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/*
* Copyright (c) 2009-2020, Peter Abeles. All Rights Reserved.
*
* This file is part of Efficient Java Matrix Library (EJML).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.ejml.equation;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
/**
* @author Peter Abeles
*/
public class TestIntegerSequence {
@Test
public void explicit() {
TokenList.Token a = new TokenList.Token(new VariableInteger(4));
TokenList.Token b = new TokenList.Token(new VariableInteger(6));
TokenList.Token c = new TokenList.Token(new VariableInteger(-3));
a.next = a;
compare(new IntegerSequence.Explicit(a), 4);
a.next = b;
compare(new IntegerSequence.Explicit(a,b), 4, 6);
b.next = c;
compare(new IntegerSequence.Explicit(a,c), 4, 6 , -3);
}
@Test
public void checkFor_two() {
TokenList.Token a = new TokenList.Token(new VariableInteger(4));
TokenList.Token b = new TokenList.Token(new VariableInteger(7));
compare(new IntegerSequence.For(a,null,b), 4,5,6,7);
}
@Test
public void checkFor_three() {
TokenList.Token a = new TokenList.Token(new VariableInteger(4));
TokenList.Token b = new TokenList.Token(new VariableInteger(2));
TokenList.Token c = new TokenList.Token(new VariableInteger(12));
compare(new IntegerSequence.For(a,b,c), 4,6,8,10,12);
}
@Test
public void range_zero() {
compare(new IntegerSequence.Range(null,null), 0,1,2,3,4,5,6,7,8,9,10);
}
@Test
public void range_one() {
TokenList.Token a = new TokenList.Token(new VariableInteger(4));
compare(new IntegerSequence.Range(a,null), 4,5,6,7,8,9,10);
}
@Test
public void range_two() {
TokenList.Token a = new TokenList.Token(new VariableInteger(4));
TokenList.Token b = new TokenList.Token(new VariableInteger(2));
compare(new IntegerSequence.Range(a,b), 4,6,8,10);
}
@Test
public void combined() {
TokenList.Token a = new TokenList.Token(new VariableInteger(4));
TokenList.Token b = new TokenList.Token(new VariableInteger(7));
VariableIntegerSequence varA = new VariableIntegerSequence(new IntegerSequence.For(a,null,b));
VariableScalar varB = new VariableInteger(7);
TokenList.Token tokenA = new TokenList.Token(varA);
TokenList.Token tokenB = new TokenList.Token(varB);
tokenA.next = tokenB;
compare(new IntegerSequence.Combined(tokenA,tokenB), 4, 5, 6, 7,7);
}
private void compare( IntegerSequence sequence , int ...expected ) {
sequence.initialize(10);
for (int i = 0; i < expected.length; i++) {
assertTrue(sequence.hasNext());
assertEquals( expected[i], sequence.next() );
}
assertFalse(sequence.hasNext());
}
}
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