X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=era.mi%2Fsrc%2Fera%2Fmi%2Flogic%2Ftests%2FComponentTest.java;h=b1c9f5e43994534a03b980287d6fbde091dd08bc;hb=74aebd92f41d03f4a44c9a455ef8c05465136412;hp=d48c5c630c9421d1c9c5ec4261d8003f49182908;hpb=a07a799d9d93669126a544b88856a05e11323b79;p=Mograsim.git

diff --git a/era.mi/src/era/mi/logic/tests/ComponentTest.java b/era.mi/src/era/mi/logic/tests/ComponentTest.java
index d48c5c63..b1c9f5e4 100644
--- a/era.mi/src/era/mi/logic/tests/ComponentTest.java
+++ b/era.mi/src/era/mi/logic/tests/ComponentTest.java
@@ -21,282 +21,268 @@ import era.mi.logic.components.gates.XorGate;
 import era.mi.logic.wires.WireArray;
 import era.mi.logic.wires.WireArray.WireArrayInput;
 
-class ComponentTest
-{
-    
+class ComponentTest {
+
 	@Test
-	void circuitExampleTest()
-	{
+	void circuitExampleTest() {
 		Simulation.TIMELINE.reset();
-		WireArray a = new WireArray(1, 1), b = new WireArray(1, 1), c = new WireArray(1, 10), d = new WireArray(2, 1), e = new WireArray(1, 1),
-				f = new WireArray(1, 1), g = new WireArray(1, 1), h = new WireArray(2, 1), i = new WireArray(2, 1), j = new WireArray(1, 1), k = new WireArray(1, 1);
+		WireArray a = new WireArray(1, 1), b = new WireArray(1, 1), c = new WireArray(1, 10), d = new WireArray(2, 1),
+				e = new WireArray(1, 1), f = new WireArray(1, 1), g = new WireArray(1, 1), h = new WireArray(2, 1), i = new WireArray(2, 1),
+				j = new WireArray(1, 1), k = new WireArray(1, 1);
 		new AndGate(1, f, a, b);
 		new NotGate(1, f, g);
 		new Merger(h, c, g);
 		new Mux(1, i, e, h, d);
 		new Splitter(i, k, j);
-		
+
 		a.createInput().feedSignals(Bit.ZERO);
 		b.createInput().feedSignals(Bit.ONE);
 		c.createInput().feedSignals(Bit.ZERO);
 		d.createInput().feedSignals(Bit.ONE, Bit.ONE);
 		e.createInput().feedSignals(Bit.ZERO);
-		
+
 		Simulation.TIMELINE.executeAll();
-		
+
 		assertEquals(Bit.ONE, j.getValue());
 		assertEquals(Bit.ZERO, k.getValue());
 	}
 
-    @Test
-    void splitterTest()
-    {
-	Simulation.TIMELINE.reset();
-	WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), in = new WireArray(8, 1);
-	in.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
-	new Splitter(in, a, b, c);
+	@Test
+	void splitterTest() {
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), in = new WireArray(8, 1);
+		in.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+		new Splitter(in, a, b, c);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(a.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO);
+		assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO);
+		assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE);
+	}
+
+	@Test
+	void mergerTest() {
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), out = new WireArray(8, 1);
+		a.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);
+		b.createInput().feedSignals(Bit.ONE, Bit.ZERO);
+		c.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
+
+		new Merger(out, a, b, c);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertTrue(
+				Arrays.equals(out.getValues(), new Bit[] { Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE }));
+	}
+
+	@Test
+	void triStateBufferTest() {
+		WireArray a = new WireArray(1, 1), b = new WireArray(1, 1), en = new WireArray(1, 1), notEn = new WireArray(1, 1);
+		new NotGate(1, en, notEn);
+		new TriStateBuffer(1, a, b, en);
+		new TriStateBuffer(1, b, a, notEn);
+
+		WireArrayInput enI = en.createInput(), aI = a.createInput(), bI = b.createInput();
+		enI.feedSignals(Bit.ONE);
+		aI.feedSignals(Bit.ONE);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertEquals(Bit.ONE, b.getValue());
+
+		bI.feedSignals(Bit.ZERO);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertEquals(Bit.X, b.getValue());
+		assertEquals(Bit.ONE, a.getValue());
+
+		aI.clearSignals();
+		enI.feedSignals(Bit.ZERO);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertEquals(Bit.ZERO, a.getValue());
+
+	}
+
+	@Test
+	void muxTest() {
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(4, 3), b = new WireArray(4, 6), c = new WireArray(4, 4), select = new WireArray(2, 5),
+				out = new WireArray(4, 1);
+		WireArrayInput selectIn = select.createInput();
+
+		selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
+		a.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+		c.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+		new Mux(1, out, select, a, b, c);
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(out.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+		selectIn.feedSignals(Bit.ZERO, Bit.ONE);
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+		selectIn.feedSignals(Bit.ONE, Bit.ONE);
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(out.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+
+	}
+
+	@Test
+	void demuxTest() {
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(4, 3), b = new WireArray(4, 6), c = new WireArray(4, 4), select = new WireArray(2, 5),
+				in = new WireArray(4, 1);
+		WireArrayInput selectIn = select.createInput();
+
+		selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
+		in.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+
+		new Demux(1, in, select, a, b, c);
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(a.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+		assertBitArrayEquals(b.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+		assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+		selectIn.feedSignals(Bit.ZERO, Bit.ONE);
+		Simulation.TIMELINE.executeAll();
 
