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stream_test.go
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stream_test.go
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package fpgo
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestFromArrayMapReduce(t *testing.T) {
var s *StreamDef[string]
var tempString string
s = StreamFrom("1", "2", "3", "4")
tempString = ""
for _, v := range s.ToArray() {
tempString += v
}
assert.Equal(t, "1234", tempString)
s = s.Map(func(item string, index int) string {
val := item
result := "v" + val
return result
})
tempString = ""
for _, v := range s.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "v1v2v3v4", tempString)
tempString = ""
s2 := StreamFromArray([]string{"1", "2", "3", "4"})
for _, v := range s2.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "1234", tempString)
s2 = s2.Map(func(item string, index int) string {
val := Maybe.Just(item).ToString()
var result string = "v" + val
return result
})
tempString = ""
for _, v := range s2.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "v1v2v3v4", tempString)
s3 := StreamFrom(1, 2, 3, 4)
tempString = ""
for _, v := range s3.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "1234", tempString)
s3 = s3.Map(func(item int, index int) int {
return item * item
})
tempString = ""
for _, v := range s3.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "14916", tempString)
s3 = StreamFrom(1, 2, 3, 4)
tempString = ""
for _, v := range s3.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "1234", tempString)
s3 = s3.Map(func(item int, index int) int {
return item * item
})
tempString = ""
for _, v := range s3.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "14916", tempString)
s3 = StreamFrom(1, 2, 3, 4)
tempString = ""
for _, v := range s3.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "1234", tempString)
s3 = s3.Map(func(item int, index int) int {
return item * item
})
tempString = ""
for _, v := range s3.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "14916", tempString)
s4 := StreamFrom(true, false, true, false)
tempString = ""
for _, v := range s4.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "truefalsetruefalse", tempString)
s3 = StreamFrom(1, 2, 3, 4)
tempString = ""
for _, v := range s3.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "1234", tempString)
s3 = StreamFrom(1, 2, 3, 4)
tempString = ""
for _, v := range s3.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "1234", tempString)
s3 = StreamFrom(1, 2, 3, 4)
tempString = ""
for _, v := range s3.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "1234", tempString)
s3 = StreamFrom(1, 2, 3, 4)
tempString = ""
for _, v := range s3.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "1234", tempString)
s3 = StreamFrom(1, 2, 3, 4)
tempString = ""
for _, v := range s3.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "1234", tempString)
}
func TestFilter(t *testing.T) {
var s *StreamDef[int]
var tempString string
s = StreamFromArray([]int{}).Append(1, 1).Extend(StreamFromArray([]int{2, 3, 4}))
tempString = ""
for _, v := range s.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "11234", tempString)
s = s.Distinct()
tempString = ""
for _, v := range s.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "1234", tempString)
s = s.FilterNotNil()
tempString = ""
for _, v := range s.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "1234", tempString)
s = s.Filter(func(item int, index int) bool {
return item > 1 && item < 4
})
tempString = ""
for _, v := range s.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "23", tempString)
s = s.Reject(func(item int, index int) bool {
return item > 2
})
tempString = ""
for _, v := range s.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "2", tempString)
}
func TestSort(t *testing.T) {
var s *StreamDef[int]
var tempString string
s = StreamFrom(11).Extend(StreamFrom(2, 3, 4, 5)).Remove(4)
tempString = ""
for _, v := range s.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "11234", tempString)
s = StreamFrom(11).Concat([]int{2, 3, 4, 5}).RemoveItem(4)
tempString = ""
for _, v := range s.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "11235", tempString)
tempString = ""
for _, v := range s.Reverse().ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "53211", tempString)
s = StreamFrom(11).Concat([]int{2, 3, 4, 5}).Remove(4)
tempString = ""
for _, v := range s.ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "11234", tempString)
tempString = ""
for _, v := range s.SortByIndex(func(i, j int) bool {
vali, _ := Maybe.Just(s.Get(i)).ToInt()
valj, _ := Maybe.Just(s.Get(j)).ToInt()
return vali < valj
}).ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "23411", tempString)
tempString = ""
for _, v := range s.Sort(func(a, b int) bool {
return a < b
}).ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString()
}
assert.Equal(t, "23411", tempString)
}
func TestStreamSetOperation(t *testing.T) {
var s *StreamDef[int]
var s2 *StreamDef[int]
var s3 *StreamDef[int]
var tempString string
s = StreamFrom(11, 2, 3, 4, 5)
s2 = StreamFrom(9, 2, 5, 6)
s3 = StreamFrom(2, 5)
assert.Equal(t, true, s.Contains(4))
assert.Equal(t, false, s.Contains(6))
assert.Equal(t, true, s.IsSuperset(s3))
