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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.text;
import java.util.List;
import org.junit.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotSame;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertTrue;
public class StringUtilitiesTest {
@Test
public void testEscape() {
assertEquals("abz019ABZ", StringUtilities.escape("abz019ABZ"));
assertEquals("\\t", StringUtilities.escape("\t"));
assertEquals("\\n", StringUtilities.escape("\n"));
assertEquals("\\r", StringUtilities.escape("\r"));
assertEquals("\\\"", StringUtilities.escape("\""));
assertEquals("\\f", StringUtilities.escape("\f"));
assertEquals("\\\\", StringUtilities.escape("\\"));
assertEquals("\\x05", StringUtilities.escape("" + (char) 5));
assertEquals("\\tA\\ncombined\\r\\x055test", StringUtilities.escape("\tA\ncombined\r" + ((char) 5) + "5test"));
assertEquals("A\\x20space\\x20separated\\x20string", StringUtilities.escape("A space separated string", ' '));
}
@Test
public void testUnescape() {
assertEquals("abz019ABZ", StringUtilities.unescape("abz019ABZ"));
assertEquals("\t", StringUtilities.unescape("\\t"));
assertEquals("\n", StringUtilities.unescape("\\n"));
assertEquals("\r", StringUtilities.unescape("\\r"));
assertEquals("\"", StringUtilities.unescape("\\\""));
assertEquals("\f", StringUtilities.unescape("\\f"));
assertEquals("\\", StringUtilities.unescape("\\\\"));
assertEquals("" + (char) 5, StringUtilities.unescape("\\x05"));
assertEquals("\tA\ncombined\r" + ((char) 5) + "5test", StringUtilities.unescape("\\tA\\ncombined\\r\\x055test"));
assertEquals("A space separated string", StringUtilities.unescape("A\\x20space\\x20separated\\x20string"));
}
@Test
public void testImplode() {
assertNull(StringUtilities.implode(null, null));
assertEquals(StringUtilities.implode(new String[0], null), "");
assertEquals(StringUtilities.implode(new String[] {"foo"}, null), "foo");
assertEquals(StringUtilities.implode(new String[] {"foo"}, "asdfsdfsadfsadfasdfs"), "foo");
assertEquals(StringUtilities.implode(new String[] {"foo", "bar"}, null), "foobar");
assertEquals(StringUtilities.implode(new String[] {"foo", "bar"}, "\n"), "foo\nbar");
assertEquals(StringUtilities.implode(new String[] {"foo"}, "\n"), "foo");
assertEquals(StringUtilities.implode(new String[] {"foo", "bar", null}, "\n"), "foo\nbar\nnull");
assertEquals(StringUtilities.implode(new String[] {"foo", "bar"}, "\n"), "foo\nbar");
assertEquals(StringUtilities.implode(new String[] {"foo", "bar", "baz"}, null), "foobarbaz");
}
@Test
public void testImplodeMultiline() {
assertEquals(StringUtilities.implodeMultiline(List.of("foo", "bar")), "foo\nbar");
assertEquals(StringUtilities.implodeMultiline(List.of("")), "");
assertNull(StringUtilities.implodeMultiline(null));
assertEquals(StringUtilities.implodeMultiline(List.of("\n")), "\n");
}
@Test
public void testTruncation() {
String a = "abbc";
assertSame(a, StringUtilities.truncateSequencesIfNecessary(a, 2));
assertNotSame(a, StringUtilities.truncateSequencesIfNecessary(a, 1));
assertEquals("abc", StringUtilities.truncateSequencesIfNecessary(a, 1));
assertEquals("abc", StringUtilities.truncateSequencesIfNecessary("aabbccc", 1));
assertEquals("abc", StringUtilities.truncateSequencesIfNecessary("abcc", 1));
assertEquals("abc", StringUtilities.truncateSequencesIfNecessary("aabc", 1));
assertEquals("abcb", StringUtilities.truncateSequencesIfNecessary("abcb", 1));
assertEquals("g g g g g g g g g g\n g g g g g g g g g g\n g g g g g g g g g g", StringUtilities.truncateSequencesIfNecessary("g g g g g g g g g g\n g g g g g g g g g g\n g g g g g g g g g g", 5));
}
@Test
public void testStripSuffix() {
assertEquals("abc", StringUtilities.stripSuffix("abc.def", ".def"));
assertEquals("abc.def", StringUtilities.stripSuffix("abc.def", ""));
assertTrue(StringUtilities.stripSuffix("", ".def").isEmpty());
assertTrue(StringUtilities.stripSuffix("", "").isEmpty());
}
}
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