fix regression bugs in tests running on python2

(cherry picked from commit 6d1ae09)

tests/conftest.py

@@ -24,10 +24,10 @@
 
 import pytest
 import os.path
+import sys
 
 SCRIPT_PATH = os.path.dirname(os.path.realpath(__file__))
 
-
 @pytest.fixture
 def fixtures_dir():
     return os.path.join(SCRIPT_PATH, "fixtures")

tests/test_build_automation_c.py

@@ -28,6 +28,9 @@
 
 import pytest
 
+if sys.version_info[0] == 2:
+    FileNotFoundError = IOError
+
 SCRIPT_PATH = path.dirname(path.realpath(__file__))
 
 requires_py27_or_py35_or_greater = pytest.mark.skipif(

tests/test_cli.py

@@ -26,15 +26,20 @@
 import subprocess
 from subprocess import call, check_output
 from textwrap import dedent
+import sys
 
 import pytest
 from yasha.cli import cli
 from click.testing import CliRunner
 
+
 def wrap(text):
     return dedent(text).lstrip()
 
 
+PY2 = True if sys.version_info[0] == 2 else False
+
+
 @pytest.fixture(params=('json', 'yaml', 'yml', 'toml'))
 def vartpl(request):
     template = {
@@ -356,8 +361,8 @@ def test_broken_extensions_name_error(tmpdir):
 
 
 def test_render_template_from_stdin_to_stdout():
-    cmd = r'yasha --foo=bar -'
-    out = check_output(cmd, shell=True, input=b"{{ foo }}")
+    cmd = r'echo {{ foo }} | yasha --foo=bar -'
+    out = check_output(cmd, shell=True)
     assert out == b'bar'
 
 
@@ -374,24 +379,24 @@ def test_json_template(tmpdir):
 
 def test_mode_is_none():
     """gh-42, and gh-44"""
-    cmd = r'yasha -'
-    out = check_output(cmd, shell=True, input=b"{{ foo }}")
+    cmd = r'echo {{ foo }} | yasha -'
+    out = check_output(cmd, shell=True)
     assert out == b''
 
 
 def test_mode_is_pedantic():
     """gh-42, and gh-48"""
     with pytest.raises(subprocess.CalledProcessError) as err:
-        cmd = r'yasha --mode=pedantic -'
-        out = check_output(cmd, shell=True, stderr=subprocess.STDOUT, input=b"{{ foo }}")
+        cmd = r'echo {{ foo }} | yasha --mode=pedantic -'
+        out = check_output(cmd, shell=True, stderr=subprocess.STDOUT)
     out = err.value.output
     assert out == b"Error: Variable 'foo' is undefined\n"
 
 
 def test_mode_is_debug():
     """gh-44"""
-    cmd = r'yasha --mode=debug -'
-    out = check_output(cmd, shell=True, input=b"{{ foo }}")
+    cmd = r'echo {{ foo }} | yasha --mode=debug -'
+    out = check_output(cmd, shell=True)
     assert out == b'{{ foo }}'