ByteUtils.java

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package pro.verron.officestamper.utils;
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import pro.verron.officestamper.api.OfficeStamperException;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.text.StringCharacterIterator;
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import java.util.Base64;
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import java.util.Locale;
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/**
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 * Utility class providing common operations for byte manipulation and conversions.
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 * This class is not intended to be instantiated.
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 */
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public class ByteUtils {
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    private ByteUtils() {
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        throw new OfficeStamperException("Utility class shouldn't be instantiated");
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    }
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    /// Computes the SHA-1 hash of the given input bytes and encodes the result in Base64.
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    ///
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    /// @param bytes the input byte array to be hashed.
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    ///
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    /// @return the SHA-1 hash of the input bytes, encoded in Base64.
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    public static String sha1b64(byte[] bytes) {
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        var messageDigest = findDigest();
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        var encoder = Base64.getEncoder();
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        var digest = messageDigest.digest(bytes);
30 1 1. sha1b64 : replaced return value with "" for pro/verron/officestamper/utils/ByteUtils::sha1b64 → KILLED
 
        return encoder.encodeToString(digest);
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    }
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    private static MessageDigest findDigest() {
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        try {
35 1 1. findDigest : replaced return value with null for pro/verron/officestamper/utils/ByteUtils::findDigest → KILLED
 
            return MessageDigest.getInstance("SHA-1");
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        } catch (NoSuchAlgorithmException e) {
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            throw new OfficeStamperException(e);
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        }
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    }
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    /**
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     * Converts the size of a byte array into a human-readable string representation
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     * using standard size prefixes (e.g., KB, MB, GB).
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     *
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     * @param imageBytes the input byte array whose size needs to be converted
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     * @return a human-readable string representing the size of the byte array
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     *         in appropriate units (e.g., "1.2KB", "3.4MB")
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     */
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    public static String readableSize(byte[] imageBytes) {
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        double size = imageBytes.length;
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        var prefixes = new StringCharacterIterator(" kMGTPE");
52 2 1. readableSize : changed conditional boundary → SURVIVED
2. readableSize : negated conditional → KILLED
 
        while (size >= 1_000) {
53 1 1. readableSize : Replaced double division with multiplication → TIMED_OUT
 
            size /= 1_000;
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            prefixes.next();
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        }
56 1 1. readableSize : replaced return value with "" for pro/verron/officestamper/utils/ByteUtils::readableSize → KILLED
 
        return String.format(Locale.ROOT, "%.1f%cB", size, prefixes.current());
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    }
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}

Mutations

30

1.1
Location : sha1b64
Killed by : pro.verron.officestamper.test.DefaultTests.[engine:junit-jupiter]/[class:pro.verron.officestamper.test.DefaultTests]/[test-template:features(java.lang.String, pro.verron.officestamper.api.OfficeStamperConfiguration, java.lang.Object, java.io.InputStream, java.lang.String)]/[test-template-invocation:#12] replaced return value with "" for pro/verron/officestamper/utils/ByteUtils::sha1b64 → KILLED

35

1.1
Location : findDigest
Killed by : pro.verron.officestamper.test.DefaultTests.[engine:junit-jupiter]/[class:pro.verron.officestamper.test.DefaultTests]/[test-template:features(java.lang.String, pro.verron.officestamper.api.OfficeStamperConfiguration, java.lang.Object, java.io.InputStream, java.lang.String)]/[test-template-invocation:#12] replaced return value with null for pro/verron/officestamper/utils/ByteUtils::findDigest → KILLED

52

1.1
Location : readableSize
Killed by : pro.verron.officestamper.test.DefaultTests.[engine:junit-jupiter]/[class:pro.verron.officestamper.test.DefaultTests]/[test-template:features(java.lang.String, pro.verron.officestamper.api.OfficeStamperConfiguration, java.lang.Object, java.io.InputStream, java.lang.String)]/[test-template-invocation:#12] negated conditional → KILLED

2.2
Location : readableSize
Killed by : none changed conditional boundary → SURVIVED Covering tests

53

1.1
Location : readableSize
Killed by : none Replaced double division with multiplication → TIMED_OUT

56

1.1
Location : readableSize
Killed by : pro.verron.officestamper.test.DefaultTests.[engine:junit-jupiter]/[class:pro.verron.officestamper.test.DefaultTests]/[test-template:features(java.lang.String, pro.verron.officestamper.api.OfficeStamperConfiguration, java.lang.Object, java.io.InputStream, java.lang.String)]/[test-template-invocation:#12] replaced return value with "" for pro/verron/officestamper/utils/ByteUtils::readableSize → KILLED

Active mutators

Tests examined


Report generated by PIT 1.20.0