capture: improve message with DontReadFromInput's IOError

Ref: https://github.com/pytest-dev/pytest/pull/4996#issuecomment-479686487
2019-10-22 02:01:50 +02:00
parent 978c7ae1b7
commit 3c14dd7f55
1 changed files with 3 additions and 1 deletions
--- a/src/_pytest/capture.py
+++ b/src/_pytest/capture.py
@@ -703,7 +703,9 @@ class DontReadFromInput:
    encoding = None

    def read(self, *args):
-        raise IOError("reading from stdin while output is captured")
+        raise IOError(
+            "pytest: reading from stdin while output is captured!  Consider using `-s`."
+        )

    readline = read
    readlines = read