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| 1 | +/* |
| 2 | + * Copyright 2017 the original author or authors. |
| 3 | + * |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + * you may not use this file except in compliance with the License. |
| 6 | + * You may obtain a copy of the License at |
| 7 | + * |
| 8 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | + * |
| 10 | + * Unless required by applicable law or agreed to in writing, software |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + * See the License for the specific language governing permissions and |
| 14 | + * limitations under the License. |
| 15 | + */ |
| 16 | +package workshop; |
| 17 | + |
| 18 | +import reactor.core.publisher.Flux; |
| 19 | +import reactor.core.publisher.Mono; |
| 20 | +import reactor.test.StepVerifier; |
| 21 | + |
| 22 | +import org.junit.Test; |
| 23 | + |
| 24 | +/** |
| 25 | + * Testing reactive transformations. |
| 26 | + * |
| 27 | + * @author Mark Paluch |
| 28 | + */ |
| 29 | +public class Step4Transformations { |
| 30 | + |
| 31 | + @Test |
| 32 | + public void monoShouldMapValueToUpperCaseHelloWorld() { |
| 33 | + |
| 34 | + Mono<String> mono = Mono.just("Heisenberg"); |
| 35 | + |
| 36 | + // TODO: Replace this line to transform the emitted element to uppercase |
| 37 | + // mono = … |
| 38 | + |
| 39 | + StepVerifier.create(mono).expectNext("HEISENBERG").verifyComplete(); |
| 40 | + } |
| 41 | + |
| 42 | + @Test |
| 43 | + public void fluxShouldMapValueToUpperCaseHelloWorld() { |
| 44 | + |
| 45 | + Flux<String> flux = Flux.just("Mike", "Gustavo"); |
| 46 | + |
| 47 | + // TODO: Replace this line to transform the emitted element to uppercase |
| 48 | + // flux = … |
| 49 | + |
| 50 | + StepVerifier.create(flux).expectNext("MIKE", "GUSTAVO").verifyComplete(); |
| 51 | + } |
| 52 | + |
| 53 | + @Test |
| 54 | + public void monoShouldEmitIndividualCharactersAsString() { |
| 55 | + |
| 56 | + Mono<String> mono = Mono.just("Schraderbräu"); |
| 57 | + |
| 58 | + // TODO: Replace this line to emit each character as single element |
| 59 | + Flux<String> flux = Flux.empty(); |
| 60 | + |
| 61 | + StepVerifier.create(flux).expectNext("S", "c", "h", "r", "a", "d", "e", "r", "b", "r", "ä", "u").verifyComplete(); |
| 62 | + } |
| 63 | + |
| 64 | + @Test |
| 65 | + public void fluxShouldConcatTwoMonos() { |
| 66 | + |
| 67 | + Mono<String> hello = Mono.just("Breaking"); |
| 68 | + Mono<String> world = Mono.just("Bad"); |
| 69 | + |
| 70 | + // TODO: Replace this line to compose a stream from the two Monos |
| 71 | + Flux<String> flux = Flux.empty(); |
| 72 | + |
| 73 | + StepVerifier.create(flux).expectNext("Breaking", "Bad").verifyComplete(); |
| 74 | + } |
| 75 | +} |
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