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/*
* (c) Copyright 2007, 2008, 2009 Hewlett-Packard Development Company, LP
* All rights reserved.
* [See end of file]
*/
package atlas.io;
import org.junit.Test ;
import atlas.test.BaseTest ;
public abstract class AbstractTestPeekReader extends BaseTest
{
static int INIT_LINE = PeekReader.INIT_LINE ;
static int INIT_COL = PeekReader.INIT_COL ;
abstract PeekReader make(String contents, int size) ;
@Test public void read0()
{
assertEquals("Init line", 1, INIT_LINE) ;
assertEquals("Init col", 1, INIT_COL) ;
}
@Test public void read1()
{
PeekReader r = make("") ;
checkLineCol(r, INIT_LINE, INIT_COL) ;
int x = r.peekChar() ;
assertEquals(-1, x) ;
x = r.readChar() ;
assertEquals(-1, x) ;
x = r.readChar() ;
assertEquals(-1, x) ;
}
@Test public void read2()
{
// Assumes we start at (1,1)
PeekReader r = make("a") ;
checkLineCol(r, INIT_LINE, INIT_COL) ;
int x = r.peekChar() ;
assertEquals('a', x) ;
checkLineCol(r, INIT_LINE, INIT_COL) ;
x = r.readChar() ;
checkLineCol(r, INIT_LINE, INIT_COL+1) ;
assertEquals('a', x) ;
x = r.peekChar() ;
assertEquals(-1, x) ;
x = r.readChar() ;
assertEquals(-1, x) ;
}
@Test public void read3()
{
String c = "abcde" ;
PeekReader r = make(c) ;
for ( int i = 0 ; i < c.length(); i++ )
{
checkLineCol(r, INIT_LINE, i+INIT_COL) ;
long z = r.getPosition() ;
assertEquals(i, r.getPosition()) ;
assertEquals(c.charAt(i), r.readChar()) ;
}
assertTrue(r.eof()) ;
}
@Test public void read4()
{
position("abcde") ;
}
@Test public void read5()
{
position("abc\nde") ;
}
@Test public void read6()
{
position("abc\nde\n") ;
}
@Test public void read7()
{
position("") ;
}
@Test public void read8()
{
position("x") ;
}
@Test public void read9()
{
PeekReader r = make("a\nb\n") ;
checkLineCol(r, INIT_LINE, INIT_COL) ;
int x = r.peekChar() ;
assertEquals('a', x) ;
checkLineCol(r, INIT_LINE, INIT_COL) ;
x = r.readChar() ;
assertEquals('a', x) ;
checkLineCol(r, INIT_LINE, INIT_COL+1) ;
x = r.readChar() ;
assertEquals('\n', x) ;
checkLineCol(r, INIT_LINE+1, INIT_COL) ;
}
@Test public void unread1()
{
PeekReader r = make("abc") ;
assertEquals('a', r.peekChar()) ;
r.pushbackChar('Z') ;
assertEquals('Z', r.peekChar()) ;
contains(r, "Zabc") ;
}
@Test public void unread2()
{
PeekReader r = make("abc") ;
checkLineCol(r, INIT_LINE, INIT_COL) ;
int ch = r.readChar() ;
// Pushback does not move line/col backwards.
checkLineCol(r, INIT_LINE, INIT_COL+1) ;
assertEquals('b', r.peekChar()) ;
checkLineCol(r, INIT_LINE, INIT_COL+1) ;
r.pushbackChar('a') ;
checkLineCol(r, INIT_LINE, INIT_COL+1) ;
contains(r, "abc") ;
}
@Test public void unread3()
{
PeekReader r = make("") ;
int ch = r.readChar() ;
assertEquals(-1, r.peekChar()) ;
r.pushbackChar('a') ;
contains(r, "a") ;
}
@Test public void unread4()
{
PeekReader r = make("") ;
int ch = r.readChar() ;
assertEquals(-1, r.peekChar()) ;
r.pushbackChar('0') ;
r.pushbackChar('1') ;
r.pushbackChar('2') ;
r.pushbackChar('3') ;
contains(r, "3210") ; // Backwards!
}
@Test public void unread5()
{
PeekReader r = make("") ;
long lineNum = r.getLineNum() ;
long colNum = r.getColNum() ;
checkLineCol(r, lineNum, colNum) ;
r.pushbackChar('0') ;
checkLineCol(r, lineNum, colNum) ; // Unmoved.
r.pushbackChar('1') ;
checkLineCol(r, lineNum, colNum) ;
assertEquals('1', r.readChar()) ;
checkLineCol(r, lineNum, colNum) ; // Unmoved.
r.pushbackChar('2') ;
r.pushbackChar('3') ;
checkLineCol(r, lineNum, colNum) ; // Unmoved.
assertEquals('3', r.peekChar()) ;
contains(r, "320") ;
}
private void checkLineCol(PeekReader r, long lineNum, long colNum)
{
assertEquals("Line", lineNum, r.getLineNum()) ;
assertEquals("Column", colNum, r.getColNum()) ;
}
private void position(String contents)
{
PeekReader r = make(contents) ;
int line = INIT_LINE ;
int col = INIT_COL ;
checkLineCol(r, line, col) ;
assertEquals(0, r.getPosition()) ;
for ( int i = 0 ; i < contents.length(); i++ )
{
int x = r.readChar() ;
if ( x != -1 )
{
if ( x == '\n' )
{
line++ ;
col = INIT_COL ;
}
else
col++ ;
}
assertEquals(contents.charAt(i), x) ;
assertEquals(i+1, r.getPosition()) ;
checkLineCol(r, line, col) ;
}
assertTrue(r.eof()) ;
}
private void contains(PeekReader r, String contents)
{
for ( int i = 0 ; i < contents.length(); i++ )
{
int x = r.readChar() ;
assertEquals("\""+contents+"\" -- Index "+i+" Expected:'"+contents.charAt(i)+"' Got: '"+(char)x+"'", contents.charAt(i), x) ;
}
assertTrue(r.eof()) ;
}
private PeekReader make(String contents)
{ return make(contents, 2) ; }
}
/*
* (c) Copyright 2007, 2008, 2009 Hewlett-Packard Development Company, LP
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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