Index: tests/runners.py
--- tests/runners.py.orig
+++ tests/runners.py
@@ -83,7 +83,7 @@ def _expect_platform_shell(shell):
     if WINDOWS:
         assert shell.endswith("cmd.exe")
     else:
-        assert shell == "/bin/bash"
+        assert shell == "/bin/sh"
 
 
 def make_tcattrs(cc_is_ints=True, echo=False):