INNER CODE UNIT · Go

TestLRUCacheDeleteLen

duke-git/lancet · algorithm/lrucache_test.go:36

func TestLRUCacheDeleteLen(t *testing.T) {
	t.Parallel()
	cache := NewLRUCache[int, int](3)
	for key := 1; key <= 3; key++ {
		cache.Put(key, key)
	}

	for _, key := range []int{2, 1, 3} {
		before := cache.Len()
		if !cache.Delete(key) {
			t.Fatalf("Delete(%d) = false, want true", key)
		}
		if got := cache.Len(); got != before-1 {
			t.Fatalf("Len() after Delete(%d) = %d, want %d", key, got, before-1)
		}
		if cache.Delete(key) {
			t.Fatalf("Delete(%d) = true for a missing key", key)
		}

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