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# Copyright 2023 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from mojom_parser_test_case import MojomParserTestCase
class FeatureTest(MojomParserTestCase):
"""Tests feature parsing behavior."""
def testFeatureOff(self):
"""Verifies basic parsing of feature types."""
types = self.ExtractTypes("""
// e.g. BASE_DECLARE_FEATURE(kFeature);
[AttributeOne=ValueOne]
feature kFeature {
// BASE_FEATURE(kFeature,"MyFeature",
// base::FEATURE_DISABLED_BY_DEFAULT);
const string name = "MyFeature";
const bool default_state = false;
};
""")
self.assertEqual('name', types['kFeature'].constants[0].mojom_name)
self.assertEqual('"MyFeature"', types['kFeature'].constants[0].value)
self.assertEqual('default_state', types['kFeature'].constants[1].mojom_name)
self.assertEqual('false', types['kFeature'].constants[1].value)
def testFeatureOn(self):
"""Verifies basic parsing of feature types."""
types = self.ExtractTypes("""
// e.g. BASE_DECLARE_FEATURE(kFeature);
feature kFeature {
// BASE_FEATURE(kFeature,"MyFeature",
// base::FEATURE_ENABLED_BY_DEFAULT);
const string name = "MyFeature";
const bool default_state = true;
};
""")
self.assertEqual('name', types['kFeature'].constants[0].mojom_name)
self.assertEqual('"MyFeature"', types['kFeature'].constants[0].value)
self.assertEqual('default_state', types['kFeature'].constants[1].mojom_name)
self.assertEqual('true', types['kFeature'].constants[1].value)
def testFeatureWeakKeyword(self):
"""Verifies that `feature` is a weak keyword."""
types = self.ExtractTypes("""
// e.g. BASE_DECLARE_FEATURE(kFeature);
[AttributeOne=ValueOne]
feature kFeature {
// BASE_FEATURE(kFeature,"MyFeature",
// base::FEATURE_DISABLED_BY_DEFAULT);
const string name = "MyFeature";
const bool default_state = false;
};
struct MyStruct {
bool feature = true;
};
interface InterfaceName {
Method(string feature) => (int32 feature);
};
""")
self.assertEqual('name', types['kFeature'].constants[0].mojom_name)
self.assertEqual('"MyFeature"', types['kFeature'].constants[0].value)
self.assertEqual('default_state', types['kFeature'].constants[1].mojom_name)
self.assertEqual('false', types['kFeature'].constants[1].value)
def testFeatureAttributesAreFeatures(self):
"""Verifies that feature values in attributes are really feature types."""
a_mojom = 'a.mojom'
self.WriteFile(
a_mojom, 'module a;'
'feature F { const string name = "f";'
'const bool default_state = false; };')
b_mojom = 'b.mojom'
self.WriteFile(
b_mojom, 'module b;'
'import "a.mojom";'
'feature G'
'{const string name = "g"; const bool default_state = false;};'
'[Attri=a.F] interface Foo { Foo(); };'
'[Boink=G] interface Bar {};')
self.ParseMojoms([a_mojom, b_mojom])
b = self.LoadModule(b_mojom)
self.assertEqual(b.interfaces[0].attributes['Attri'].mojom_name, 'F')
self.assertEqual(b.interfaces[1].attributes['Boink'].mojom_name, 'G')
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