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fp-go/http/headers/headers_test.go

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// Copyright (c) 2023 IBM Corp.
// All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package headers
import (
"net/http"
"testing"
A "github.com/IBM/fp-go/array"
"github.com/IBM/fp-go/eq"
LT "github.com/IBM/fp-go/optics/lens/testing"
O "github.com/IBM/fp-go/option"
RG "github.com/IBM/fp-go/record/generic"
S "github.com/IBM/fp-go/string"
"github.com/stretchr/testify/assert"
)
var (
sEq = eq.FromEquals(S.Eq)
valuesEq = RG.Eq[http.Header](A.Eq(sEq))
)
func TestLaws(t *testing.T) {
name := "Content-Type"
fieldLaws := LT.AssertLaws[http.Header, O.Option[string]](t, O.Eq(sEq), valuesEq)(AtValue(name))
n := O.None[string]()
s1 := O.Some("s1")
def := make(http.Header)
v1 := make(http.Header)
v1.Set(name, "v1")
v2 := make(http.Header)
v2.Set("Other-Header", "v2")
assert.True(t, fieldLaws(def, n))
assert.True(t, fieldLaws(v1, n))
assert.True(t, fieldLaws(v2, n))
assert.True(t, fieldLaws(def, s1))
assert.True(t, fieldLaws(v1, s1))
assert.True(t, fieldLaws(v2, s1))
}