弃用 charsetCandidates (#2683)

* update

* create test

HMCLCore/src/test/java/org/jackhuang/hmcl/util/io/CompressingUtilsTest.java

@@ -0,0 +1,41 @@
+package org.jackhuang.hmcl.util.io;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.stream.Stream;
+
+import static org.jackhuang.hmcl.util.Pair.pair;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+/**
+ * @author Glavo
+ */
+public final class CompressingUtilsTest {
+
+    public static Stream<Arguments> arguments() {
+        return Stream.of(
+                pair("utf-8.zip", StandardCharsets.UTF_8),
+                pair("gbk.zip", Charset.forName("GB18030"))
+        ).map(pair -> {
+            try {
+                return Arguments.of(Paths.get(CompressingUtilsTest.class.getResource("/zip/" + pair.getKey()).toURI()), pair.getValue());
+            } catch (URISyntaxException e) {
+                throw new AssertionError(e);
+            }
+        });
+    }
+
+    @ParameterizedTest
+    @MethodSource("arguments")
+    public void testFindSuitableEncoding(Path path, Charset charset) throws IOException {
+        assertEquals(charset, CompressingUtils.findSuitableEncoding(path));
+    }
+}