skip_missing_interpreters: fix bool handling and add appropriate test, thanks hpk42@ for the tip!

2 files changed, 10 insertions, 2 deletions

diff --git a/tests/test_config.py b/tests/test_config.py
index 86f93e7..ff743c4 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -943,7 +943,7 @@ class TestGlobalOptions:
         config = newconfig([], inisource)
         assert config.minversion == "3.0"
 
-    def test_skip_missing_interpreters(self, tmpdir, newconfig, monkeypatch):
+    def test_skip_missing_interpreters_true(self, tmpdir, newconfig, monkeypatch):
         inisource = """
             [tox]
             skip_missing_interpreters = True
@@ -951,6 +951,14 @@ class TestGlobalOptions:
         config = newconfig([], inisource)
         assert config.option.skip_missing_interpreters
 
+    def test_skip_missing_interpreters_false(self, tmpdir, newconfig, monkeypatch):
+        inisource = """
+            [tox]
+            skip_missing_interpreters = False
+        """
+        config = newconfig([], inisource)
+        assert not config.option.skip_missing_interpreters
+
     def test_defaultenv_commandline(self, tmpdir, newconfig, monkeypatch):
         config = newconfig(["-epy24"], "")
         env = config.envconfigs['py24']
diff --git a/tox/_config.py b/tox/_config.py
index 45d626a..4f89d00 100644
--- a/tox/_config.py
+++ b/tox/_config.py
@@ -241,7 +241,7 @@ class parseini:
 
         if not config.option.skip_missing_interpreters:
             config.option.skip_missing_interpreters = \
-                reader.getdefault(toxsection, "skip_missing_interpreters", None)
+                reader.getbool(toxsection, "skip_missing_interpreters", False)
 
         # determine indexserver dictionary
         config.indexserver = {'default': IndexServerConfig('default')}