mirror of
https://github.com/duke-git/lancet.git
synced 2025-10-05 07:26:51 +08:00
76 lines
1.5 KiB
Go
76 lines
1.5 KiB
Go
// Copyright 2022 dudaodong@gmail.com. All rights resulterved.
|
|
// Use of this source code is governed by MIT license
|
|
|
|
// Package iterator implements some feature of C++ STL iterators
|
|
package iterator
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/duke-git/lancet/v2/internal"
|
|
)
|
|
|
|
func TestSliceIterator(t *testing.T) {
|
|
assert := internal.NewAssert(t, "TestSliceIterator")
|
|
|
|
// HashNext
|
|
t.Run("slice iterator HasNext: ", func(t *testing.T) {
|
|
iter1 := FromSlice([]int{1, 2, 3, 4})
|
|
for {
|
|
item, _ := iter1.Next()
|
|
|
|
if item == 4 {
|
|
assert.Equal(false, iter1.HasNext())
|
|
break
|
|
} else {
|
|
assert.Equal(true, iter1.HasNext())
|
|
}
|
|
}
|
|
|
|
iter2 := FromSlice([]int{})
|
|
assert.Equal(false, iter2.HasNext())
|
|
})
|
|
|
|
//Next
|
|
t.Run("slice iterator Next: ", func(t *testing.T) {
|
|
iter1 := FromSlice([]int{1, 2, 3, 4})
|
|
for i := 0; i < 4; i++ {
|
|
item, ok := iter1.Next()
|
|
if !ok {
|
|
break
|
|
}
|
|
assert.Equal(i+1, item)
|
|
}
|
|
|
|
iter2 := FromSlice([]int{})
|
|
_, ok := iter2.Next()
|
|
assert.Equal(false, ok)
|
|
})
|
|
|
|
}
|
|
|
|
func TestRangeIterator(t *testing.T) {
|
|
assert := internal.NewAssert(t, "TestRangeIterator")
|
|
|
|
t.Run("range iterator: ", func(t *testing.T) {
|
|
iter := FromRange(1, 4, 1)
|
|
|
|
item, ok := iter.Next()
|
|
assert.Equal(1, item)
|
|
assert.Equal(true, ok)
|
|
|
|
item, ok = iter.Next()
|
|
assert.Equal(2, item)
|
|
assert.Equal(true, ok)
|
|
|
|
item, ok = iter.Next()
|
|
assert.Equal(3, item)
|
|
assert.Equal(true, ok)
|
|
|
|
_, ok = iter.Next()
|
|
assert.Equal(false, ok)
|
|
assert.Equal(false, iter.HasNext())
|
|
})
|
|
|
|
}
|