jdk-24/test/jdk/java/lang/StringBuilder/Insert.java
Aleksey Shipilev 081fa3e715 8260927: StringBuilder::insert is incorrect without Compact Strings
Reviewed-by: redestad, alanb, rriggs, jlaskey
2021-02-02 18:00:43 +00:00

53 lines
2.1 KiB
Java

/*
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import org.testng.annotations.Test;
import static org.testng.Assert.assertEquals;
/**
* @test
* @bug 4914802 8257511
* @summary Test StringBuilder.insert sanity tests
* @run testng/othervm -XX:-CompactStrings Insert
* @run testng/othervm -XX:+CompactStrings Insert
*/
@Test
public class Insert {
public void insertFalse() {
// Caused an infinite loop before 4914802
StringBuilder sb = new StringBuilder();
assertEquals("false", sb.insert(0, false).toString());
}
public void insertOffset() {
// 8254082 made the String variant cause an AIOOBE, fixed in 8257511
assertEquals("efabc", new StringBuilder("abc").insert(0, "def", 1, 3).toString());
assertEquals("efabc", new StringBuilder("abc").insert(0, new StringBuilder("def"), 1, 3).toString());
// insert(I[CII) and insert(ILjava/lang/CharSequence;II) are inconsistently specified
assertEquals("efabc", new StringBuilder("abc").insert(0, new char[] {'d', 'e', 'f'}, 1, 2).toString());
}
}