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78 lines
2.0 KiB
Java
78 lines
2.0 KiB
Java
// Check that stack trace's work, and stack trace line numbers, if available,
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// are correct.
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public class StackTrace2
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{
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public static void main(String[] args)
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{
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try
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{
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new StackTrace2().a();
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}
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catch (Exception x)
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{
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StackTraceElement[] trace = x.getStackTrace();
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checkTrace(trace);
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}
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}
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void a()
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{
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new Inner().foo();
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}
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class Inner
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{
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public void foo()
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{
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doCrash(null);
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}
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public void doCrash(Object o)
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{
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o.toString();
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}
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}
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static void checkTrace(StackTraceElement[] trace)
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{
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System.out.println("Trace length = " + trace.length);
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checkLine(trace[0], "StackTrace2$Inner", "doCrash", 33);
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checkLine(trace[1], "StackTrace2$Inner", "foo", 28);
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checkLine(trace[2], "StackTrace2", "a", 21);
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checkLine(trace[3], "StackTrace2", "main", 10);
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}
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static void checkLine(StackTraceElement frame, String expected_cl,
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String expected_method, int expected_line)
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{
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if (frame.getClassName().equals(expected_cl))
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System.out.print(expected_cl);
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else
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System.out.print("FAIL - expected " + expected_cl + ", got: " +
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frame.getClassName());
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System.out.print(".");
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if (frame.getMethodName().equals(expected_method))
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System.out.print(expected_method);
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else
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System.out.print("FAIL - expected " + expected_method + ", got: " +
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frame.getMethodName());
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System.out.print(":");
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// Permit either the correct line number or no line number. This is so
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// we don't fail on platforms that don't yet support reading debug info
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// for stack traces, or when no debug info is available.
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if (frame.getLineNumber() < 0
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|| (frame.getLineNumber() == expected_line
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&& frame.getFileName().equals("StackTrace2.java")))
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System.out.println("OK");
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else
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System.out.println("FAIL - expected " + expected_line + ", got: "
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+ frame.getLineNumber() + ", in file "
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+ frame.getFileName());
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}
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}
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