Fix some check_untyped_defs mypy errors in terminal

src/_pytest/terminal.py

@@ -9,6 +9,12 @@ import platform
 import sys
 import time
 from functools import partial
+from typing import Callable
+from typing import Dict
+from typing import List
+from typing import Mapping
+from typing import Optional
+from typing import Set
 
 import attr
 import pluggy
@@ -195,8 +201,8 @@ class WarningReport:
         file system location of the source of the warning (see ``get_location``).
     """
 
-    message = attr.ib()
+    message = attr.ib(type=str)
-    nodeid = attr.ib(default=None)
+    nodeid = attr.ib(type=Optional[str], default=None)
     fslocation = attr.ib(default=None)
     count_towards_summary = True
 
@@ -240,7 +246,7 @@ class TerminalReporter:
         self.reportchars = getreportopt(config)
         self.hasmarkup = self._tw.hasmarkup
         self.isatty = file.isatty()
-        self._progress_nodeids_reported = set()
+        self._progress_nodeids_reported = set()  # type: Set[str]
         self._show_progress_info = self._determine_show_progress_info()
         self._collect_report_last_write = None
 
@@ -619,7 +625,7 @@ class TerminalReporter:
         # because later versions are going to get rid of them anyway
         if self.config.option.verbose < 0:
             if self.config.option.verbose < -1:
-                counts = {}
+                counts = {}  # type: Dict[str, int]
                 for item in items:
                     name = item.nodeid.split("::", 1)[0]
                     counts[name] = counts.get(name, 0) + 1
@@ -750,7 +756,9 @@ class TerminalReporter:
 
     def summary_warnings(self):
         if self.hasopt("w"):
-            all_warnings = self.stats.get("warnings")
+            all_warnings = self.stats.get(
+                "warnings"
+            )  # type: Optional[List[WarningReport]]
             if not all_warnings:
                 return
 
@@ -763,7 +771,9 @@ class TerminalReporter:
             if not warning_reports:
                 return
 
-            reports_grouped_by_message = collections.OrderedDict()
+            reports_grouped_by_message = (
+                collections.OrderedDict()
+            )  # type: collections.OrderedDict[str, List[WarningReport]]
             for wr in warning_reports:
                 reports_grouped_by_message.setdefault(wr.message, []).append(wr)
 
@@ -900,11 +910,11 @@ class TerminalReporter:
         else:
             self.write_line(msg, **main_markup)
 
-    def short_test_summary(self):
+    def short_test_summary(self) -> None:
         if not self.reportchars:
             return
 
-        def show_simple(stat, lines):
+        def show_simple(stat, lines: List[str]) -> None:
             failed = self.stats.get(stat, [])
             if not failed:
                 return
@@ -914,7 +924,7 @@ class TerminalReporter:
                 line = _get_line_with_reprcrash_message(config, rep, termwidth)
                 lines.append(line)
 
-        def show_xfailed(lines):
+        def show_xfailed(lines: List[str]) -> None:
             xfailed = self.stats.get("xfailed", [])
             for rep in xfailed:
                 verbose_word = rep._get_verbose_word(self.config)
@@ -924,7 +934,7 @@ class TerminalReporter:
                 if reason:
                     lines.append("  " + str(reason))
 
-        def show_xpassed(lines):
+        def show_xpassed(lines: List[str]) -> None:
             xpassed = self.stats.get("xpassed", [])
             for rep in xpassed:
                 verbose_word = rep._get_verbose_word(self.config)
@@ -932,7 +942,7 @@ class TerminalReporter:
                 reason = rep.wasxfail
                 lines.append("{} {} {}".format(verbose_word, pos, reason))
 
-        def show_skipped(lines):
+        def show_skipped(lines: List[str]) -> None:
             skipped = self.stats.get("skipped", [])
             fskips = _folded_skips(skipped) if skipped else []
             if not fskips:
@@ -958,9 +968,9 @@ class TerminalReporter:
             "S": show_skipped,
             "p": partial(show_simple, "passed"),
             "E": partial(show_simple, "error"),
-        }
+        }  # type: Mapping[str, Callable[[List[str]], None]]
 
-        lines = []
+        lines = []  # type: List[str]
         for char in self.reportchars:
             action = REPORTCHAR_ACTIONS.get(char)
             if action:  # skipping e.g. "P" (passed with output) here.
@@ -1084,8 +1094,8 @@ def build_summary_stats_line(stats):
     return parts, main_color
 
 
-def _plugin_nameversions(plugininfo):
+def _plugin_nameversions(plugininfo) -> List[str]:
-    values = []
+    values = []  # type: List[str]
     for plugin, dist in plugininfo:
         # gets us name and version!
         name = "{dist.project_name}-{dist.version}".format(dist=dist)
@@ -1099,7 +1109,7 @@ def _plugin_nameversions(plugininfo):
     return values
 
 
-def format_session_duration(seconds):
+def format_session_duration(seconds: float) -> str:
     """Format the given seconds in a human readable manner to show in the final summary"""
     if seconds < 60:
         return "{:.2f}s".format(seconds)