SnapshotArrays.java

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package com.rox.cartridge;
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/** Copy helpers shared by the mappers' {@code snapshot()}/{@code restore()} - see {@link MapperSnapshot}. */
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final class SnapshotArrays {
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    private static final int[] NONE = new int[0];
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    private SnapshotArrays(){
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    }
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    /** A copy of {@code array}, or an empty array for a board that doesn't have one (e.g. CHR-RAM on a CHR-ROM board). */
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    static int[] copyOf(final int[] array){
12 2 1. copyOf : negated conditional → KILLED
2. copyOf : replaced return value with null for com/rox/cartridge/SnapshotArrays::copyOf → KILLED
 
        return array == null ? NONE.clone() : array.clone();
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    }
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    /**
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     * Checks {@code from} could be copied into {@code into} ({@code null} meaning "this board has none",
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     * matched by an empty {@code from}) - without copying, so a whole snapshot can be checked before
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     * any of it is applied.
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     *
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     * @throws IllegalArgumentException if the sizes don't match, i.e. the snapshot is from a different board
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     */
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    static void requireSameSize(final int[] from, final int[] into, final String what){
23 1 1. requireSameSize : negated conditional → KILLED
 
        final int expected = into == null ? 0 : into.length;
24 1 1. requireSameSize : negated conditional → KILLED
 
        if (from.length != expected){
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            throw new IllegalArgumentException("Expected " + expected + " bytes of " + what + ", got " + from.length);
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        }
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    }
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    /** Copies {@code from} into {@code into}, once {@link #requireSameSize} has passed; nothing to copy if {@code into} is {@code null}. */
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    static void copy(final int[] from, final int[] into){
31 1 1. copy : negated conditional → KILLED
 
        if (into != null){
32 1 1. copy : removed call to java/lang/System::arraycopy → KILLED
 
            System.arraycopy(from, 0, into, 0, from.length);
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        }
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    }
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    static <T extends MapperSnapshot> T expect(final MapperSnapshot snapshot, final Class<T> type){
37 1 1. expect : negated conditional → KILLED
 
        if (!type.isInstance(snapshot)){
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            throw new IllegalArgumentException("Can't restore a " + snapshot.getClass().getSimpleName() + " into a " + type.getSimpleName() + "'s mapper");
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        }
40 1 1. expect : replaced return value with null for com/rox/cartridge/SnapshotArrays::expect → KILLED
 
        return type.cast(snapshot);
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    }
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}

Mutations

12

1.1
Location : copyOf
Killed by : com.rox.cartridge.ChrMemoryTest.[engine:junit-jupiter]/[class:com.rox.cartridge.ChrMemoryTest]/[method:chrRamSnapshotsAreCopiesThatRestore()] negated conditional → KILLED

2.2
Location : copyOf
Killed by : com.rox.cartridge.ChrMemoryTest.[engine:junit-jupiter]/[class:com.rox.cartridge.ChrMemoryTest]/[method:chrRamSnapshotsAreCopiesThatRestore()] replaced return value with null for com/rox/cartridge/SnapshotArrays::copyOf → KILLED

23

1.1
Location : requireSameSize
Killed by : com.rox.cartridge.ChrMemoryTest.[engine:junit-jupiter]/[class:com.rox.cartridge.ChrMemoryTest]/[method:chrRamSnapshotsAreCopiesThatRestore()] negated conditional → KILLED

24

1.1
Location : requireSameSize
Killed by : com.rox.cartridge.ChrMemoryTest.[engine:junit-jupiter]/[class:com.rox.cartridge.ChrMemoryTest]/[method:chrRamSnapshotsAreCopiesThatRestore()] negated conditional → KILLED

31

1.1
Location : copy
Killed by : com.rox.cartridge.ChrMemoryTest.[engine:junit-jupiter]/[class:com.rox.cartridge.ChrMemoryTest]/[method:chrRamSnapshotsAreCopiesThatRestore()] negated conditional → KILLED

32

1.1
Location : copy
Killed by : com.rox.cartridge.ChrMemoryTest.[engine:junit-jupiter]/[class:com.rox.cartridge.ChrMemoryTest]/[method:chrRamSnapshotsAreCopiesThatRestore()] removed call to java/lang/System::arraycopy → KILLED

37

1.1
Location : expect
Killed by : com.rox.cartridge.MapperSnapshotTest.[engine:junit-jupiter]/[class:com.rox.cartridge.MapperSnapshotTest]/[method:restoreCopiesRatherThanKeepingTheSnapshotsArrays()] negated conditional → KILLED

40

1.1
Location : expect
Killed by : com.rox.cartridge.MapperSnapshotTest.[engine:junit-jupiter]/[class:com.rox.cartridge.MapperSnapshotTest]/[method:restoreRejectsTheWrongPrgRamSize()] replaced return value with null for com/rox/cartridge/SnapshotArrays::expect → KILLED

Active mutators

Tests examined


Report generated by PIT 1.22.1