3789983e89
Reviewed-by: darcy, ihse
93 lines
3.0 KiB
Java
93 lines
3.0 KiB
Java
/*
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* @test /nodynamiccopyright/
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* @bug 4209652 4363318
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* @summary Basic test for chained exceptions & Exception.getStackTrace().
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* @author Josh Bloch
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*/
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public class ChainedExceptions {
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public static void main(String args[]) {
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try {
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a();
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} catch(HighLevelException e) {
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StackTraceElement[] highTrace = e.getStackTrace();
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int depthTrim = highTrace.length - 2;
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check(e, highTrace[0], "a", 48);
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check(e, highTrace[1], "main", 11);
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Throwable mid = e.getCause();
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StackTraceElement[] midTrace = mid.getStackTrace();
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if (midTrace.length - depthTrim != 4)
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throw new RuntimeException("Mid depth");
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check(mid, midTrace[0], "c", 58);
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check(mid, midTrace[1], "b", 52);
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check(mid, midTrace[2], "a", 46);
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check(mid, midTrace[3], "main", 11);
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Throwable low = mid.getCause();
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StackTraceElement[] lowTrace = low.getStackTrace();
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if (lowTrace.length - depthTrim != 6)
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throw new RuntimeException("Low depth");
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check(low, lowTrace[0], "e", 65);
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check(low, lowTrace[1], "d", 62);
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check(low, lowTrace[2], "c", 56);
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check(low, lowTrace[3], "b", 52);
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check(low, lowTrace[4], "a", 46);
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check(low, lowTrace[5], "main", 11);
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if (low.getCause() != null)
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throw new RuntimeException("Low cause != null");
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}
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}
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static void a() throws HighLevelException {
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try {
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b();
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} catch(MidLevelException e) {
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throw new HighLevelException(e);
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}
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}
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static void b() throws MidLevelException {
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c();
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}
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static void c() throws MidLevelException {
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try {
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d();
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} catch(LowLevelException e) {
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throw new MidLevelException(e);
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}
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}
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static void d() throws LowLevelException {
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e();
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}
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static void e() throws LowLevelException {
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throw new LowLevelException();
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}
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private static final String OUR_CLASS = ChainedExceptions.class.getName();
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private static final String OUR_FILE_NAME = "ChainedExceptions.java";
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private static void check(Throwable t, StackTraceElement e, String methodName, int n) {
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if (!e.getClassName().equals(OUR_CLASS))
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throw new RuntimeException("Class: " + e, t);
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if (!e.getMethodName().equals(methodName))
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throw new RuntimeException("Method name: " + e, t);
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if (!e.getFileName().equals(OUR_FILE_NAME))
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throw new RuntimeException("File name: " + e, t);
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if (e.getLineNumber() != n)
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throw new RuntimeException("Line number: " + e, t);
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}
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}
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class HighLevelException extends Exception {
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HighLevelException(Throwable cause) { super(cause); }
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}
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class MidLevelException extends Exception {
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MidLevelException(Throwable cause) { super(cause); }
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}
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class LowLevelException extends Exception {
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}
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