-	Simulation.TIMELINE.executeAll();
+		assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+		assertBitArrayEquals(b.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+		assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
 
-	assertBitArrayEquals(a.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO);
-	assertBitArrayEquals(b.getValues(), Bit.ONE, Bit.ZERO);
-	assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE);
-    }
+		selectIn.feedSignals(Bit.ONE, Bit.ONE);
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+		assertBitArrayEquals(b.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+		assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+
+	}
+
+	@Test
+	void andTest() {
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(4, 1), b = new WireArray(4, 3), c = new WireArray(4, 1);
+		new AndGate(1, c, a, b);
+		a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
+		b.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(c.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ZERO);
+	}
+
+	@Test
+	void orTest() {
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(4, 1), b = new WireArray(4, 3), c = new WireArray(4, 1);
+		new OrGate(1, c, a, b);
+		a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
+		b.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+
+		Simulation.TIMELINE.executeAll();
+
+		assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ONE);
+	}
 
-    @Test
-    void mergerTest()
-    {
-	Simulation.TIMELINE.reset();
-	WireArray a = new WireArray(3, 1), b = new WireArray(2, 1), c = new WireArray(3, 1), out = new WireArray(8, 1);
-	a.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO);
-	b.createInput().feedSignals(Bit.ONE, Bit.ZERO);
-	c.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
+	@Test
+	void xorTest() {
+		Simulation.TIMELINE.reset();
+		WireArray a = new WireArray(3, 1), b = new WireArray(3, 2), c = new WireArray(3, 1), d = new WireArray(3, 1);
+		new XorGate(1, d, a, b, c);
+		a.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
+		b.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
+		c.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
 
-	new Merger(out, a, b, c);
+		Simulation.TIMELINE.executeAll();
 
-	Simulation.TIMELINE.executeAll();
+		assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ONE, Bit.ONE);
+	}
 
-	assertTrue(Arrays.equals(out.getValues(),
-		new Bit[] { Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE }));
-    }
+	@Test
+	void rsLatchCircuitTest() {
+		Simulation.TIMELINE.reset();
+		WireArray r = new WireArray(1, 1), s = new WireArray(1, 1), t1 = new WireArray(1, 15), t2 = new WireArray(1, 1),
+				q = new WireArray(1, 1), nq = new WireArray(1, 1);
 
-    @Test
-    void triStateBufferTest()
-    {
-	WireArray a = new WireArray(1, 1), b = new WireArray(1, 1), en = new WireArray(1, 1),
-		notEn = new WireArray(1, 1);
-	new NotGate(1, en, notEn);
-	new TriStateBuffer(1, a, b, en);
-	new TriStateBuffer(1, b, a, notEn);
+		new OrGate(1, t2, r, nq);
+		new OrGate(1, t1, s, q);
+		new NotGate(1, t2, q);
+		new NotGate(1, t1, nq);
 
-	WireArrayInput enI = en.createInput(), aI = a.createInput(), bI = b.createInput();
-	enI.feedSignals(Bit.ONE);
-	aI.feedSignals(Bit.ONE);
+		WireArrayInput sIn = s.createInput(), rIn = r.createInput();
 
