ngb/zeichenmaschine
1
0
Fork 0
mirror of https://github.com/jneug/zeichenmaschine.git synced 2026-10-12 09:56:33 +02:00
Code Issues Packages Projects Releases 1 Wiki Activity

Neue choice() Methoden

Browse Source
This commit is contained in:
ngb
2022-07-27 13:55:11 +02:00
parent 687d7d35b7
commit 03d37222bf
2 changed files with 171 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
src/test/java/schule/ngb/zm/ConstantsTest.java
View File

@@ -2,6 +2,9 @@ package schule.ngb.zm;
import org.junit.jupiter.api.Test;
import java.util.Arrays;
import java.util.stream.IntStream;
import static org.junit.jupiter.api.Assertions.*;
class ConstantsTest {
@@ -169,4 +172,30 @@ class ConstantsTest {
assertTrue(0.0 <= d && 1.0 >= d, "Noise should be in Range 0 to 1. Was <" + d + ">.");
}
@Test
void choice() {
int[] values = IntStream.range(0,1000).toArray();
int[] choosen = Constants.choice(values, 1, false);
assertEquals(1, choosen.length);
assertTrue(Arrays.stream(values).anyMatch((i) -> i == choosen[0]));
int[] choosen4 = Constants.choice(values, 2000, false);
assertEquals(2000, choosen4.length);
int[] choosen2 = Constants.choice(values, 400, false);
assertEquals(400, choosen2.length);
assertTrue(Arrays.stream(choosen2).allMatch((i) -> Arrays.binarySearch(values, i)>=0 ));
int[] choosen3 = Constants.choice(values, 999, true);
assertEquals(999, choosen3.length);
assertTrue(Arrays.stream(choosen3).allMatch((i) -> Arrays.binarySearch(values, i)>=0 ));
for( int i = 0; i < choosen3.length; i++ ) {
for( int j = i+1; j < choosen3.length; j++ ) {
assertNotEquals(choosen3[i], choosen3[j], "Item "+i+" also found at index "+j);
}
}
assertThrows(IllegalArgumentException.class, () -> Constants.choice(values, 2000, true));
}
}