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HBASE-22669 Add unit tests for org.apache.hadoop.hbase.util.Strings (#…
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EricHetti authored and petersomogyi committed Jul 10, 2019
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/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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 org.apache.hadoop.hbase.util;

import org.apache.hadoop.hbase.HBaseClassTestRule;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Assert;
import org.junit.ClassRule;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.ExpectedException;

@Category({SmallTests.class})
public class TestStrings {

@Rule
public final ExpectedException thrown = ExpectedException.none();

@ClassRule
public static final HBaseClassTestRule CLASS_RULE =
HBaseClassTestRule.forClass(TestStrings.class);

@Test
public void testAppendKeyValue() {
Assert.assertEquals("foo, bar=baz", Strings.appendKeyValue(
new StringBuilder("foo"), "bar", "baz").toString());
Assert.assertEquals("bar->baz", Strings.appendKeyValue(
new StringBuilder(), "bar", "baz", "->", "| ").toString());
Assert.assertEquals("foo, bar=baz", Strings.appendKeyValue(
new StringBuilder("foo"), "bar", "baz", "=", ", ").toString());
Assert.assertEquals("foo| bar->baz", Strings.appendKeyValue(
new StringBuilder("foo"), "bar", "baz", "->", "| ").toString());
}

@Test
public void testDomainNamePointerToHostName() {
Assert.assertNull(Strings.domainNamePointerToHostName(null));
Assert.assertEquals("foo",
Strings.domainNamePointerToHostName("foo"));
Assert.assertEquals("foo.com",
Strings.domainNamePointerToHostName("foo.com"));
Assert.assertEquals("foo.bar.com",
Strings.domainNamePointerToHostName("foo.bar.com"));
Assert.assertEquals("foo.bar.com",
Strings.domainNamePointerToHostName("foo.bar.com."));
}

@Test
public void testPadFront() {
Assert.assertEquals("ddfoo", Strings.padFront("foo", 'd', 5));

thrown.expect(IllegalArgumentException.class);
Strings.padFront("foo", 'd', 1);
}
}

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