path: root/src/engine/SCons/Tool/JavaCommonTests.py

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__revision__ = "src/engine/SCons/Tool/JavaCommonTests.py  2013/03/03 09:48:35 garyo"

import os.path
import sys
import unittest

import SCons.Tool.JavaCommon


# Adding trace=trace to any of the parse_jave() calls below will cause
# the parser to spit out trace messages of the tokens it sees and the
# attendant transitions.

def trace(token, newstate):
    from SCons.Debug import Trace
    statename = newstate.__class__.__name__
    Trace('token = %s, state = %s\n' % (repr(token), statename))

class parse_javaTestCase(unittest.TestCase):

    def test_bare_bones(self):
        """Test a bare-bones class"""

        input = """\
package com.sub.bar;

public class Foo
{

     public static void main(String[] args)
     {

        /* This tests a former bug where strings would eat later code. */
        String hello1 = new String("Hello, world!");

     }

}
"""
        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input)
        assert pkg_dir == os.path.join('com', 'sub', 'bar'), pkg_dir
        assert classes == ['Foo'], classes



    def test_dollar_sign(self):
        """Test class names with $ in them"""

        input = """\
public class BadDep { 
  public void new$rand () {}
}
"""
        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input)
        assert pkg_dir is None, pkg_dir
        assert classes == ['BadDep'], classes



    def test_inner_classes(self):
        """Test parsing various forms of inner classes"""

        input = """\
class Empty {
}

interface Listener {
  public void execute();
}

public
class
Test implements Listener {
  class Inner {
    void go() {
      use(new Listener() {
        public void execute() {
          System.out.println("In Inner");
        }
      });
    }
    String s1 = "class A";
    String s2 = "new Listener() { }";
    /* class B */
    /* new Listener() { } */
  }

  class Inner2 {
     Inner2() { Listener l = new Listener(); }
  }

  /* Make sure this class doesn't get interpreted as an inner class of the previous one, when "new" is used in the previous class. */
  class Inner3 {

  }

  public static void main(String[] args) {
    new Test().run();
  }

  void run() {
    use(new Listener() {
      public void execute() {
        use(new Listener( ) {
          public void execute() {
            System.out.println("Inside execute()");
          }
        });
      }
    });

    new Inner().go();
  }

  void use(Listener l) {
    l.execute();
  }
}

class Private {
  void run() {
    new Listener() {
      public void execute() {
      }
    };
  }
}
"""

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '1.4')
        assert pkg_dir is None, pkg_dir
        expect = [
                   'Empty',
                   'Listener',
                   'Test$1',
                   'Test$Inner',
                   'Test$Inner2',
                   'Test$Inner3',
                   'Test$2',
                   'Test$3',
                   'Test',
                   'Private$1',
                   'Private',
                 ]
        assert classes == expect, classes

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '1.5')
        assert pkg_dir is None, pkg_dir
        expect = [
                   'Empty',
                   'Listener',
                   'Test$Inner$1',
                   'Test$Inner',
                   'Test$Inner2',
                   'Test$Inner3',
                   'Test$1',
                   'Test$1$1',
                   'Test',
                   'Private$1',
                   'Private',
                 ]
        assert classes == expect, (expect, classes)

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '5')
        assert pkg_dir is None, pkg_dir
        expect = [
                   'Empty',
                   'Listener',
                   'Test$Inner$1',
                   'Test$Inner',
                   'Test$Inner2',
                   'Test$Inner3',
                   'Test$1',
                   'Test$1$1',
                   'Test',
                   'Private$1',
                   'Private',
                 ]
        assert classes == expect, (expect, classes)



    def test_comments(self):
        """Test a class with comments"""

        input = """\
package com.sub.foo;

import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.RMISecurityManager;
import java.rmi.server.UnicastRemoteObject;

public class Example1 extends UnicastRemoteObject implements Hello {

    public Example1() throws RemoteException {
        super();
    }

    public String sayHello() {
        return "Hello World!";
    }

    public static void main(String args[]) {
        if (System.getSecurityManager() == null) {
            System.setSecurityManager(new RMISecurityManager());
        }
        // a comment
        try {
            Example1 obj = new Example1();

            Naming.rebind("//myhost/HelloServer", obj);

            System.out.println("HelloServer bound in registry");
        } catch (Exception e) {
            System.out.println("Example1 err: " + e.getMessage());
            e.printStackTrace();
        }
    }
}
"""

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input)
        assert pkg_dir == os.path.join('com', 'sub', 'foo'), pkg_dir
        assert classes == ['Example1'], classes


    def test_arrays(self):
        """Test arrays of class instances"""

        input = """\
public class Test {
    MyClass abc = new MyClass();
    MyClass xyz = new MyClass();
    MyClass _array[] = new MyClass[] {
        abc,
        xyz
    }
}
"""

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input)
        assert pkg_dir is None, pkg_dir
        assert classes == ['Test'], classes



    def test_backslash(self):
        """Test backslash handling"""

        input = """\
public class MyTabs
{
        private class MyInternal
        {
        }
        private final static String PATH = "images\\\\";
}
"""

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input)
        assert pkg_dir is None, pkg_dir
        assert classes == ['MyTabs$MyInternal', 'MyTabs'], classes


    def test_enum(self):
        """Test the Java 1.5 enum keyword"""

        input = """\
package p;
public enum a {}
"""

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input)
        assert pkg_dir == 'p', pkg_dir
        assert classes == ['a'], classes


    def test_anon_classes(self):
        """Test anonymous classes"""

        input = """\
public abstract class TestClass
{
    public void completed()
    {
        new Thread()
        {
        }.start();

        new Thread()
        {
        }.start();
    }
}
"""