assert.Equal(t, true, s2.IsSuperset(s3))
assert.Equal(t, true, s3.IsSubset(s))
assert.Equal(t, true, s3.IsSubset(s2))
assert.Equal(t, false, s.IsSuperset(s2))
tempString = ""
for _, v := range s.Clone().Intersection(s2).ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "2/5/", tempString)
assert.Equal(t, 2, s.Intersection(s2).Len())
tempString = ""
for _, v := range s.Extend(s2).Distinct().ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "11/2/3/4/5/9/6/", tempString)
assert.Equal(t, 7, s.Extend(s2).Distinct().Len())
tempString = ""
for _, v := range s.Minus(s2).ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "11/3/4/", tempString)
tempString = ""
for _, v := range s2.Minus(s).ToArray() {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "9/6/", tempString)
}
func TestSetSetOperation(t *testing.T) {
var s *MapSetDef[int, bool]
var s2 *MapSetDef[int, bool]
var s3 *MapSetDef[int, bool]
var tempString string
s = SetFrom[int, bool](11, 2, 3, 4, 5)
s2 = SetFrom[int, bool](9, 2, 5, 6)
s3 = SetFrom[int, bool](2, 5)
assert.Equal(t, true, s.ContainsKey(4))
assert.Equal(t, false, s.ContainsKey(6))
assert.Equal(t, true, s.IsSupersetByKey(s3))
assert.Equal(t, true, s2.IsSupersetByKey(s3))
assert.Equal(t, true, s3.IsSubsetByKey(s))
assert.Equal(t, true, s3.IsSubsetByKey(s2))
assert.Equal(t, false, s.IsSupersetByKey(s2))
tempString = ""
for _, v := range SortOrderedAscending(s.Clone().Intersection(s2).Keys()...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "2/5/", tempString)
assert.Equal(t, 2, s.Intersection(s2).Size())
tempString = ""
for _, v := range SortOrderedAscending(s.Union(s2).Keys()...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "2/3/4/5/6/9/11/", tempString)
assert.Equal(t, 7, s.Union(s2).Size())
tempString = ""
for _, v := range SortOrderedAscending(s.Minus(s2).Keys()...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "3/4/11/", tempString)
tempString = ""
for _, v := range SortOrderedAscending(s2.Minus(s).Keys()...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "6/9/", tempString)
}
func TestStreamSetSetOperation(t *testing.T) {
var s *StreamSetDef[int, int]
var s2 *StreamSetDef[int, int]
var s3 *StreamSetDef[int, int]
var tempString string
s = StreamSetFrom[int, int](11, 2, 3, 4, 5)
s2 = StreamSetFrom[int, int](9, 2, 5, 6)
s3 = StreamSetFrom[int, int](2, 5)
s.Set(2, StreamFrom(70, 71, 72))
s2.Set(2, StreamFrom(73, 74, 75))
s2.Set(6, StreamFrom(6, 6, 6))
s2.Set(9, StreamFrom(9, 9, 9))
s3.Set(2, StreamFrom(71, 73, 78))
assert.Equal(t, true, s.ContainsKey(4))
assert.Equal(t, false, s.ContainsKey(6))
assert.Equal(t, true, s.IsSupersetByKey(s3.AsMapSet()))
assert.Equal(t, true, s2.IsSupersetByKey(s3.AsMapSet()))
assert.Equal(t, true, s3.IsSubsetByKey(s.AsMapSet()))
assert.Equal(t, true, s3.IsSubsetByKey(s2.AsMapSet()))
assert.Equal(t, false, s.IsSupersetByKey(s2.AsMapSet()))
tempString = ""
for _, v := range SortOrderedAscending(s.Clone().Intersection(s2).Keys()...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "2/5/", tempString)
assert.Equal(t, 2, s.Intersection(s2).Size())
tempString = ""
for _, v := range SortOrderedAscending(s.Union(s2).Keys()...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "2/3/4/5/6/9/11/", tempString)
assert.Equal(t, 7, s.Union(s2).Size())
tempString = ""
for _, v := range SortOrderedAscending(s.Minus(s2.AsMapSet()).Keys()...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "3/4/11/", tempString)
tempString = ""
for _, v := range SortOrderedAscending(s2.Minus(s.AsMapSet()).Keys()...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "6/9/", tempString)
tempString = ""
for _, v := range SortOrderedAscending(Map(streamIntTransformer, s2.Union(s).Values()...)...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "6,6,6,end/70,71,72,73,74,75,end/9,9,9,end/end/end/end/end/", tempString)
tempString = ""
for _, v := range SortOrderedAscending(Map(streamIntTransformer, s2.Minus(s.AsMapSet()).Values()...)...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "6,6,6,end/9,9,9,end/", tempString)
tempString = ""
for _, v := range SortOrderedAscending(Map(streamIntTransformer, s2.Intersection(s).Values()...)...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "end/end/", tempString)
tempString = ""
for _, v := range SortOrderedAscending(Map(streamIntTransformer, s.Intersection(s2).Values()...)...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "end/end/", tempString)
tempString = ""
for _, v := range SortOrderedAscending(Map(streamIntTransformer, s.Intersection(s3).Values()...)...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "71,end/end/", tempString)
tempString = ""
for _, v := range SortOrderedAscending(Map(streamIntTransformer, s2.Intersection(s3).Values()...)...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "73,end/end/", tempString)
tempString = ""
for _, v := range SortOrderedAscending(Map(streamIntTransformer, s.MinusStreams(s3).Values()...)...) {
tempString += Maybe.Just(v).ToMaybe().ToString() + "/"
}
assert.Equal(t, "70,72,end/end/end/end/end/", tempString)
}
func streamIntTransformer(s *StreamDef[int]) string {
result := ""
for _, item := range SortOrderedAscending(s.ToArray()...) {
result += Maybe.Just(item).ToMaybe().ToString() + ","
}
return result + "end"
}