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39 changes: 39 additions & 0 deletions
39
heron/api/src/java/org/apache/heron/streamlet/impl/utils/StreamletUtils.java
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| @@ -0,0 +1,39 @@ | ||
| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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. | ||
| */ | ||
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| package org.apache.heron.streamlet.impl.utils; | ||
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| public final class StreamletUtils { | ||
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| private StreamletUtils() { | ||
| } | ||
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| /** | ||
| * Verifies the requirement as the utility function. | ||
| * @param requirement The requirement to verify | ||
| * @param errorMessage The error message | ||
| * @throws IllegalArgumentException if the requirement fails | ||
| */ | ||
| public static void require(Boolean requirement, String errorMessage) { | ||
| if (!requirement) { | ||
| throw new IllegalArgumentException(errorMessage); | ||
| } | ||
| } | ||
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| } |
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38 changes: 38 additions & 0 deletions
38
heron/api/tests/java/org/apache/heron/streamlet/impl/utils/StreamletUtilsTest.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,38 @@ | ||
| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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. | ||
| */ | ||
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| package org.apache.heron.streamlet.impl.utils; | ||
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| import org.junit.Test; | ||
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| public class StreamletUtilsTest { | ||
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| @Test | ||
| public void testRequire() { | ||
| String text = "test_text"; | ||
| StreamletUtils.require(!text.isEmpty(), "text should not be blank"); | ||
| } | ||
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| @Test(expected = IllegalArgumentException.class) | ||
| public void testRequireWithNegativeCase() { | ||
| String text = ""; | ||
| StreamletUtils.require(!text.isEmpty(), "text should not be blank"); | ||
| } | ||
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| } |