terminal: fix line offset with skip reports

The original fix in #2548 was
wrong, and was likely meant to fix the use with decorators instead,
which this does now (while reverting 869eed9).

Author: blueyed

changelog/2548.bugfix.rst

@@ -0,0 +1 @@
+Fix line offset mismatch with skipped tests in terminal summary.

src/_pytest/skipping.py

@@ -161,9 +161,9 @@ def pytest_runtest_makereport(item, call):
         # skipped by mark.skipif; change the location of the failure
         # to point to the item definition, otherwise it will display
         # the location of where the skip exception was raised within pytest
-        filename, line, reason = rep.longrepr
+        _, _, reason = rep.longrepr
         filename, line = item.location[:2]
-        rep.longrepr = filename, line, reason
+        rep.longrepr = filename, line + 1, reason
 
 
 # called by terminalreporter progress reporting

src/_pytest/terminal.py

@@ -954,7 +954,7 @@ def show_skipped(lines: List[str]) -> None:
                 if lineno is not None:
                     lines.append(
                         "%s [%d] %s:%d: %s"
-                        % (verbose_word, num, fspath, lineno + 1, reason)
+                        % (verbose_word, num, fspath, lineno, reason)
                     )
                 else:
                     lines.append("%s [%d] %s: %s" % (verbose_word, num, fspath, reason))

testing/test_skipping.py

@@ -731,23 +731,37 @@ def test_though(self):
 def test_skipped_reasons_functional(testdir):
     testdir.makepyfile(
         test_one="""
+            import pytest
             from conftest import doskip
+
             def setup_function(func):
                 doskip()
+
             def test_func():
                 pass
+
             class TestClass(object):
                 def test_method(self):
                     doskip()
-       """,
+
+                @pytest.mark.skip("via_decorator")
+                def test_deco(self):
+                    assert 0
+        """,
         conftest="""
-            import pytest
+            import pytest, sys
             def doskip():
+                assert sys._getframe().f_lineno == 3
                 pytest.skip('test')
         """,
     )
     result = testdir.runpytest("-rs")
-    result.stdout.fnmatch_lines(["*SKIP*2*conftest.py:4: test"])
+    result.stdout.fnmatch_lines(
+        [
+            "SKIPPED [[]2[]] */conftest.py:4: test",
+            "SKIPPED [[]1[]] test_one.py:14: via_decorator",
+        ]
+    )
     assert result.ret == 0