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43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
// Copyright (c) 2023 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package stateless
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import (
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"testing"
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F "github.com/IBM/fp-go/function"
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P "github.com/IBM/fp-go/pair"
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"github.com/stretchr/testify/assert"
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)
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func TestScan(t *testing.T) {
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src := From("a", "b", "c")
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dst := F.Pipe1(
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src,
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Scan(func(cur P.Pair[int, string], val string) P.Pair[int, string] {
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return P.MakePair(P.Head(cur)+1, val)
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}, P.MakePair(0, "")),
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)
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assert.Equal(t, ToArray(From(
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P.MakePair(1, "a"),
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P.MakePair(2, "b"),
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P.MakePair(3, "c"),
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)), ToArray(dst))
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}
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