add sources (for web crawler), implement unit tests for json config

src/main/java/com/mykola2312/mptv/config/Config.java

@@ -4,10 +4,12 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.List;
 
 public class Config {
     public FrameConfig frame;
     public DBConfig db;
+    public List<SourceItem> sources;
 
     public static Config loadConfig(String path) throws IOException {
         return new ObjectMapper().readerFor(Config.class).readValue(new File(path));

src/main/java/com/mykola2312/mptv/config/SourceItem.java

@@ -0,0 +1,22 @@
+package com.mykola2312.mptv.config;
+
+import org.checkerframework.checker.nullness.qual.*;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public class SourceItem {
+    public enum SourceType {
+        @JsonProperty("m3u")
+        M3U
+    }
+
+    @NonNull
+    public SourceType type;
+    public String url;
+    
+    @Nullable
+    public String cookies;
+
+    @Nullable
+    public String singleCategory;
+}

src/test/java/com/mykola2312/mptv/TestConfig.java

@@ -0,0 +1,82 @@
+package com.mykola2312.mptv;
+
+import org.junit.jupiter.api.Test;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.mykola2312.mptv.config.Config;
+import com.mykola2312.mptv.config.SourceItem;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.io.IOException;
+
+public class TestConfig {
+    public static final String JSON_CONFIG =
+    """
+        {
+            "frame": {
+              "width": 1366,
+              "height": 1024,
+              "fullscreen": false,
+              "fontName": "Arial",
+              "fontSize": 64
+            },
+          
+            "db": {
+              "url": "jdbc:sqlite:mptv.db",
+              "user": "",
+              "password": ""
+            },
+          
+            "sources": [
+              {
+                "type": "m3u",
+                "url": "https://example.com/list.m3u",
+                "cookies": null,
+                "singleCategory": null
+              }
+            ]
+          }
+    """;
+
+    private static Config loadConfig() throws IOException {
+        return new ObjectMapper().readerFor(Config.class).readValue(JSON_CONFIG);
+    }
+
+    @Test()
+    public void testConfigGeneral() {
+        Config config = null;
+        try {
+            config = loadConfig();
+        } catch (IOException e) {
+            e.printStackTrace();
+            return;
+        }
+        assertNotNull(config);
+
+        assertNotNull(config.frame);
+        assertNotNull(config.db);
+        assertNotNull(config.sources);
+    }
+
+    @Test()
+    public void testSources() {
+        Config config = null;
+        try {
+            config = loadConfig();
+        } catch (IOException e) {
+            e.printStackTrace();
+            return;
+        }
+        assertNotNull(config);
+        assertNotNull(config.sources);
+
+        assertNotEquals(0, config.sources.size());
+        
+        SourceItem m3u = config.sources.get(0);
+        assertEquals(SourceItem.SourceType.M3U, m3u.type);
+        assertEquals("https://example.com/list.m3u", m3u.url);
+        assertNull(m3u.cookies);
+        assertNull(m3u.singleCategory);
+    }
+}