org.apache.regexp

## Class RETest

- java.lang.Object
- - org.apache.regexp.RETest

-     public class RETest
      extends java.lang.Object

  Data driven (and optionally interactive) testing harness to exercise regular expression compiler and matching engine.
  Version:
    $Id: RETest.java 518156 2007-03-14 14:31:26Z vgritsenko $
  Author:
    Jonathan Locke, Jon S. Stevens, Michael McCallum

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `(package private) REDebugCompiler` | `compiler`
    `(package private) int` | `failures`
    `(package private) static java.lang.String` | `NEW_LINE`
    `(package private) static boolean` | `showSuccesses`
    `(package private) int` | `testCount`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `RETest()` Constructor

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `assertEquals(java.lang.String message, int expected, int actual)`
    `void` | `assertEquals(java.lang.String message, java.lang.String expected, java.lang.String actual)`
    `(package private) void` | `die(java.lang.String s)` Exit with a fatal error.
    `(package private) void` | `fail(java.lang.String s)` Fail with an error.
    `(package private) void` | `fail(java.lang.StringBuffer log, java.lang.String s)` Fail with an error.
    `private java.lang.String` | `findNextTest(java.io.BufferedReader br)` Finds next test description in a given script.
    `private boolean` | `getExpectedResult(java.lang.String yesno)` Converts yesno string to boolean.
    `private RETestCase` | `getNextTestCase(java.io.BufferedReader br)` Creates testcase for the next test description in the script file.
    `static void` | `main(java.lang.String[] args)` Main program entrypoint.
    `(package private) void` | `runAutomatedTests(java.lang.String testDocument)` Run automated tests in RETest.txt file (from Perl 4.0 test battery)
    `(package private) void` | `runInteractiveTests(java.lang.String expr)` Compile and test matching against a single expression
    `(package private) void` | `say(java.lang.String s)` Say something to standard out
    `(package private) void` | `showParens(RE r)` Dump parenthesized subexpressions found by a regular expression matcher object
    `static boolean` | `test(java.lang.String[] args)` Testing entrypoint.
    `(package private) void` | `testOther()` Run automated unit test
    `private void` | `testPrecompiledRE()`
    `private void` | `testSplitAndGrep()`
    `private void` | `testSubst()`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### showSuccesses

          static final boolean showSuccesses

      See Also:
        Constant Field Values

    - #### NEW_LINE

          static final java.lang.String NEW_LINE

    - #### compiler

          final REDebugCompiler compiler

    - #### testCount

          int testCount

    - #### failures

          int failures

  - ### Constructor Detail

    - #### RETest

          public RETest()

      Constructor

  - ### Method Detail

    - #### main

          public static void main(java.lang.String[] args)

      Main program entrypoint. If an argument is given, it will be compiled and interactive matching will ensue. If no argument is given, the file RETest.txt will be used as automated testing input.
      Parameters:
        `args` - Command line arguments (optional regular expression)

    - #### test

          public static boolean test(java.lang.String[] args)
                              throws java.lang.Exception

      Testing entrypoint.
      Parameters:
        `args` - Command line arguments
      Throws:
        `java.lang.Exception` - thrown in case of error

    - #### runInteractiveTests

          void runInteractiveTests(java.lang.String expr)

      Compile and test matching against a single expression
      Parameters:
        `expr` - Expression to compile and test

    - #### die

          void die(java.lang.String s)

      Exit with a fatal error.
      Parameters:
        `s` - Last famous words before exiting

    - #### fail

          void fail(java.lang.StringBuffer log,
                  java.lang.String s)

      Fail with an error. Will print a big failure message to System.out.
      Parameters:
        `log` - Output before failure
        `s` - Failure description

    - #### fail

          void fail(java.lang.String s)

      Fail with an error. Will print a big failure message to System.out.
      Parameters:
        `s` - Failure description

    - #### say

          void say(java.lang.String s)

      Say something to standard out
      Parameters:
        `s` - What to say

    - #### showParens

          void showParens(RE r)

      Dump parenthesized subexpressions found by a regular expression matcher object
      Parameters:
        `r` - Matcher object with results to show

    - #### runAutomatedTests

          void runAutomatedTests(java.lang.String testDocument)
                           throws java.lang.Exception

      Run automated tests in RETest.txt file (from Perl 4.0 test battery)
      Throws:
        `java.lang.Exception` - thrown in case of error

    - #### testOther

          void testOther()
                   throws java.lang.Exception

      Run automated unit test
      Throws:
        `java.lang.Exception` - thrown in case of error

    - #### testPrecompiledRE

          private void testPrecompiledRE()

    - #### testSplitAndGrep

          private void testSplitAndGrep()

    - #### testSubst

          private void testSubst()

    - #### assertEquals

          public void assertEquals(java.lang.String message,
                          java.lang.String expected,
                          java.lang.String actual)

    - #### assertEquals

          public void assertEquals(java.lang.String message,
                          int expected,
                          int actual)

    - #### getExpectedResult

          private boolean getExpectedResult(java.lang.String yesno)

      Converts yesno string to boolean.
      Parameters:
        `yesno` - string representation of expected result
      Returns:
        true if yesno is "YES", false if yesno is "NO" stops program otherwise.

    - #### findNextTest

          private java.lang.String findNextTest(java.io.BufferedReader br)
                                         throws java.io.IOException

      Finds next test description in a given script.
      Parameters:
        `br` - `BufferedReader` for a script file
      Returns:
        strign tag for next test description
      Throws:
        `java.io.IOException` - if some io problems occured

    - #### getNextTestCase

          private RETestCase getNextTestCase(java.io.BufferedReader br)
                                      throws java.io.IOException

      Creates testcase for the next test description in the script file.
      Parameters:
        `br` - `BufferedReader` for script file.
      Returns:
        a new tescase or null.
      Throws:
        `java.io.IOException` - if some io problems occured

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