Function TestFreelist_E2E_Reload

internal/freelist/freelist_test.go:451–484

tests the reloading from another physical page

(t *testing.T)

// tests the reloading from another physical page
func TestFreelist_E2E_Reload(t *testing.T) {
	freelist := newTestFreelist()
	freelist.Init([]common.Pgid{})
	freelist.Free(common.Txid(2), common.NewPage(5, common.LeafPageFlag, 0, 1))
	freelist.Free(common.Txid(2), common.NewPage(8, common.LeafPageFlag, 0, 0))
	freelist.ReleasePendingPages()
	requirePages(t, freelist, common.Pgids{5, 6, 8}, common.Pgids{})
	buf := make([]byte, 4096)
	p := common.LoadPage(buf)
	freelist.Write(p)

	freelist.Free(common.Txid(3), common.NewPage(3, common.LeafPageFlag, 0, 1))
	freelist.Free(common.Txid(3), common.NewPage(10, common.LeafPageFlag, 0, 2))
	requirePages(t, freelist, common.Pgids{5, 6, 8}, common.Pgids{3, 4, 10, 11, 12})

	otherBuf := make([]byte, 4096)
	px := common.LoadPage(otherBuf)
	freelist.Write(px)

	loadFreeList := newTestFreelist()
	loadFreeList.Init([]common.Pgid{})
	loadFreeList.Read(px)
	requirePages(t, loadFreeList, common.Pgids{3, 4, 5, 6, 8, 10, 11, 12}, common.Pgids{})
	// restore the original freelist again
	loadFreeList.Reload(p)
	requirePages(t, loadFreeList, common.Pgids{5, 6, 8}, common.Pgids{})

	// reload another page with different free pages to test we are deduplicating the free pages with the pending ones correctly
	freelist = newTestFreelist()
	freelist.Init([]common.Pgid{})
	freelist.Free(common.Txid(5), common.NewPage(5, common.LeafPageFlag, 0, 4))
	freelist.Reload(p)
	requirePages(t, freelist, common.Pgids{}, common.Pgids{5, 6, 7, 8, 9})
}

// tests the loading and reloading from physical pages
func TestFreelist_E2E_SerDe_HappyPath(t *testing.T) {