platform linux2 -- Python 2.7.18, pytest-4.6.11, py-1.10.0, pluggy-0.13.1
rootdir: /home/runner/work/requests-lsp/requests-lsp
collected 54 items

tests/test_error.py .....................                                [ 38%]
tests/test_request.py ..................F.F............                  [100%]

=================================== FAILURES ===================================
_ test_build_body_options_with_some_form_data[form0-field1=data1&field2=data2] _

form = {'field1': 'data1', 'field2': 'data2'}
expected_encoded_form = 'field1=data1&field2=data2'

    @pytest.mark.parametrize("form, expected_encoded_form", (
        (
            {"field1": "data1", "field2": "data2"},
            "field1=data1&field2=data2",
        ),
        (
            [("field1", "data1"), ("field2", "data2")],
            "field1=data1&field2=data2",
        ),
        (
            {"field1": "data1", "field2": "datüm"},
            "field1=data1&field2=dat%C3%BCm",
        ),
    ))
    def test_build_body_options_with_some_form_data(form, expected_encoded_form):
        prepared_request = PreparedRequest()
        prepared_request.prepare(
            url="http://somefakeurl",
            method="POST",
            data=form,
        )
        curl_request = CURLRequest(prepared_request)
    
        curl_options = curl_request.build_body_options()
    
>       assert curl_options == ((pycurl.POSTFIELDS, expected_encoded_form),)
E       AssertionError: assert ((10015, 'fie...eld1=data1'),) == ((10015, 'fiel...eld2=data2'),)
E         At index 0 diff: (10015, 'field2=data2&field1=data1') != (10015, 'field1=data1&field2=data2')
E         Use -v to get the full diff

tests/test_request.py:280: AssertionError
_ test_build_body_options_with_some_form_data[form2-field1=data1&field2=dat%C3%BCm] _

form = {'field1': 'data1', 'field2': 'dat\xc3\xbcm'}
expected_encoded_form = 'field1=data1&field2=dat%C3%BCm'

    @pytest.mark.parametrize("form, expected_encoded_form", (
        (
            {"field1": "data1", "field2": "data2"},
            "field1=data1&field2=data2",
        ),
        (
            [("field1", "data1"), ("field2", "data2")],
            "field1=data1&field2=data2",
        ),
        (
            {"field1": "data1", "field2": "datüm"},
            "field1=data1&field2=dat%C3%BCm",
        ),
    ))
    def test_build_body_options_with_some_form_data(form, expected_encoded_form):
        prepared_request = PreparedRequest()
        prepared_request.prepare(
            url="http://somefakeurl",
            method="POST",
            data=form,
        )
        curl_request = CURLRequest(prepared_request)
    
        curl_options = curl_request.build_body_options()
    
>       assert curl_options == ((pycurl.POSTFIELDS, expected_encoded_form),)
E       AssertionError: assert ((10015, 'fie...eld1=data1'),) == ((10015, 'fiel...dat%C3%BCm'),)
E         At index 0 diff: (10015, 'field2=dat%C3%BCm&field1=data1') != (10015, 'field1=data1&field2=dat%C3%BCm')
E         Use -v to get the full diff

tests/test_request.py:280: AssertionError
===================== 2 failed, 52 passed in 0.31 seconds ======================
Error: Process completed with exit code 1.

[paivett]

I have implemented my own actions, running also some integration tests with httpbin service.
Regarding py2 fail, it seems a problem of order of parameters, but I will not support py2.