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Correct Prometheus formatting error with tags; remove training unders…
…core in name when units are not present (helidon-io#3453) Signed-off-by: [email protected] <[email protected]>
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99 changes: 99 additions & 0 deletions
99
metrics/metrics/src/test/java/io/helidon/metrics/MetricsCustomMatchers.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| /* | ||
| * Copyright (c) 2021 Oracle and/or its affiliates. | ||
| * | ||
| * 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 io.helidon.metrics; | ||
|
|
||
| import org.hamcrest.Description; | ||
| import org.hamcrest.TypeSafeMatcher; | ||
|
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| import java.util.Map; | ||
| import java.util.function.Predicate; | ||
|
|
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| /** | ||
| * Custom Hamcrest matchers used in metrics tests. | ||
| */ | ||
| class MetricsCustomMatchers { | ||
|
|
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| /** | ||
| * A group of matchers dealing with map contents. | ||
| */ | ||
| static abstract class MapContains extends TypeSafeMatcher<Map<?, ?>> { | ||
|
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| static All all(Map<?, ?> targetValues) { | ||
| return new All(targetValues); | ||
| } | ||
|
|
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| static None none(Map<?, ?> targetValues) { | ||
| return new None(targetValues); | ||
| } | ||
|
|
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| private final Map<?, ?> targetValues; | ||
| private final String descriptionLabel; | ||
|
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| MapContains(Map<?, ?> targetValues, String descriptionLabel) { | ||
| this.targetValues = targetValues; | ||
| this.descriptionLabel = descriptionLabel; | ||
| } | ||
|
|
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| protected Map<?, ?> targetValues() { | ||
| return targetValues; | ||
| } | ||
|
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| protected Predicate<Map.Entry<?, ?>> entryChecker(Map<?, ?> candidateMap) { | ||
| return (Map.Entry<?, ?> expectedEntry) -> candidateMap.containsKey(expectedEntry.getKey()) | ||
| && candidateMap.get(expectedEntry.getKey()) | ||
| .equals(expectedEntry.getValue()); | ||
| } | ||
|
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| @Override | ||
| public void describeTo(Description description) { | ||
| description.appendText("tags containing ") | ||
| .appendText(descriptionLabel) | ||
| .appendText(" of ") | ||
| .appendText(targetValues.toString()); | ||
| } | ||
|
|
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| /** | ||
| * Matcher for checking that all key/value pairs in the target values appear in the candidate map. | ||
| */ | ||
| static class All extends MapContains { | ||
|
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| All(Map<?, ?> targetValues) { | ||
| super(targetValues, "all"); | ||
| } | ||
|
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| @Override | ||
| protected boolean matchesSafely(Map<?, ?> candidateMap) { | ||
| return targetValues().entrySet() | ||
| .stream() | ||
| .allMatch(entryChecker(candidateMap)); | ||
| } | ||
| } | ||
|
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| static class None extends MapContains { | ||
|
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| None(Map<?, ?> targetValues) { | ||
| super(targetValues, "none"); | ||
| } | ||
|
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| @Override | ||
| protected boolean matchesSafely(Map<?, ?> candidateMap) { | ||
| return targetValues().entrySet() | ||
| .stream() | ||
| .noneMatch(entryChecker(candidateMap)); | ||
| } | ||
| } | ||
| } | ||
| } |