1
0
mirror of https://github.com/MontFerret/ferret.git synced 2024-12-14 11:23:02 +02:00
ferret/pkg/runtime/collections/iterator_test.go
2018-09-18 16:42:38 -04:00

357 lines
6.8 KiB
Go

package collections_test
import (
"github.com/MontFerret/ferret/pkg/runtime/collections"
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
. "github.com/smartystreets/goconvey/convey"
"testing"
)
func TestSliceIterator(t *testing.T) {
Convey("Should iterate over a slice", t, func() {
arr := []core.Value{
values.NewInt(1),
values.NewInt(2),
values.NewInt(3),
values.NewInt(4),
values.NewInt(5),
}
iter := collections.NewSliceIterator(arr)
res := make([]core.Value, 0, len(arr))
pos := 0
for iter.HasNext() {
item, key, err := iter.Next()
So(err, ShouldBeNil)
So(key.Unwrap(), ShouldEqual, pos)
res = append(res, item)
pos += 1
}
So(res, ShouldHaveLength, len(arr))
})
Convey("Should iterate over a slice in the same order", t, func() {
arr := []core.Value{
values.NewInt(1),
values.NewInt(2),
values.NewInt(3),
values.NewInt(4),
values.NewInt(5),
}
iter := collections.NewSliceIterator(arr)
res := make([]core.Value, 0, len(arr))
for iter.HasNext() {
item, _, err := iter.Next()
So(err, ShouldBeNil)
res = append(res, item)
}
for idx := range arr {
expected := arr[idx]
actual := res[idx]
So(actual, ShouldEqual, expected)
}
})
Convey("Should return an error when exhausted", t, func() {
arr := []core.Value{
values.NewInt(1),
values.NewInt(2),
values.NewInt(3),
values.NewInt(4),
values.NewInt(5),
}
iter := collections.NewSliceIterator(arr)
res := make([]core.Value, 0, len(arr))
for iter.HasNext() {
item, _, err := iter.Next()
So(err, ShouldBeNil)
res = append(res, item)
}
item, _, err := iter.Next()
So(item, ShouldEqual, values.None)
So(err, ShouldBeError)
})
Convey("Should NOT iterate over an empty slice", t, func() {
arr := []core.Value{}
iter := collections.NewSliceIterator(arr)
var iterated bool
for iter.HasNext() {
iterated = true
}
So(iterated, ShouldBeFalse)
})
}
func TestMapIterator(t *testing.T) {
Convey("Should iterate over a map", t, func() {
m := map[string]core.Value{
"one": values.NewInt(1),
"two": values.NewInt(2),
"three": values.NewInt(3),
"four": values.NewInt(4),
"five": values.NewInt(5),
}
iter := collections.NewMapIterator(m)
res := make([]core.Value, 0, len(m))
for iter.HasNext() {
item, key, err := iter.Next()
So(err, ShouldBeNil)
expected, exists := m[key.String()]
So(exists, ShouldBeTrue)
So(expected, ShouldEqual, item)
res = append(res, item)
}
So(res, ShouldHaveLength, len(m))
})
Convey("Should return an error when exhausted", t, func() {
m := map[string]core.Value{
"one": values.NewInt(1),
"two": values.NewInt(2),
"three": values.NewInt(3),
"four": values.NewInt(4),
"five": values.NewInt(5),
}
iter := collections.NewMapIterator(m)
res := make([]core.Value, 0, len(m))
for iter.HasNext() {
item, _, err := iter.Next()
So(err, ShouldBeNil)
res = append(res, item)
}
item, _, err := iter.Next()
So(item, ShouldEqual, values.None)
So(err, ShouldBeError)
})
Convey("Should NOT iterate over a empty map", t, func() {
m := make(map[string]core.Value)
iter := collections.NewMapIterator(m)
var iterated bool
for iter.HasNext() {
iterated = true
}
So(iterated, ShouldBeFalse)
