支持使用 data URI 作为背景图片源 (#4182)

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

@@ -0,0 +1,44 @@
+/*
+ * Hello Minecraft! Launcher
+ * Copyright (C) 2025 huangyuhui <huanghongxun2008@126.com> and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.jackhuang.hmcl.util.io;
+
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.net.URI;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public final class DataUriTest {
+
+    private static String readString(String uri) throws IOException {
+        return new DataUri(URI.create(uri)).readString();
+    }
+
+    private static byte[] readBytes(String uri) throws IOException {
+        return new DataUri(URI.create(uri)).readBytes();
+    }
+
+    @Test
+    public void testReadString() throws IOException {
+        assertEquals("Hello, World!", readString("data:,Hello%2C%20World%21"));
+        assertEquals("Hello, World!", readString("data:text/plain;base64,SGVsbG8sIFdvcmxkIQ=="));
+        assertEquals("<h1>Hello, World!</h1>", readString("data:text/html,%3Ch1%3EHello%2C%20World%21%3C%2Fh1%3E"));
+        assertEquals("<script>alert('hi');</script>", readString("data:text/html,%3Cscript%3Ealert%28%27hi%27%29%3B%3C%2Fscript%3E"));
+    }
+}