misc: add support for boolean values in ezt (#14279)

tests/test_ezt.py

@@ -139,6 +139,17 @@ def test_datetime_qualifier(pub):
     assert output.getvalue() == '<p>02/01/2019 14:04</p>'
 
 
+def test_is_bool():
+    template = Template()
+    template.parse('<p>[is foo True]hello[end]</p>')
+    output = io.StringIO()
+    template.generate(output, {'foo': True})
+    assert output.getvalue() == '<p>hello</p>'
+    output = io.StringIO()
+    template.generate(output, {'foo': False})
+    assert output.getvalue() == '<p></p>'
+
+
 def test_unclosed_block():
     template = Template()
     with pytest.raises(UnclosedBlocksError):

wcs/qommon/ezt.py

@@ -657,6 +657,8 @@ def _get_value(value_ref, ctx):
         ob = ctx.defines[start]
     elif hasattr(ctx.data, start):
         ob = getattr(ctx.data, start)
+    elif refname in ('True', 'False'):
+        return bool(refname == 'True')
     else:
         raise UnknownReference(refname)