JSONHandler.java

package io.github.some_example_name;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.utils.Array;
import com.badlogic.gdx.utils.Json;

/** <code>JSONHandler</code> handles all JSON input (position, score) ready to read and write from leaderboard.json
 * @see com.badlogic.gdx.utils.Json */
public class JSONHandler {

    private final Json json;
    private final FileHandle file;

    public JSONHandler() {
        json = new Json();
        file = Gdx.files.local("leaderboard.json");
    }

    /** <code>readLeaderboard()</code> reads leaderboard from leaderboard.json */
    public Array<LeaderboardEntry> readLeaderboard() {
        if (!file.exists() || file.length() == 0) {
            return new Array<>();
        }
        return json.fromJson(Array.class, LeaderboardEntry.class, file);
    }

    /**
     * <code>writeLeaderboard(int finalScore)</code> reads leaderboard from an array of leaderboard entries,
     * adds new finalScore as entry to leaderboard.json,
     * sorts the scores into descending order, keeping only the top 5 in the file,
     * updates the following scores positions if finalScore is within top 5,
     * save file containing new entries
     * @param finalScore
     */
    public void writeLeaderboard(String name, int finalScore) {
        Array<LeaderboardEntry> entries = readLeaderboard();
        entries.add(new LeaderboardEntry(0, name, finalScore));
        entries.sort((a, b) -> b.score - a.score); // sort descending

        if (entries.size > 5) { // keep only top 5
            entries.truncate(5);
        }
        for (int i = 0; i < entries.size; i++) { // update following entries
            entries.get(i).position = i + 1;
        }
        file.writeString(json.prettyPrint(entries), false); // save file
    }

    /** <code>readLeaderboardAsStrings()</code> returns leaderboard as strings for drawing */
    public String[] readLeaderboardAsStrings() {
        Array<LeaderboardEntry> entries = readLeaderboard();
        String[] result = new String[5];

        for (int i = 0; i < entries.size; i++) {
            LeaderboardEntry entry = entries.get(i);
            result[i] = entry.position + ") " + entry.name + ": " + entry.score;
        }
        return result;
    }

    /** <code>resetFile()</code> clears leaderboard, for testing purposes only */
    public void resetFile() {
        file.writeString("[]", false);
    }
}















Active mutators

CONDITIONALS_BOUNDARY
EMPTY_RETURNS
FALSE_RETURNS
INCREMENTS
INVERT_NEGS
MATH
NEGATE_CONDITIONALS
NULL_RETURNS
PRIMITIVE_RETURNS
TRUE_RETURNS
VOID_METHOD_CALLS

Tests examined

io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:readLeaderboardWhenFileEmptyReturnsEmptyArray()] (0 ms)
io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardAddsEntry()] (1 ms)
io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:readLeaderboardAsStringsFormatsCorrectly()] (3 ms)
io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardSortsByHighestScoreFirst()] (17 ms)
io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardKeepsOnlyTopFiveEntries()] (19 ms)
io.github.some_example_name.WinToLeaderboardIntegrationTest.[engine:junit-jupiter]/[class:io.github.some_example_name.WinToLeaderboardIntegrationTest]/[method:confirmedWinNameIsWrittenToLeaderboard()] (3 ms)

