package fzf import ( "fmt" "math/rand" "sort" "testing" "github.com/junegunn/fzf/src/util" ) func assert(t *testing.T, cond bool, msg ...string) { if !cond { t.Error(msg) } } func randResult() Result { str := fmt.Sprintf("%d", rand.Uint32()) chars := util.ToChars([]byte(str)) chars.Index = rand.Int31() return Result{item: &Item{text: chars}} } func TestEmptyMerger(t *testing.T) { assert(t, EmptyMerger.Length() == 0, "Not empty") assert(t, EmptyMerger.count == 0, "Invalid count") assert(t, len(EmptyMerger.lists) == 0, "Invalid lists") assert(t, len(EmptyMerger.merged) == 0, "Invalid merged list") } func buildLists(partiallySorted bool) ([][]Result, []Result) { numLists := 4 lists := make([][]Result, numLists) cnt := 0 for i := 0; i < numLists; i++ { numResults := rand.Int() % 20 cnt += numResults lists[i] = make([]Result, numResults) for j := 0; j < numResults; j++ { item := randResult() lists[i][j] = item } if partiallySorted { sort.Sort(ByRelevance(lists[i])) } } items := []Result{} for _, list := range lists { items = append(items, list...) } return lists, items } func TestMergerUnsorted(t *testing.T) { lists, items := buildLists(false) cnt := len(items) // Not sorted: same order mg := NewMerger(nil, lists, false, false) assert(t, cnt == mg.Length(), "Invalid Length") for i := 0; i < cnt; i++ { assert(t, items[i] == mg.Get(i), "Invalid Get") } } func TestMergerSorted(t *testing.T) { lists, items := buildLists(true) cnt := len(items) // Sorted sorted order mg := NewMerger(nil, lists, true, false) assert(t, cnt == mg.Length(), "Invalid Length") sort.Sort(ByRelevance(items)) for i := 0; i < cnt; i++ { if items[i] != mg.Get(i) { t.Error("Not sorted", items[i], mg.Get(i)) } } // Inverse order mg2 := NewMerger(nil, lists, true, false) for i := cnt - 1; i >= 0; i-- { if items[i] != mg2.Get(i) { t.Error("Not sorted", items[i], mg2.Get(i)) } } }