J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * @test /nodynamiccopyright/ |
| 3 | * @bug 4209652 4363318 |
| 4 | * @summary Basic test for chained exceptions & Exception.getStackTrace(). |
| 5 | * @author Josh Bloch |
| 6 | */ |
| 7 | |
| 8 | public class ChainedExceptions { |
| 9 | public static void main(String args[]) { |
| 10 | try { |
| 11 | a(); |
| 12 | } catch(HighLevelException e) { |
| 13 | StackTraceElement[] highTrace = e.getStackTrace(); |
| 14 | int depthTrim = highTrace.length - 2; |
| 15 | |
| 16 | check(highTrace[0], "a", 48); |
| 17 | check(highTrace[1], "main", 11); |
| 18 | |
| 19 | Throwable mid = e.getCause(); |
| 20 | StackTraceElement[] midTrace = mid.getStackTrace(); |
| 21 | if (midTrace.length - depthTrim != 4) |
| 22 | throw new RuntimeException("Mid depth"); |
| 23 | check(midTrace[0], "c", 58); |
| 24 | check(midTrace[1], "b", 52); |
| 25 | check(midTrace[2], "a", 46); |
| 26 | check(midTrace[3], "main", 11); |
| 27 | |
| 28 | Throwable low = mid.getCause(); |
| 29 | StackTraceElement[] lowTrace = low.getStackTrace(); |
| 30 | if (lowTrace.length - depthTrim != 6) |
| 31 | throw new RuntimeException("Low depth"); |
| 32 | check(lowTrace[0], "e", 65); |
| 33 | check(lowTrace[1], "d", 62); |
| 34 | check(lowTrace[2], "c", 56); |
| 35 | check(lowTrace[3], "b", 52); |
| 36 | check(lowTrace[4], "a", 46); |
| 37 | check(lowTrace[5], "main", 11); |
| 38 | |
| 39 | if (low.getCause() != null) |
| 40 | throw new RuntimeException("Low cause != null"); |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | static void a() throws HighLevelException { |
| 45 | try { |
| 46 | b(); |
| 47 | } catch(MidLevelException e) { |
| 48 | throw new HighLevelException(e); |
| 49 | } |
| 50 | } |
| 51 | static void b() throws MidLevelException { |
| 52 | c(); |
| 53 | } |
| 54 | static void c() throws MidLevelException { |
| 55 | try { |
| 56 | d(); |
| 57 | } catch(LowLevelException e) { |
| 58 | throw new MidLevelException(e); |
| 59 | } |
| 60 | } |
| 61 | static void d() throws LowLevelException { |
| 62 | e(); |
| 63 | } |
| 64 | static void e() throws LowLevelException { |
| 65 | throw new LowLevelException(); |
| 66 | } |
| 67 | |
| 68 | private static final String OUR_CLASS = ChainedExceptions.class.getName(); |
| 69 | private static final String OUR_FILE_NAME = "ChainedExceptions.java"; |
| 70 | |
| 71 | private static void check(StackTraceElement e, String methodName, int n) { |
| 72 | if (!e.getClassName().equals(OUR_CLASS)) |
| 73 | throw new RuntimeException("Class: " + e); |
| 74 | if (!e.getMethodName().equals(methodName)) |
| 75 | throw new RuntimeException("Method name: " + e); |
| 76 | if (!e.getFileName().equals(OUR_FILE_NAME)) |
| 77 | throw new RuntimeException("File name: " + e); |
| 78 | if (e.getLineNumber() != n) |
| 79 | throw new RuntimeException("Line number: " + e); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | class HighLevelException extends Exception { |
| 84 | HighLevelException(Throwable cause) { super(cause); } |
| 85 | } |
| 86 | |
| 87 | class MidLevelException extends Exception { |
| 88 | MidLevelException(Throwable cause) { super(cause); } |
| 89 | } |
| 90 | |
| 91 | class LowLevelException extends Exception { |
| 92 | } |