Report generated by PIT 1.15.0

1		package io.github.some_example_name;
2
3		import com.badlogic.gdx.Gdx;
4		import com.badlogic.gdx.files.FileHandle;
5		import com.badlogic.gdx.utils.Array;
6		import com.badlogic.gdx.utils.Json;
7
8		/** <code>JSONHandler</code> handles all JSON input (position, score) ready to read and write from leaderboard.json
9		* @see com.badlogic.gdx.utils.Json */
10		public class JSONHandler {
11
12		private final Json json;
13		private final FileHandle file;
14
15		public JSONHandler() {
16		json = new Json();
17		file = Gdx.files.local("leaderboard.json");
18		}
19
20		/** <code>readLeaderboard()</code> reads leaderboard from leaderboard.json */
21		public Array<LeaderboardEntry> readLeaderboard() {
22	2 1. readLeaderboard : negated conditional → KILLED 2. readLeaderboard : negated conditional → KILLED	if (!file.exists() \|\| file.length() == 0) {
23	1 1. readLeaderboard : replaced return value with null for io/github/some_example_name/JSONHandler::readLeaderboard → NO_COVERAGE	return new Array<>();
24		}
25	1 1. readLeaderboard : replaced return value with null for io/github/some_example_name/JSONHandler::readLeaderboard → KILLED	return json.fromJson(Array.class, LeaderboardEntry.class, file);
26		}
27
28		/**
29		* <code>writeLeaderboard(int finalScore)</code> reads leaderboard from an array of leaderboard entries,
30		* adds new finalScore as entry to leaderboard.json,
31		* sorts the scores into descending order, keeping only the top 5 in the file,
32		* updates the following scores positions if finalScore is within top 5,
33		* save file containing new entries
34		* @param finalScore
35		*/
36		public void writeLeaderboard(String name, int finalScore) {
37		Array<LeaderboardEntry> entries = readLeaderboard();
38	1 1. writeLeaderboard : removed call to com/badlogic/gdx/utils/Array::add → KILLED	entries.add(new LeaderboardEntry(0, name, finalScore));
39	3 1. lambda$writeLeaderboard$0 : replaced int return with 0 for io/github/some_example_name/JSONHandler::lambda$writeLeaderboard$0 → KILLED 2. writeLeaderboard : removed call to com/badlogic/gdx/utils/Array::sort → KILLED 3. lambda$writeLeaderboard$0 : Replaced integer subtraction with addition → KILLED	entries.sort((a, b) -> b.score - a.score); // sort descending
40
41	2 1. writeLeaderboard : changed conditional boundary → SURVIVED 2. writeLeaderboard : negated conditional → KILLED	if (entries.size > 5) { // keep only top 5
42	1 1. writeLeaderboard : removed call to com/badlogic/gdx/utils/Array::truncate → KILLED	entries.truncate(5);
43		}
44	2 1. writeLeaderboard : negated conditional → KILLED 2. writeLeaderboard : changed conditional boundary → KILLED	for (int i = 0; i < entries.size; i++) { // update following entries
45	1 1. writeLeaderboard : Replaced integer addition with subtraction → KILLED	entries.get(i).position = i + 1;
46		}
47	1 1. writeLeaderboard : removed call to com/badlogic/gdx/files/FileHandle::writeString → KILLED	file.writeString(json.prettyPrint(entries), false); // save file
48		}
49
50		/** <code>readLeaderboardAsStrings()</code> returns leaderboard as strings for drawing */
51		public String[] readLeaderboardAsStrings() {
52		Array<LeaderboardEntry> entries = readLeaderboard();
53		String[] result = new String[5];
54
55	2 1. readLeaderboardAsStrings : negated conditional → KILLED 2. readLeaderboardAsStrings : changed conditional boundary → KILLED	for (int i = 0; i < entries.size; i++) {
56		LeaderboardEntry entry = entries.get(i);
57		result[i] = entry.position + ") " + entry.name + ": " + entry.score;
58		}
59	1 1. readLeaderboardAsStrings : replaced return value with null for io/github/some_example_name/JSONHandler::readLeaderboardAsStrings → KILLED	return result;
60		}
61
62		/** <code>resetFile()</code> clears leaderboard, for testing purposes only */
63		public void resetFile() {
64	1 1. resetFile : removed call to com/badlogic/gdx/files/FileHandle::writeString → KILLED	file.writeString("[]", false);
65		}
66		}
		Mutations
22		1.1 Location : readLeaderboard Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardAddsEntry()] negated conditional → KILLED 2.2 Location : readLeaderboard Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardAddsEntry()] negated conditional → KILLED
23		1.1 Location : readLeaderboard Killed by : none replaced return value with null for io/github/some_example_name/JSONHandler::readLeaderboard → NO_COVERAGE
25		1.1 Location : readLeaderboard Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:readLeaderboardWhenFileEmptyReturnsEmptyArray()] replaced return value with null for io/github/some_example_name/JSONHandler::readLeaderboard → KILLED
38		1.1 Location : writeLeaderboard Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardAddsEntry()] removed call to com/badlogic/gdx/utils/Array::add → KILLED
39		1.1 Location : lambda$writeLeaderboard$0 Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardSortsByHighestScoreFirst()] replaced int return with 0 for io/github/some_example_name/JSONHandler::lambda$writeLeaderboard$0 → KILLED 2.2 Location : writeLeaderboard Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardSortsByHighestScoreFirst()] removed call to com/badlogic/gdx/utils/Array::sort → KILLED 3.3 Location : lambda$writeLeaderboard$0 Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardSortsByHighestScoreFirst()] Replaced integer subtraction with addition → KILLED
41		1.1 Location : writeLeaderboard Killed by : none changed conditional boundary → SURVIVED 2.2 Location : writeLeaderboard Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardKeepsOnlyTopFiveEntries()] negated conditional → KILLED
42		1.1 Location : writeLeaderboard Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardKeepsOnlyTopFiveEntries()] removed call to com/badlogic/gdx/utils/Array::truncate → KILLED
44		1.1 Location : writeLeaderboard Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardAddsEntry()] negated conditional → KILLED 2.2 Location : writeLeaderboard Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardAddsEntry()] changed conditional boundary → KILLED
45		1.1 Location : writeLeaderboard Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardAddsEntry()] Replaced integer addition with subtraction → KILLED
47		1.1 Location : writeLeaderboard Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:writeLeaderboardAddsEntry()] removed call to com/badlogic/gdx/files/FileHandle::writeString → KILLED
55		1.1 Location : readLeaderboardAsStrings Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:readLeaderboardAsStringsFormatsCorrectly()] negated conditional → KILLED 2.2 Location : readLeaderboardAsStrings Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:readLeaderboardAsStringsFormatsCorrectly()] changed conditional boundary → KILLED
59		1.1 Location : readLeaderboardAsStrings Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:readLeaderboardAsStringsFormatsCorrectly()] replaced return value with null for io/github/some_example_name/JSONHandler::readLeaderboardAsStrings → KILLED
64		1.1 Location : resetFile Killed by : io.github.some_example_name.JSONHandlerTest.[engine:junit-jupiter]/[class:io.github.some_example_name.JSONHandlerTest]/[method:readLeaderboardWhenFileEmptyReturnsEmptyArray()] removed call to com/badlogic/gdx/files/FileHandle::writeString → KILLED

JSONHandler.java

Mutations

Active mutators

Tests examined