From 2d4c13dba8e37466f4b0e71166394217657fd394 Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Wed, 19 Sep 2018 12:31:00 +0200
Subject: [PATCH] logging: del item.catch_log_handler only in teardown

Without this caplog.record_tuples etc is not available when using
`pdb.set_trace()` in a test.

Ref: https://github.com/pytest-dev/pytest/issues/3099
---
 src/_pytest/logging.py |  2 +-
 testing/test_pdb.py    | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/_pytest/logging.py b/src/_pytest/logging.py
index c9c65c4c18d..2d0f54a6454 100644
--- a/src/_pytest/logging.py
+++ b/src/_pytest/logging.py
@@ -445,8 +445,8 @@ def _runtest_for(self, item, when):
             try:
                 yield  # run test
             finally:
-                del item.catch_log_handler
                 if when == "teardown":
+                    del item.catch_log_handler
                     del item.catch_log_handlers
 
             if self.print_logs:
diff --git a/testing/test_pdb.py b/testing/test_pdb.py
index ed1c49a1acf..171391a4248 100644
--- a/testing/test_pdb.py
+++ b/testing/test_pdb.py
@@ -397,6 +397,22 @@ def test_1(capsys):
         child.read()
         self.flush(child)
 
+    def test_pdb_with_caplog_on_pdb_invocation(self, testdir):
+        p1 = testdir.makepyfile(
+            """
+            def test_1(capsys, caplog):
+                import logging
+                logging.getLogger(__name__).warning("some_warning")
+                assert 0
+        """
+        )
+        child = testdir.spawn_pytest('--pdb %s' % str(p1))
+        child.send("caplog.record_tuples\n")
+        child.expect_exact("[('test_pdb_with_caplog_on_pdb_invocation', 30, 'some_warning')]")
+        child.sendeof()
+        child.read()
+        self.flush(child)
+
     def test_set_trace_capturing_afterwards(self, testdir):
         p1 = testdir.makepyfile(
             """