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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.config.provision;
import org.junit.Test;
import java.util.function.Supplier;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
/**
* @author bratseth
*/
public class NodeResourcesTest {
@Test
public void testToString() {
assertEquals("[vcpu: 1.0, memory: 10.0 Gb, disk 100.0 Gb, architecture: x86_64]",
new NodeResources(1., 10., 100., 0).toString());
assertEquals("[vcpu: 0.3, memory: 3.3 Gb, disk 33.3 Gb, bandwidth: 0.3 Gbps, architecture: x86_64]",
new NodeResources(1/3., 10/3., 100/3., 0.3).toString());
assertEquals("[vcpu: 0.7, memory: 9.0 Gb, disk 66.7 Gb, bandwidth: 0.7 Gbps, architecture: x86_64]",
new NodeResources(2/3., 8.97, 200/3., 0.67).toString());
}
@Test
public void testInvalid() {
assertInvalid("vcpu", () -> new NodeResources(Double.NaN, 1.0, 1.0, 1.0));
assertInvalid("memory", () -> new NodeResources(1.0, Double.NaN, 1.0, 1.0));
assertInvalid("disk", () -> new NodeResources(1.0, 1.0, Double.NaN, 1.0));
assertInvalid("bandwidth", () -> new NodeResources(1.0, 1.0, 1.0, Double.NaN));
}
@Test
public void benchmark() {
NodeResources [] resouces = new NodeResources[100];
for (int i = 0; i < resouces.length; i++) {
resouces[i] = new NodeResources(1/3., 10/3., 100/3., 0.3);
}
int NUM_ITER = 100; // Use at least 100000 for proper benchmarking
long warmup = runTest(resouces, NUM_ITER);
long start = System.nanoTime();
long benchmark = runTest(resouces, NUM_ITER);
long duration = System.nanoTime() - start;
System.out.println("NodeResources.toString() took " + duration/1000000 + " ms");
assertEquals(warmup, benchmark);
}
private void assertInvalid(String valueName, Supplier<NodeResources> nodeResources) {
try {
nodeResources.get();
fail("Expected exception");
}
catch (IllegalArgumentException e) {
assertEquals(valueName + " cannot be NaN", e.getMessage());
}
}
private long runTest(NodeResources [] resouces, int num) {
long sum = 0;
for (int i = 0; i < num; i++) {
for (NodeResources ns :resouces) {
sum += ns.toString().length();
}
}
return sum;
}
}
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