Merge branch 'master' into mc-1.14.x

src/test/java/dan200/computercraft/shared/network/client/TerminalStateTest.java

@@ -0,0 +1,85 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2020. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
+package dan200.computercraft.shared.network.client;
+
+import dan200.computercraft.core.terminal.Terminal;
+import dan200.computercraft.core.terminal.TextBuffer;
+import io.netty.buffer.Unpooled;
+import net.minecraft.network.PacketBuffer;
+import org.junit.jupiter.api.RepeatedTest;
+
+import java.util.Random;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * Tests {@link TerminalState} round tripping works as expected.
+ */
+public class TerminalStateTest
+{
+    @RepeatedTest( 5 )
+    public void testCompressed()
+    {
+        Terminal terminal = randomTerminal();
+
+        PacketBuffer buffer = new PacketBuffer( Unpooled.directBuffer() );
+        new TerminalState( true, terminal, true ).write( buffer );
+
+        checkEqual( terminal, read( buffer ) );
+        assertEquals( 0, buffer.readableBytes() );
+    }
+
+    @RepeatedTest( 5 )
+    public void testUncompressed()
+    {
+        Terminal terminal = randomTerminal();
+
+        PacketBuffer buffer = new PacketBuffer( Unpooled.directBuffer() );
+        new TerminalState( true, terminal, false ).write( buffer );
+
+        checkEqual( terminal, read( buffer ) );
+        assertEquals( 0, buffer.readableBytes() );
+    }
+
+    private static Terminal randomTerminal()
+    {
+        Random random = new Random();
+        Terminal terminal = new Terminal( 10, 5 );
+        for( int y = 0; y < terminal.getHeight(); y++ )
+        {
+            TextBuffer buffer = terminal.getLine( y );
+            for( int x = 0; x < buffer.length(); x++ ) buffer.setChar( x, (char) (random.nextInt( 26 ) + 65) );
+        }
+
+        return terminal;
+    }
+
+    private static void checkEqual( Terminal expected, Terminal actual )
+    {
+        assertNotNull( expected, "Expected cannot be null" );
+        assertNotNull( actual, "Actual cannot be null" );
+        assertEquals( expected.getHeight(), actual.getHeight(), "Heights must match" );
+        assertEquals( expected.getWidth(), actual.getWidth(), "Widths must match" );
+
+        for( int y = 0; y < expected.getHeight(); y++ )
+        {
+            assertEquals( expected.getLine( y ).toString(), actual.getLine( y ).toString() );
+        }
+    }
+
+    private static Terminal read( PacketBuffer buffer )
+    {
+        TerminalState state = new TerminalState( buffer );
+        assertTrue( state.colour );
+
+        if( !state.hasTerminal() ) return null;
+
+        Terminal other = new Terminal( state.width, state.height );
+        state.apply( other );
+        return other;
+    }
+}