Fourth pass

lib3270j/src/test/java/org/lib3270j/input/InputProcessorTest.java

@@ -0,0 +1,53 @@
+package org.lib3270j.input;
+
+import org.junit.jupiter.api.Test;
+import org.lib3270j.TerminalModel;
+import org.lib3270j.charset.EbcdicTranslator;
+import org.lib3270j.screen.ScreenBuffer;
+import org.lib3270j.telnet.TelnetFSM;
+import static org.junit.jupiter.api.Assertions.*;
+import static org.lib3270j.protocol.DS3270Constants.*;
+
+public class InputProcessorTest {
+
+    private final EbcdicTranslator translator = new EbcdicTranslator();
+    private final ScreenBuffer screen = new ScreenBuffer(TerminalModel.IBM_3279_4, translator);
+
+    @Test
+    public void testKybdPrimeOnUnformattedScreen() {
+        InputProcessor input = new InputProcessor(screen, translator, null);
+        int cap = input.kybdPrime();
+        assertEquals(screen.getRows() * screen.getCols(), cap);
+        assertEquals(0, screen.getCursorAddress());
+    }
+
+    @Test
+    public void testKybdPrimeOnFormattedScreen() {
+        InputProcessor input = new InputProcessor(screen, translator, null);
+        screen.erase(false);
+        screen.setCellFA(0, (byte) FA_PRINTABLE); // Unprotected field at 0 (length = 19)
+        screen.setCellFA(20, (byte) (FA_PRINTABLE | FA_PROTECT)); // Protected field at 20
+
+        int cap = input.kybdPrime();
+        assertEquals(19, cap);
+        assertEquals(1, screen.getCursorAddress());
+    }
+
+    @Test
+    public void testEraseInput() {
+        InputProcessor input = new InputProcessor(screen, translator, null);
+        screen.erase(false);
+        screen.setCellFA(0, (byte) FA_PRINTABLE);
+        screen.setCursorAddress(1);
+        input.typeCharacter('A');
+        input.typeCharacter('B');
+
+        assertEquals('A', screen.getCell(1).ucs4);
+        assertEquals('B', screen.getCell(2).ucs4);
+
+        input.eraseInput();
+
+        assertEquals(0, screen.getCell(1).ec);
+        assertEquals(0, screen.getCell(2).ec);
+    }
+}