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input)
        assert pkg_dir is None, pkg_dir
        assert classes == ['TestClass$1', 'TestClass$2', 'TestClass'], classes


    def test_closing_bracket(self):
        """Test finding a closing bracket instead of an anonymous class"""

        input = """\
class TestSCons {
    public static void main(String[] args) {
        Foo[] fooArray = new Foo[] { new Foo() };
    }
}

class Foo { }
"""

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input)
        assert pkg_dir is None, pkg_dir
        assert classes == ['TestSCons', 'Foo'], classes


    def test_dot_class_attributes(self):
        """Test handling ".class" attributes"""

        input = """\
public class Test extends Object
{
    static {
        Class c = Object[].class;
        Object[] s = new Object[] {};
    }
}
"""

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input)
        assert classes == ['Test'], classes

        input = """\
public class A {
    public class B {
        public void F(Object[] o) {
            F(new Object[] {Object[].class});
        }
        public void G(Object[] o) {
            F(new Object[] {});
        }
    }
}
"""

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input)
        assert pkg_dir is None, pkg_dir
        assert classes == ['A$B', 'A'], classes

    def test_anonymous_classes_with_parentheses(self):
        """Test finding anonymous classes marked by parentheses"""

        input = """\
import java.io.File;

public class Foo {
    public static void main(String[] args) {
        File f = new File(
            new File("a") {
                public String toString() {
                    return "b";
                }
            } to String()
        ) {
            public String toString() {
                return "c";
            }
        };
    }
}
"""

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '1.4')
        assert classes == ['Foo$1', 'Foo$2', 'Foo'], classes

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '1.5')
        assert classes == ['Foo$1', 'Foo$1$1', 'Foo'], classes

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '6')
        assert classes == ['Foo$1', 'Foo$1$1', 'Foo'], classes



    def test_nested_anonymous_inner_classes(self):
        """Test finding nested anonymous inner classes"""

        input = """\
// import java.util.*;

public class NestedExample
{
        public NestedExample()
        {
                Thread t = new Thread() {
                        public void start()
                        {
                                Thread t = new Thread() {
                                        public void start()
                                        {
                                                try {Thread.sleep(200);}
                                                catch (Exception e) {}
                                        }
                                };
                                while (true)
                                {
                                        try {Thread.sleep(200);}
                                        catch (Exception e) {}
                                }
                        }
                };
        }


        public static void main(String argv[])
        {
                NestedExample e = new NestedExample();
        }
}
"""

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '1.4')
        expect = [ 'NestedExample$1', 'NestedExample$2', 'NestedExample' ]
        assert expect == classes, (expect, classes)

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '1.5')
        expect = [ 'NestedExample$1', 'NestedExample$1$1', 'NestedExample' ]
        assert expect == classes, (expect, classes)

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '6')
        expect = [ 'NestedExample$1', 'NestedExample$1$1', 'NestedExample' ]
        assert expect == classes, (expect, classes)

    def test_private_inner_class_instantiation(self):
        """Test anonymous inner class generated by private instantiation"""

        input = """\
class test
{
    test()
    {
        super();
        new inner();
    }

    static class inner
    {
        private inner() {}
    }
}
"""

        # This is what we *should* generate, apparently due to the
        # private instantiation of the inner class, but don't today.
        #expect = [ 'test$1', 'test$inner', 'test' ]

        # What our parser currently generates, which doesn't match
        # what the Java compiler actually generates.
        expect = [ 'test$inner', 'test' ]

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '1.4')
        assert expect == classes, (expect, classes)

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '1.5')
        assert expect == classes, (expect, classes)

    def test_floating_point_numbers(self):
        """Test floating-point numbers in the input stream"""
        input = """
// Broken.java
class Broken
{
  /**
   * Detected.
   */
  Object anonymousInnerOK = new Runnable() { public void run () {} };

  /**
   * Detected.
   */
  class InnerOK { InnerOK () { } }
  
  {
    System.out.println("a number: " + 1000.0 + "");
  }

  /**
   * Not detected.
   */
  Object anonymousInnerBAD = new Runnable() { public void run () {} };

  /**
   * Not detected.
   */
  class InnerBAD { InnerBAD () { } }
}
"""

        expect = ['Broken$1', 'Broken$InnerOK', 'Broken$2', 'Broken$InnerBAD', 'Broken']

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '1.4')
        assert expect == classes, (expect, classes)

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '1.5')
        assert expect == classes, (expect, classes)


    def test_genercis(self):
        """Test that generics don't interfere with detecting anonymous classes"""

        input = """\
import java.util.Date;
import java.util.Comparator;

public class Foo
{
  public void foo()
  {
    Comparator<Date> comp = new Comparator<Date>()
      {
        static final long serialVersionUID = 1L;
        public int compare(Date lhs, Date rhs)
        {
          return 0;
        }
      };
  }
}
"""

        expect = [ 'Foo$1', 'Foo' ]

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '1.6')
        assert expect == classes, (expect, classes)

        pkg_dir, classes = SCons.Tool.JavaCommon.parse_java(input, '6')
        assert expect == classes, (expect, classes)



if __name__ == "__main__":
    suite = unittest.TestSuite()
    tclasses = [ parse_javaTestCase ]
    for tclass in tclasses:
        names = unittest.getTestCaseNames(tclass, 'test_')
        suite.addTests(list(map(tclass, names)))
    if not unittest.TextTestRunner().run(suite).wasSuccessful():
        sys.exit(1)

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