diff --git a/harness/features.yml b/harness/features.yml
new file mode 100644
index 0000000000000000000000000000000000000000..34a3a0bfa9edb58c3dac7416c124dd7d6b511558
--- /dev/null
+++ b/harness/features.yml
@@ -0,0 +1,3 @@
+propertyHelper.js: [template]
+typeCoercion.js: [Symbol.toPrimitive,BigInt]
+testTypedArray.js: [TypedArray]
diff --git a/tools/lint/lib/check.py b/tools/lint/lib/check.py
index 31307282242d182e3d00869c16a2436fb3e033b7..45bbaa3140234314ce34b4082b0544d333781daf 100644
--- a/tools/lint/lib/check.py
+++ b/tools/lint/lib/check.py
@@ -1,5 +1,5 @@
class Check(object):
- '''Base class for defining linting checks.'''
+ '''Base class for defining linting checks.'''
ID = None
def run(self, name, meta, source):
diff --git a/tools/lint/lib/checks/harnessfeatures.py b/tools/lint/lib/checks/harnessfeatures.py
new file mode 100644
index 0000000000000000000000000000000000000000..8115b51cd5dfd51ba0ce3f1f2e867f2c41d24ddd
--- /dev/null
+++ b/tools/lint/lib/checks/harnessfeatures.py
@@ -0,0 +1,59 @@
+import yaml
+
+from ..check import Check
+
+class CheckHarnessFeatures(Check):
+ '''Ensure tests that use harnesses with explicit features flag requirements
+ specify only `features` from a list of valid values.'''
+ ID = 'HARNESS_FEATURES'
+
+ def __init__(self):
+ with open('./harness/features.yml', 'r') as f:
+ self.include_has_features = yaml.load(f.read())
+
+ def comparison_result_lists(self, meta):
+
+ result = {'features': set(), 'missing': set()}
+ meta_features = meta['features'] if 'features' in meta else []
+ meta_includes = meta['includes']
+ features = []
+
+ if not meta or 'includes' not in meta:
+ return result
+
+ if len(meta_includes) == 0:
+ return result
+
+ for meta_include in meta_includes:
+ if meta_include in self.include_has_features:
+ features = self.include_has_features[meta_include]
+
+ if len(features) == 0:
+ return result
+
+ if 'features' not in meta or len(meta['features']) == 0:
+ result['missing'].update(features)
+ else:
+ meta_features = meta['features']
+
+ for feature in features:
+ if feature not in meta_features:
+ result['missing'].add(feature)
+
+ result['features'].update(meta_features);
+
+ return result
+
+
+ def run(self, name, meta, source):
+
+ result = self.comparison_result_lists(meta)
+
+ if len(result['features']) == 0 and len(result['missing']) == 0:
+ return
+
+ if len(result['missing']) > 0:
+ if len(result['features']) == 0:
+ return 'Missing: `features: [%s]`' % ', '.join(list(result['missing']))
+ else:
+ return 'Missing from `features`: %s' % ', '.join(list(result['missing']))
diff --git a/tools/lint/lint.py b/tools/lint/lint.py
index 09e22507a07ea68efb5fa6dd22120e8c55301852..9c446b5bb9f95b2f7b3af464e5a59c0ce8480dcf 100755
--- a/tools/lint/lint.py
+++ b/tools/lint/lint.py
@@ -7,6 +7,7 @@ import sys
from lib.collect_files import collect_files
from lib.checks.features import CheckFeatures
+from lib.checks.harnessfeatures import CheckHarnessFeatures
from lib.checks.frontmatter import CheckFrontmatter
from lib.checks.license import CheckLicense
from lib.checks.negative import CheckNegative
@@ -23,7 +24,10 @@ parser.add_argument('path',
help='file name or directory of files to lint')
checks = [
- CheckFrontmatter(), CheckFeatures('features.txt'), CheckLicense(),
+ CheckFrontmatter(),
+ CheckFeatures('features.txt'),
+ CheckHarnessFeatures(),
+ CheckLicense(),
CheckNegative()
]
diff --git a/tools/lint/test/fixtures/harness_features_empty.js b/tools/lint/test/fixtures/harness_features_empty.js
new file mode 100644
index 0000000000000000000000000000000000000000..2fc5bae129e7d7e4185e57a124b3ae8091e2079c
--- /dev/null
+++ b/tools/lint/test/fixtures/harness_features_empty.js
@@ -0,0 +1,12 @@
+HARNESS_FEATURES - Missing Frontmatter: `features: [TypedArray]`
+^ expected errors | v input
+// Copyright (C) 2017 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-assignment-operators-static-semantics-early-errors
+description: Minimal test
+features: []
+includes: [testTypedArray.js]
+---*/
+
+// empty
diff --git a/tools/lint/test/fixtures/harness_features_multiple_includes.js b/tools/lint/test/fixtures/harness_features_multiple_includes.js
new file mode 100644
index 0000000000000000000000000000000000000000..c9cabb8d711aaa98e91b1b6e8c3b8ccebd8ec3a6
--- /dev/null
+++ b/tools/lint/test/fixtures/harness_features_multiple_includes.js
@@ -0,0 +1,11 @@
+HARNESS_FEATURES - Missing Frontmatter: `features: [TypedArray, template]
+^ expected errors | v input
+// Copyright (C) 2017 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-assignment-operators-static-semantics-early-errors
+description: Minimal test
+includes: [testTypedArray.js, compareArray.js]
+---*/
+
+// empty
diff --git a/tools/lint/test/fixtures/harness_features_partial.js b/tools/lint/test/fixtures/harness_features_partial.js
new file mode 100644
index 0000000000000000000000000000000000000000..4d6a15c5515af573598cb3ec0eb705bf957de3da
--- /dev/null
+++ b/tools/lint/test/fixtures/harness_features_partial.js
@@ -0,0 +1,12 @@
+HARNESS_FEATURES - Missing from `features`: Symbol.toPrimitive
+^ expected errors | v input
+// Copyright (C) 2017 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-assignment-operators-static-semantics-early-errors
+description: Minimal test
+features: [BigInt]
+includes: [typeCoercion.js]
+---*/
+
+// empty
diff --git a/tools/lint/test/fixtures/harness_features_valid.js b/tools/lint/test/fixtures/harness_features_valid.js
new file mode 100644
index 0000000000000000000000000000000000000000..4f92cf54eb57ddf0c030acae4d333c44f2f7f8b4
--- /dev/null
+++ b/tools/lint/test/fixtures/harness_features_valid.js
@@ -0,0 +1,11 @@
+^ expected errors | v input
+// Copyright (C) 2017 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-assignment-operators-static-semantics-early-errors
+description: Minimal test
+features: [TypedArray]
+includes: [testTypedArray.js]
+---*/
+
+// empty