TestBasicHeaderIterator.java
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package org.apache.hc.core5.http.message;
import java.util.Iterator;
import java.util.NoSuchElementException;
import org.apache.hc.core5.http.Header;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
/**
* Tests for {@link Iterator} of {@link org.apache.hc.core5.http.Header}s.
*
*/
class TestBasicHeaderIterator {
@Test
void testAllSame() {
final Header[] headers = new Header[]{
new BasicHeader("Name", "value0"),
new BasicHeader("nAme", "value1, value1.1"),
new BasicHeader("naMe", "value2=whatever"),
new BasicHeader("namE", "value3;tag=nil"),
};
// without filter
Iterator<Header> hit = new BasicHeaderIterator(headers, null);
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[0], hit.next(), "0");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[1], hit.next(), "1");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[2], hit.next(), "2");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[3], hit.next(), "3");
Assertions.assertFalse(hit.hasNext());
// with filter
hit = new BasicHeaderIterator(headers, "name");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[0], hit.next(), "0");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[1], hit.next(), "1");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[2], hit.next(), "2");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[3], hit.next(), "3");
Assertions.assertFalse(hit.hasNext());
}
@Test
void testFirstLastOneNone() {
final Header[] headers = new Header[]{
new BasicHeader("match", "value0"),
new BasicHeader("mismatch", "value1, value1.1"),
new BasicHeader("single", "value2=whatever"),
new BasicHeader("match", "value3;tag=nil"),
};
// without filter
Iterator<Header> hit = new BasicHeaderIterator(headers, null);
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[0], hit.next(), "0");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[1], hit.next(), "1");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[2], hit.next(), "2");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[3], hit.next(), "3");
Assertions.assertFalse(hit.hasNext());
// with filter, first & last
hit = new BasicHeaderIterator(headers, "match");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[0], hit.next());
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[3], hit.next());
Assertions.assertFalse(hit.hasNext());
// with filter, one match
hit = new BasicHeaderIterator(headers, "single");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[2], hit.next());
Assertions.assertFalse(hit.hasNext());
// with filter, no match
hit = new BasicHeaderIterator(headers, "way-off");
Assertions.assertFalse(hit.hasNext());
}
@Test
void testInterspersed() {
final Header[] headers = new Header[]{
new BasicHeader("yellow", "00"),
new BasicHeader("maroon", "01"),
new BasicHeader("orange", "02"),
new BasicHeader("orange", "03"),
new BasicHeader("orange", "04"),
new BasicHeader("yellow", "05"),
new BasicHeader("maroon", "06"),
new BasicHeader("maroon", "07"),
new BasicHeader("maroon", "08"),
new BasicHeader("yellow", "09"),
new BasicHeader("maroon", "0a"),
new BasicHeader("yellow", "0b"),
new BasicHeader("orange", "0c"),
new BasicHeader("yellow", "0d"),
new BasicHeader("orange", "0e"),
};
// without filter
Iterator<Header> hit = new BasicHeaderIterator(headers, null);
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[0], hit.next(), "0");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[1], hit.next(), "1");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[2], hit.next(), "2");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[3], hit.next(), "3");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[4], hit.next(), "4");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[5], hit.next(), "5");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[6], hit.next(), "6");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[7], hit.next(), "7");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[8], hit.next(), "8");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[9], hit.next(), "9");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[10], hit.next(), "a");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[11], hit.next(), "b");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[12], hit.next(), "c");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[13], hit.next(), "d");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[14], hit.next(), "e");
Assertions.assertFalse(hit.hasNext());
// yellow 0, 5, 9, 11, 13
hit = new BasicHeaderIterator(headers, "Yellow");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[0], hit.next());
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[5], hit.next(), "5");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[9], hit.next(), "9");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[11], hit.next(), "b");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[13], hit.next(), "d");
Assertions.assertFalse(hit.hasNext());
// maroon 1, 6, 7, 8, 10
hit = new BasicHeaderIterator(headers, "marOOn");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[1], hit.next(),"1");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[6], hit.next(),"6");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[7], hit.next(), "7");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[8], hit.next(), "8");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[10], hit.next(), "a");
Assertions.assertFalse(hit.hasNext());
// orange 2, 3, 4, 12, 14
hit = new BasicHeaderIterator(headers, "OranGe");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[2], hit.next());
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[3], hit.next());
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[4], hit.next(), "4");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[12], hit.next(), "b");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[14], hit.next(), "e");
Assertions.assertFalse(hit.hasNext());
}
@Test
void testInvalid() {
Assertions.assertThrows(NullPointerException.class, () -> new BasicHeaderIterator(null, "whatever"));
// this is not invalid
final Iterator<Header> hit = new BasicHeaderIterator(new Header[0], "whatever");
Assertions.assertFalse(hit.hasNext());
// but this is
Assertions.assertThrows(NoSuchElementException.class, () -> hit.next());
}
@Test
void testRemaining() {
// to satisfy Clover and take coverage to 100%
final Header[] headers = new Header[]{
new BasicHeader("Name", "value0"),
new BasicHeader("nAme", "value1, value1.1"),
new BasicHeader("naMe", "value2=whatever"),
new BasicHeader("namE", "value3;tag=nil"),
};
// without filter, using plain next()
final Iterator<Header> hit = new BasicHeaderIterator(headers, null);
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[0], hit.next(), "0");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[1], hit.next(), "1");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[2], hit.next(), "2");
Assertions.assertTrue(hit.hasNext());
Assertions.assertEquals(headers[3], hit.next(), "3");
Assertions.assertFalse(hit.hasNext());
final Iterator<Header> hit2 = new BasicHeaderIterator(headers, null);
Assertions.assertTrue(hit2.hasNext());
Assertions.assertThrows(UnsupportedOperationException.class, () -> hit2.remove());
}
}