build: pragma tweaks

Some of these were really partial branches, not missed lines.

Author: nedbat

metacov.ini

@@ -54,16 +54,13 @@ exclude_lines =
     pragma: not testing
 
     # Lines that we can't run during metacov.
-    pragma: no metacov
     pytest.mark.skipif\(env.METACOV
-    if not env.METACOV:
 
     # These lines only happen if tests fail.
     raise AssertionError
     pragma: only failure
 
     # Not-real code for type checking
-    if TYPE_CHECKING:
     class .*\(Protocol\):
     @overload
 
@@ -85,7 +82,10 @@ partial_branches =
     # If we're asserting that any() is true, it didn't finish.
     assert any\(
     if env.TESTING:
+    pragma: partial metacov
     if env.METACOV:
+    if not env.METACOV:
+    if TYPE_CHECKING:
 
 precision = 3
 

tests/test_oddball.py

@@ -145,15 +145,15 @@ def recur(n):
         assert cov._collector is not None
         pytrace = (cov._collector.tracer_name() == "PyTracer")  # fmt: skip
         expected_missing = [4]
-        if pytrace:  # pragma: no metacov
+        if pytrace:  # pragma: partial metacov
             expected_missing += [10, 11, 12]
 
         _, statements, missing, _ = cov.analysis("recur.py")
         assert statements == [1, 2, 3, 4, 6, 8, 9, 10, 11, 12]
         assert expected_missing == missing
 
         # Get a warning about the stackoverflow effect on the tracing function.
-        if pytrace and not env.METACOV:  # pragma: no metacov
+        if pytrace and not env.METACOV:  # pragma: partial metacov
             assert len(cov._warnings) == 1
             assert re.fullmatch(
                 r"Trace function changed, data is likely wrong: None != "