})
}
func TestArrayIterator(t *testing.T) {
Convey("Should iterate over an array", t, func() {
arr := values.NewArrayWith(
values.NewInt(1),
values.NewInt(2),
values.NewInt(3),
values.NewInt(4),
values.NewInt(5),
)
iter := collections.NewArrayIterator(arr)
res := make([]core.Value, 0, arr.Length())
pos := 0
for iter.HasNext() {
item, key, err := iter.Next()
So(err, ShouldBeNil)
So(key.Unwrap(), ShouldEqual, pos)
res = append(res, item)
pos += 1
}
So(res, ShouldHaveLength, arr.Length())
})
Convey("Should iterate over an array in the same order", t, func() {
arr := values.NewArrayWith(
values.NewInt(1),
values.NewInt(2),
values.NewInt(3),
values.NewInt(4),
values.NewInt(5),
)
iter := collections.NewArrayIterator(arr)
res := make([]core.Value, 0, arr.Length())
for iter.HasNext() {
item, _, err := iter.Next()
So(err, ShouldBeNil)
res = append(res, item)
}
arr.ForEach(func(expected core.Value, idx int) bool {
actual := res[idx]
So(actual, ShouldEqual, expected)
return true
})
})
Convey("Should return an error when exhausted", t, func() {
arr := values.NewArrayWith(
values.NewInt(1),
values.NewInt(2),
values.NewInt(3),
values.NewInt(4),
values.NewInt(5),
)
iter := collections.NewArrayIterator(arr)
res := make([]core.Value, 0, arr.Length())
for iter.HasNext() {
item, _, err := iter.Next()
So(err, ShouldBeNil)
res = append(res, item)
}
item, _, err := iter.Next()
So(item, ShouldEqual, values.None)
So(err, ShouldBeError)
})
Convey("Should NOT iterate over an empty array", t, func() {
arr := values.NewArray(10)
iter := collections.NewArrayIterator(arr)
var iterated bool
for iter.HasNext() {
iterated = true
}
So(iterated, ShouldBeFalse)
})
}
func TestObjectIterator(t *testing.T) {
Convey("Should iterate over a map", t, func() {
m := values.NewObjectWith(
values.NewObjectProperty("one", values.NewInt(1)),
values.NewObjectProperty("two", values.NewInt(2)),
values.NewObjectProperty("three", values.NewInt(3)),
values.NewObjectProperty("four", values.NewInt(4)),
values.NewObjectProperty("five", values.NewInt(5)),
)
iter := collections.NewObjectIterator(m)
res := make([]core.Value, 0, m.Length())
for iter.HasNext() {
item, key, err := iter.Next()
So(err, ShouldBeNil)
expected, exists := m.Get(values.NewString(key.String()))
So(exists, ShouldBeTrue)
So(expected, ShouldEqual, item)
res = append(res, item)
}
So(res, ShouldHaveLength, m.Length())
})
Convey("Should return an error when exhausted", t, func() {
m := values.NewObjectWith(
values.NewObjectProperty("one", values.NewInt(1)),
values.NewObjectProperty("two", values.NewInt(2)),
values.NewObjectProperty("three", values.NewInt(3)),
values.NewObjectProperty("four", values.NewInt(4)),
values.NewObjectProperty("five", values.NewInt(5)),
)
iter := collections.NewObjectIterator(m)
res := make([]core.Value, 0, m.Length())
for iter.HasNext() {
item, _, err := iter.Next()
So(err, ShouldBeNil)
res = append(res, item)
}
item, _, err := iter.Next()
So(item, ShouldEqual, values.None)
So(err, ShouldBeError)
})
Convey("Should NOT iterate over a empty map", t, func() {
m := values.NewObject()
iter := collections.NewObjectIterator(m)
var iterated bool
for iter.HasNext() {
iterated = true
}
So(iterated, ShouldBeFalse)
})
}