copied set implementations from MultiFlag JS

2026-02-09 22:11:23 +01:00
parent 80c17ac3ac
commit 140896bd7c
56 changed files with 8055 additions and 24 deletions
--- a/node/tests/flagsets/collection.test.ts
+++ b/node/tests/flagsets/collection.test.ts
@@ -0,0 +1,73 @@
+import { CollectionFlagSet } from '~'
+
+function set<T>(...values: T[]): Set<T> {
+    return new Set<T>(values)
+}
+
+describe(CollectionFlagSet, () => {
+    test('none', () => {
+        const flags = new CollectionFlagSet<string>()
+
+        expect(flags.none()).toEqual(set())
+    })
+
+    test('union', () => {
+        const flags = new CollectionFlagSet<string>()
+
+        expect(flags.union(set(), set())).toEqual(set())
+        expect(flags.union(set('A'), set())).toEqual(set('A'))
+        expect(flags.union(set(), set('B'))).toEqual(set('B'))
+        expect(flags.union(set('A'), set('B'))).toEqual(set('A', 'B'))
+        expect(flags.union(set('A', 'B'), set('B', 'C'))).toEqual(
+            set('A', 'B', 'C')
+        )
+    })
+
+    test('difference', () => {
+        const flags = new CollectionFlagSet<string>()
+
+        expect(flags.difference(set(), set())).toEqual(set())
+        expect(flags.difference(set('A'), set())).toEqual(set('A'))
+        expect(flags.difference(set('A', 'B'), set('B', 'C'))).toEqual(set('A'))
+        expect(flags.difference(set('B', 'C'), set('A', 'B'))).toEqual(set('C'))
+        expect(flags.difference(set('D'), set('A', 'E'))).toEqual(set('D'))
+    })
+
+    test('intersection', () => {
+        const flags = new CollectionFlagSet<string>()
+
+        expect(flags.intersection(set(), set())).toEqual(set())
+        expect(flags.intersection(set('A'), set())).toEqual(set())
+        expect(flags.intersection(set('A'), set('B'))).toEqual(set())
+        expect(flags.intersection(set('A'), set('A', 'B'))).toEqual(set('A'))
+        expect(flags.intersection(set('A', 'B', 'D'), set('A', 'C'))).toEqual(
+            set('A')
+        )
+        expect(
+            flags.intersection(set('A', 'B', 'D'), set('A', 'B', 'C'))
+        ).toEqual(set('A', 'B'))
+    })
+
+    test('isSuperset', () => {
+        const flags = new CollectionFlagSet<string>()
+
+        expect(flags.isSuperset(set(), set())).toBe(true)
+        expect(flags.isSuperset(set('A', 'B'), set())).toBe(true)
+        expect(flags.isSuperset(set('A', 'B'), set('A'))).toBe(true)
+        expect(flags.isSuperset(set('A', 'B'), set('A', 'B'))).toBe(true)
+        expect(flags.isSuperset(set(), set('A', 'B'))).toBe(false)
+        expect(flags.isSuperset(set('C', 'D'), set('B'))).toBe(false)
+    })
+
+    test('enumerate', () => {
+        const flags = new CollectionFlagSet<string>()
+
+        expect([...flags.enumerate(set())]).toEqual([])
+        expect([...flags.enumerate(set('A'))]).toEqual(['A'])
+        expect([...flags.enumerate(set('A', 'B', 'C'))]).toEqual([
+            'A',
+            'B',
+            'C',
+        ])
+    })
+})