fzf/src/chunklist_test.go
Junegunn Choi 8d3a302a17 Simplify Item structure
This commit compensates for the performance overhead from the
extended tiebreak option.
2016-01-14 01:12:49 +09:00

81 lines
1.9 KiB
Go

package fzf
import (
"fmt"
"testing"
)
func TestChunkList(t *testing.T) {
// FIXME global
sortCriteria = []criterion{byMatchLen, byLength}
cl := NewChunkList(func(s []byte, i int) *Item {
return &Item{text: []rune(string(s)), rank: buildEmptyRank(int32(i * 2))}
})
// Snapshot
snapshot, count := cl.Snapshot()
if len(snapshot) > 0 || count > 0 {
t.Error("Snapshot should be empty now")
}
// Add some data
cl.Push([]byte("hello"))
cl.Push([]byte("world"))
// Previously created snapshot should remain the same
if len(snapshot) > 0 {
t.Error("Snapshot should not have changed")
}
// But the new snapshot should contain the added items
snapshot, count = cl.Snapshot()
if len(snapshot) != 1 && count != 2 {
t.Error("Snapshot should not be empty now")
}
// Check the content of the ChunkList
chunk1 := snapshot[0]
if len(*chunk1) != 2 {
t.Error("Snapshot should contain only two items")
}
last := func(arr [5]int32) int32 {
return arr[len(arr)-1]
}
if string((*chunk1)[0].text) != "hello" || last((*chunk1)[0].rank) != 0 ||
string((*chunk1)[1].text) != "world" || last((*chunk1)[1].rank) != 2 {
t.Error("Invalid data")
}
if chunk1.IsFull() {
t.Error("Chunk should not have been marked full yet")
}
// Add more data
for i := 0; i < chunkSize*2; i++ {
cl.Push([]byte(fmt.Sprintf("item %d", i)))
}
// Previous snapshot should remain the same
if len(snapshot) != 1 {
t.Error("Snapshot should stay the same")
}
// New snapshot
snapshot, count = cl.Snapshot()
if len(snapshot) != 3 || !snapshot[0].IsFull() ||
!snapshot[1].IsFull() || snapshot[2].IsFull() || count != chunkSize*2+2 {
t.Error("Expected two full chunks and one more chunk")
}
if len(*snapshot[2]) != 2 {
t.Error("Unexpected number of items")
}
cl.Push([]byte("hello"))
cl.Push([]byte("world"))
lastChunkCount := len(*snapshot[len(snapshot)-1])
if lastChunkCount != 2 {
t.Error("Unexpected number of items:", lastChunkCount)
}
}