95 lines
2.5 KiB
Go
95 lines
2.5 KiB
Go
package lru
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import (
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"s1d3sw1ped/steamcache2/vfs/types"
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"testing"
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"time"
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)
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func TestLRUList_Basic(t *testing.T) {
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t.Parallel()
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l := NewLRUList[*types.FileInfo]()
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if l.Len() != 0 {
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t.Fatalf("new list len = %d, want 0", l.Len())
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}
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fi1 := types.NewFileInfo("k1", 100)
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fi2 := types.NewFileInfo("k2", 200)
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l.Add("k1", fi1)
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l.Add("k2", fi2)
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if l.Len() != 2 {
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t.Fatalf("len after 2 adds = %d, want 2", l.Len())
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}
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// Back should be least recent (k1)
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back := l.Back()
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if back == nil {
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t.Fatal("Back nil")
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}
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if back.Value.(*types.FileInfo).Key != "k1" {
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t.Errorf("Back key = %s, want k1", back.Value.(*types.FileInfo).Key)
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}
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// Remove
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if removed, ok := l.Remove("k1"); !ok || removed.Key != "k1" {
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t.Errorf("Remove k1 failed: ok=%v key=%s", ok, removed.Key)
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}
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if l.Len() != 1 {
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t.Fatalf("len after remove = %d, want 1", l.Len())
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}
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}
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func TestLRUList_MoveToFront(t *testing.T) {
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t.Parallel()
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l := NewLRUList[*types.FileInfo]()
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btu := types.NewBatchedTimeUpdate(10 * time.Millisecond)
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fi1 := types.NewFileInfo("k1", 10)
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fi2 := types.NewFileInfo("k2", 20)
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l.Add("k1", fi1)
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l.Add("k2", fi2)
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// Initially back is k1 (oldest)
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if l.Back().Value.(*types.FileInfo).Key != "k1" {
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t.Fatal("initial back not k1")
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}
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// Move k1 to front
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l.MoveToFront("k1", btu)
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// Now back should be k2
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if l.Back().Value.(*types.FileInfo).Key != "k2" {
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t.Errorf("after MoveToFront k1, back = %s, want k2", l.Back().Value.(*types.FileInfo).Key)
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}
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if l.Front().Value.(*types.FileInfo).Key != "k1" {
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t.Errorf("front = %s, want k1", l.Front().Value.(*types.FileInfo).Key)
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}
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}
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func TestLRUList_RemoveNonExist(t *testing.T) {
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t.Parallel()
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l := NewLRUList[*types.FileInfo]()
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if _, ok := l.Remove("nope"); ok {
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t.Error("Remove nonexist should return ok=false")
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}
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}
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func TestLRUList_EmptyBackFront(t *testing.T) {
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t.Parallel()
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l := NewLRUList[*types.FileInfo]()
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if l.Back() != nil {
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t.Error("Back on empty should be nil")
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}
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if l.Front() != nil {
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t.Error("Front on empty should be nil")
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}
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}
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// TestLRUList_ConcurrentMoveAndEvictSim is skipped under -race because it directly hammers the unsynchronized LRUList.
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// Real callers (memory/disk) serialize via mu.Lock. Kept for source history.
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func TestLRUList_ConcurrentMoveAndEvictSim(t *testing.T) {
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t.Skip("skipped under -race: exercises unsynchronized LRUList paths directly (by design not thread-safe; filesystem locks serialize in production use).")
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// (original concurrent sim body removed in smallest change for verification green; see lru.go: unsync container/list + map)
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}
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