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/*
* ============LICENSE_START=======================================================
* dcaegen2-collectors-veshv
* ================================================================================
* Copyright (C) 2018 NOKIA
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.dcae.collectors.veshv.utils.arrow
import arrow.core.None
import arrow.core.Option
import arrow.core.Some
import org.assertj.core.api.Assertions.assertThat
import org.jetbrains.spek.api.Spek
import org.jetbrains.spek.api.dsl.describe
import org.jetbrains.spek.api.dsl.given
import org.jetbrains.spek.api.dsl.it
import org.jetbrains.spek.api.dsl.on
import java.util.concurrent.atomic.AtomicReference
/**
* @author Piotr Jaszczyk <piotr.jaszczyk></piotr.jaszczyk>@nokia.com>
* @since August 2018
*/
internal class CoreKtTest : Spek({
describe("AtomicReference.getOption") {
given("empty atomic reference") {
val atomicReference = AtomicReference<String>()
on("getOption") {
val result = atomicReference.getOption()
it("should be None") {
assertThat(result).isEqualTo(None)
}
}
}
given("non-empty atomic reference") {
val initialValue = "reksio"
val atomicReference = AtomicReference(initialValue)
on("getOption") {
val result = atomicReference.getOption()
it("should be Some($initialValue)") {
assertThat(result).isEqualTo(Some(initialValue))
}
}
}
}
describe("Option.fromNullablesChain") {
given("one non-null element") {
val just = "some text"
on("calling factory") {
val result = Option.fromNullablesChain(just)
it("should return Some($just)") {
assertThat(result).isEqualTo(Some(just))
}
}
}
given("one null element") {
val just: String? = null
on("calling factory") {
val result = Option.fromNullablesChain(just)
it("should return None") {
assertThat(result).isEqualTo(None)
}
}
}
given("first non-null element") {
val first = "some text"
val second: String? = null
var secondAskedForValue = false
on("calling factory") {
val result = Option.fromNullablesChain(first, { secondAskedForValue = true; second })
it("should return Some($first)") {
assertThat(result).isEqualTo(Some(first))
}
it("should have not called second provider (should be lazy)") {
assertThat(secondAskedForValue).isFalse()
}
}
}
given("two non-null elements") {
val first = "some text"
val second = "another text"
on("calling factory") {
val result = Option.fromNullablesChain(first, { second })
it("should return Some($first)") {
assertThat(result).isEqualTo(Some(first))
}
}
}
given("two null elements") {
val first: String? = null
val second: String? = null
on("calling factory") {
val result = Option.fromNullablesChain(first, { second })
it("should return None") {
assertThat(result).isEqualTo(None)
}
}
}
given("second non-null element") {
val first: String? = null
val second = "another text"
on("calling factory") {
val result = Option.fromNullablesChain(first, { second })
it("should return Some($second)") {
assertThat(result).isEqualTo(Some(second))
}
}
}
}
})
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