/*
 * Copyright (c) 2017, 2021, Oracle and/or its affiliates.
 * Copyright (c) 2013, Regents of the University of California
 *
 * All rights reserved.
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 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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package com.oracle.graal.python.test.grammar;

import static com.oracle.graal.python.test.PythonTests.*;

import org.junit.*;

public class WhileTests {

    @Test
    public void test0() {
        String source = "a = 1\n" + //
                        "while a:\n" + //
                        "  print(a)\n" + //
                        "  a = a - 1\n";
        assertPrints("1\n", source);
    }

    @Test
    public void test1() {
        String source = "a = 0\n" + //
                        "b = 5\n" + //
                        "while a < b:\n" + //
                        "  print(a, \" < \", b)\n" + //
                        "  b = b - 1\n";
        assertPrints("0  <  5\n0  <  4\n0  <  3\n0  <  2\n0  <  1\n", source);
    }

    @Test
    public void test2() {
        String source = "a = 1\n" + //
                        "while not a:\n" + //
                        "  print(a)\n" + //
                        "  a = a - 1\n";
        assertPrints("", source);
    }

    @Test
    public void test3() {
        String source = "a = 1\n" + //
                        "b = 5\n" + //
                        "while not a > b:\n" + //
                        "  print(a, \" > \", b)\n" + //
                        "  b = b - 1\n";
        assertPrints("1  >  5\n1  >  4\n1  >  3\n1  >  2\n1  >  1\n", source);
    }

}
