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Fixed random fit test of ImmutableByteSequence

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Change-Id: I22c0279f06dfb0101ee0c871b6c0c5443d3bd4a9
This commit is contained in:
Carmelo Cascone 2017-08-29 21:36:07 +02:00
parent 46d360bb63
commit d047bd2a99
1 changed files with 10 additions and 3 deletions
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13
utils/misc/src/test/java/org/onlab/util/ImmutableByteSequenceTest.java
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@ -26,12 +26,15 @@ import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Random;
import static java.lang.Integer.max;
import static java.lang.String.format;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.is;
public class ImmutableByteSequenceTest {
public static final int MIN_RAND_FIT_VALUE = 0xf;
public static final int MAX_RAND_FIT_VALUE = 0x7fffffff;
@Rule
public ExpectedException thrown = ExpectedException.none();
@ -238,10 +241,14 @@ public class ImmutableByteSequenceTest {
// Test fit against the computed MSB index.
Random random = new Random();
for (int i = 0; i < 1000; i++) {
ImmutableByteSequence bytes = ImmutableByteSequence.copyFrom((long) Math.abs(random.nextInt()));
int randValue = random.nextInt((MAX_RAND_FIT_VALUE - MIN_RAND_FIT_VALUE) + 1) + MIN_RAND_FIT_VALUE;
ImmutableByteSequence bytes = ImmutableByteSequence.copyFrom((long) randValue);
int msbIndex = bytes.msbIndex();
checkIllegalFit(bytes, msbIndex - random.nextInt(16));
checkLegalFit(bytes, msbIndex + 2 + random.nextInt(16));
// Truncate.
checkIllegalFit(bytes, max(msbIndex - random.nextInt(16), 1));
// Expand.
checkLegalFit(bytes, msbIndex + 2 + random.nextInt(128));
// Fit to same bit-width of original value.
checkLegalFit(bytes, msbIndex + 1);
}
}