Add hack to remove build dependency on python2-pytest

Since this package deals with strings, it should be tested on
Python 2 if we ship it.
However, pytest has very many dependencies, and chardet's tests
are very simple. It's not hard to run the tests without pytest.

I assume that python2-chardet will be removed from Fedora before
upstream chanes the testing mechanism, so it's OK to use this
crude hack to get rid of the python2-pytest debendency.

hack-pytest.patch

@@ -0,0 +1,41 @@
+diff -rU3 chardet-3.0.4-orig/test.py chardet-3.0.4/test.py
+--- chardet-3.0.4-orig/test.py	2019-10-03 13:29:21.914988914 +0200
++++ chardet-3.0.4/test.py	2019-10-03 13:51:34.783256817 +0200
+@@ -19,7 +19,27 @@
+     HAVE_HYPOTHESIS = True
+ except ImportError:
+     HAVE_HYPOTHESIS = False
+-import pytest
++try:
++    import pytest
++except ImportError:
++    class pytest:
++        """Just enough pytest API to run the tests"""
++        class mark:
++            @staticmethod
++            def parametrize(name_string, cases):
++                """Run all given tests"""
++                def decorator(func):
++                    names = name_string.split(', ')
++                    for case in cases:
++                        print(case)
++                        func(**{name: val for name, val in zip(names, case)})
++                return decorator
++
++            @staticmethod
++            def xfail():
++                """Don't run this test"""
++                pass
++
+ 
+ import chardet
+ 
+@@ -59,7 +79,7 @@
+             full_path = join(path, file_name)
+             test_case = full_path, encoding
+             if full_path in EXPECTED_FAILURES:
+-                test_case = pytest.param(*test_case, marks=pytest.mark.xfail)
++                continue
+             yield test_case
+ 
+ 

python-chardet.spec

@@ -1,7 +1,7 @@
 %global pypi_name chardet
 Name:           python-%{pypi_name}
 Version:        3.0.4
-Release:        12%{?dist}
+Release:        13%{?dist}
 Summary:        Character encoding auto-detection in Python
 License:        LGPLv2
 URL:            https://github.com/%{pypi_name}/%{pypi_name}
@@ -10,6 +10,9 @@ Source0:        %pypi_source
 # pytest 4 support
 Patch1:         https://github.com/chardet/chardet/pull/174.patch
 
+# Don't require python2-pytest
+Patch2:         hack-pytest.patch
+
 BuildArch:      noarch
 BuildRequires:  python2-devel
 BuildRequires:  python2-setuptools
@@ -20,7 +23,6 @@ BuildRequires:  python3-setuptools
 # Circular dependency on pytest
 %bcond_without tests
 %if %{with tests}
-BuildRequires:  python2-pytest
 BuildRequires:  python3-pytest
 %endif
 
@@ -62,7 +64,7 @@ rm %{buildroot}%{_bindir}/*
 
 %if %{with tests}
 %check
-%{__python2} -m pytest -v
+%{__python2} test.py
 %{__python3} -m pytest -v
 %endif
 
@@ -81,6 +83,9 @@ rm %{buildroot}%{_bindir}/*
 
 
 %changelog
+* Thu Oct 03 2019 Petr Viktorin <pviktori@redhat.com> - 3.0.4-13
+- Add hack to remove build dependency on python2-pytest
+
 * Thu Aug 15 2019 Miro Hrončok <mhroncok@redhat.com> - 3.0.4-12
 - Rebuilt for Python 3.8