Dart: analysis_options `include:` in list form or an explicit rule list is "no lint set"; Flutter integration tests under example/integration_test are not tests

The three false negatives all come from checks in project_validator/ecosystems/dart.py: the LINT_SET regex near lines 149-150 (which does not recognise the dart-lang team lint set or the list form of include:), and the test-path regex at line 73 (which does not match integration_test/). Start by reproducing each case with a small analysis_options.yaml or example/integration_test/ fixture and the existing Dart tests. Done means the three repositories cited in the issue pass those checks without loosening the existing negative cases.

dart-lang/http's root options include the dart-lang team lint set (which includes lints/recommended) and enable the strict modes, yet compiler-warnings FAILs "missing a lint set in analysis_options.yaml"; bloc's root file spells out ~200 rules with no include:, and its package files use the Dart 3 list form of include:, which the single-line regex ^include:\s*package: misses. http's Flutter plugins (cronet_http, ok_http) keep their tests in example/integration_test/*_test.dart and CI runs them on an emulator → "no tests found".

Evidence from the corpus audit

dart-lang/http / compiler-warnings

• kind: FALSE_NEGATIVE
• actual: FAIL: Dart: missing Dart analyzer settings: a lint set in analysis_options.yaml
• expected: PASS: the root analysis_options.yaml includes the dart-lang team lint set (which itself includes
  lints/recommended) and enables the three strict modes, and every workflow runs dart analyze.
• evidence: analysis_options.yaml:1: include: package:dart_flutter_team_lints/analysis_options.yaml;
  analysis_options.yaml:5-7: strict-casts: true / strict-raw-types: true / strict-inference: true;
  validator project_validator/ecosystems/dart.py:149-150: the LINT_SET regex only knows
  lints/recommended|flutter_lints/flutter|very_good_analysis/analysis_options|lint/...|pedantic/analysis_options.
• repro: analysis_options.yaml with include: package:dart_flutter_team_lints/analysis_options.yaml + a workflow
  step run: dart analyze --fatal-infos.
• confidence: high

felangel/bloc / compiler-warnings

• kind: FALSE_NEGATIVE
• actual: FAIL: Dart: missing Dart analyzer settings: a lint set in analysis_options.yaml
• expected: PASS (or at least not "missing"): the root options file has no include: but spells out ~200 lint rules
  plus the strict modes; the package files include a lint set with the list form of include: (Dart 3.x), which the
  single-line regex ^include:\s*package: does not match.
• evidence: analysis_options.yaml:8-10: strict-casts: true / strict-inference: true / strict-raw-types: true;
  analysis_options.yaml:22-24: linter: / rules: / - always_declare_return_types (and ~200 more);
  packages/bloc/analysis_options.yaml:1-3: include: / - package:bloc_lint/recommended.yaml /
  - ../../analysis_options.yaml.
• repro: analysis_options.yaml containing include:\n - package:lints/recommended.yaml (list form).
• confidence: medium

dart-lang/http / tests-run

• kind: FALSE_NEGATIVE
• actual: FAIL: Dart: pkgs/cronet_http: no tests found (test(), testWidgets() or group() calls in test/**/*_test.dart);
  pkgs/ok_http: no tests found (...)
• expected: PASS for both: the Flutter plugins' tests are integration tests in example/integration_test/*_test.dart
  and CI runs them on an emulator.
• evidence: pkgs/cronet_http/example/integration_test/client_test.dart, pkgs/ok_http/example/integration_test/client_test.dart
  (5 files) exist; .github/workflows/cronet.yml:119: script: cd pkgs/cronet_http/example && flutter test --dart-define=cronetHttpNoPlay=${{ matrix.cronetHttpNoPlay }} --timeout=1200s integration_test/;
  .github/workflows/okhttp.yaml:68: script: cd pkgs/ok_http/example && flutter test --timeout=1200s integration_test/;
  validator project_validator/ecosystems/dart.py:73: path=re.compile(r"(?:^|/)test/.+_test\.dart$") (does not
  match integration_test/). The script: input of reactivecircus/android-emulator-runner is neither read nor
  reported as unread (strict run lists only the dart-lang/ecosystem reusable workflows).
• repro: example/integration_test/a_test.dart with testWidgets(, and a step
  uses: reactivecircus/android-emulator-runner@<sha> with script: cd example && flutter test integration_test/.
• confidence: high

Found by the regression-corpus audit (235 real repositories, one or more per ecosystem profile; corpus and expected results in corpus/). Evidence is quoted from the audited checkouts at the commits pinned in corpus/projects.toml; <checkouts>/<owner>__<repo> is such a checkout.

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