Write partial tests for SEE

bjforth/src/test/java/bjforth/primitives/SEETest.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2025 Bahman Movaqar
+ *
+ * This file is part of bjForth.
+ *
+ * bjForth 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.
+ *
+ * bjForth 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 bjForth. If not, see <https://www.gnu.org/licenses/>.
+ */
+package bjforth.primitives;
+
+import static bjforth.machine.BootstrapUtils.getPrimitiveAddress;
+import static bjforth.machine.MachineBuilder.aMachine;
+import static bjforth.machine.MachineStateBuilder.aMachineState;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.*;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+class SEETest {
+
+  private final PrintStream originalSystemOut = System.out;
+  private ByteArrayOutputStream outputStream = null;
+  private PrintStream systemOut = null;
+  private final InputStream originalSystemIn = System.in;
+
+  @AfterEach
+  public void restoreSystemIn() {
+    System.setIn(originalSystemIn);
+    System.setOut(originalSystemOut);
+    systemOut.close();
+    systemOut = null;
+    try {
+      outputStream.close();
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    } finally {
+      outputStream = null;
+    }
+  }
+
+  @BeforeEach
+  public void setupSystemOut() {
+    PrimitiveFactoryModificationUtils.resetAllPrimitives();
+    outputStream = new ByteArrayOutputStream();
+    systemOut = new PrintStream(outputStream);
+    System.setOut(systemOut);
+  }
+
+  @Test
+  void worksOkPrimitive() {
+    // GIVEN
+    var wordStr = "+";
+    var str = wordStr + " ";
+    var inputStream = new ByteArrayInputStream(str.getBytes());
+    System.setIn(inputStream);
+
+    var SEEaddr = getPrimitiveAddress("SEE");
+    var actualState = aMachineState().withInstrcutionPointer(SEEaddr).build();
+    var machine = aMachine().withState(actualState).build();
+
+    // WHEN
+    machine.step();
+
+    // THEN
+    assertThat(outputStream.toString()).containsIgnoringWhitespaces("Primitive", "ADD");
+  }
+}