Correctly assert in test

Author: uranusjr

tests/functional/test_freeze.py

@@ -135,7 +135,7 @@ def fake_install(pkgname, dest):
     # Check all valid names are in the output.
     output_lines = {line.strip() for line in result.stdout.splitlines()}
     for name in valid_pkgnames:
-        f"{canonicalize_name(name)}==1.0" in output_lines
+        assert f"{canonicalize_name(name)}==1.0" in output_lines
 
     # Check all invalid names are excluded from the output.
     canonical_invalid_names = {canonicalize_name(n) for n in invalid_pkgnames}