test: Further improve test coverage (#2422)

tests/cache/base.test.ts

@@ -0,0 +1,78 @@
+import { describe, expect, it } from 'vitest';
+import { CacheBase } from '../../src/cache/base';
+
+describe('CacheBase', () => {
+  describe('has', () => {
+    it('should return true when key exists', () => {
+      const cache = new CacheBase(new Map([['a', 1]]));
+      expect(cache.has('a')).toBeTruthy();
+    });
+
+    it('should return false when key is absent', () => {
+      const cache = new CacheBase<string, number>(new Map());
+      expect(cache.has('a')).toBeFalsy();
+    });
+  });
+
+  describe('get', () => {
+    it('should return value when key exists', () => {
+      const cache = new CacheBase(new Map([['a', 1]]));
+      expect(cache.get('a')).toBe(1);
+    });
+
+    it('should return null when key is absent', () => {
+      const cache = new CacheBase<string, number>(new Map());
+      expect(cache.get('a')).toBeNull();
+    });
+  });
+
+  it('should set a value', () => {
+    const cache = new CacheBase<string, number>(new Map());
+    cache.set('a', 1);
+    expect(cache.get('a')).toBe(1);
+  });
+
+  it('should delete a key', () => {
+    const cache = new CacheBase(new Map([['a', 1]]));
+    expect(cache.delete('a')).toBeTruthy();
+    expect(cache.has('a')).toBeFalsy();
+  });
+
+  it('should clear all entries', () => {
+    const cache = new CacheBase(
+      new Map([
+        ['a', 1],
+        ['b', 2],
+      ]),
+    );
+
+    cache.clear();
+
+    expect(cache.has('a')).toBeFalsy();
+    expect(cache.has('b')).toBeFalsy();
+  });
+
+  it('should return matching entries', () => {
+    const cache = new CacheBase(
+      new Map([
+        ['a', 1],
+        ['b', 2],
+        ['c', 3],
+      ]),
+    );
+    expect(cache.getMatches((v) => v >= 2)).toEqual([2, 3]);
+  });
+
+  it('should iterate entries', () => {
+    const cache = new CacheBase(
+      new Map([
+        ['a', 1],
+        ['b', 2],
+      ]),
+    );
+    expect([...cache.entries()]).toEqual([
+      ['a', 1],
+      ['b', 2],
+    ]);
+  });
+});