-	Simulation.TIMELINE.executeAll();
-
-	assertEquals(Bit.ONE, b.getValue());
+		sIn.feedSignals(Bit.ONE);
+		rIn.feedSignals(Bit.ZERO);
 
-	bI.feedSignals(Bit.ZERO);
+		Simulation.TIMELINE.executeAll();
 
-	Simulation.TIMELINE.executeAll();
+		assertEquals(Bit.ONE, q.getValue());
+		assertEquals(Bit.ZERO, nq.getValue());
 
-	assertEquals(Bit.X, b.getValue());
-	assertEquals(Bit.ONE, a.getValue());
-
-	aI.clearSignals();
-	enI.feedSignals(Bit.ZERO);
-
-	Simulation.TIMELINE.executeAll();
-
-	assertEquals(Bit.ZERO, a.getValue());
-
-    }
-
-    @Test
-    void muxTest()
-    {
-	Simulation.TIMELINE.reset();
-	WireArray a = new WireArray(4, 3), b = new WireArray(4, 6), c = new WireArray(4, 4),
-		select = new WireArray(2, 5), out = new WireArray(4, 1);
-	WireArrayInput selectIn = select.createInput();
-
-	selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
-	a.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
-	c.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
-
-	new Mux(1, out, select, a, b, c);
-	Simulation.TIMELINE.executeAll();
-
-	assertBitArrayEquals(out.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
-	selectIn.feedSignals(Bit.ZERO, Bit.ONE);
-	Simulation.TIMELINE.executeAll();
-
-	assertBitArrayEquals(out.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
-
-	selectIn.feedSignals(Bit.ONE, Bit.ONE);
-	Simulation.TIMELINE.executeAll();
-
-	assertBitArrayEquals(out.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
-
-    }
+		sIn.feedSignals(Bit.ZERO);
 
-    @Test
-    void demuxTest()
-    {
-	Simulation.TIMELINE.reset();
-	WireArray a = new WireArray(4, 3), b = new WireArray(4, 6), c = new WireArray(4, 4),
-		select = new WireArray(2, 5), in = new WireArray(4, 1);
-	WireArrayInput selectIn = select.createInput();
+		Simulation.TIMELINE.executeAll();
+		assertEquals(Bit.ONE, q.getValue());
+		assertEquals(Bit.ZERO, nq.getValue());
 
-	selectIn.feedSignals(Bit.ZERO, Bit.ZERO);
-	in.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+		rIn.feedSignals(Bit.ONE);
 
-	new Demux(1, in, select, a, b, c);
-	Simulation.TIMELINE.executeAll();
+		Simulation.TIMELINE.executeAll();
 
-	assertBitArrayEquals(a.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
-	assertBitArrayEquals(b.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
-	assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
-	selectIn.feedSignals(Bit.ZERO, Bit.ONE);
-	Simulation.TIMELINE.executeAll();
+		assertEquals(Bit.ZERO, q.getValue());
+		assertEquals(Bit.ONE, nq.getValue());
+	}
 
-	assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
-	assertBitArrayEquals(b.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
-	assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ZERO, Bit.ONE, Bit.ZERO);
+	@Test
+	void numericValueTest() {
+		Simulation.TIMELINE.reset();
 
-	selectIn.feedSignals(Bit.ONE, Bit.ONE);
-	Simulation.TIMELINE.executeAll();
+		WireArray a = new WireArray(4, 1);
+		a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ONE, Bit.ONE);
 
-	assertBitArrayEquals(a.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
-	assertBitArrayEquals(b.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
-	assertBitArrayEquals(c.getValues(), Bit.Z, Bit.Z, Bit.Z, Bit.Z);
+		Simulation.TIMELINE.executeAll();
 
-    }
-    
-    @Test
-    void andTest()
-    {
-	Simulation.TIMELINE.reset();
-	WireArray a = new WireArray(4, 1), b = new WireArray(4, 3), c = new WireArray(4, 1);
-	new AndGate(1, c, a, b);
-	a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
-	b.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+		assertEquals(15, a.getUnsignedValue());
+		assertEquals(-1, a.getSignedValue());
+	}
 
-	Simulation.TIMELINE.executeAll();
-	
-	assertBitArrayEquals(c.getValues(), Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ZERO);
-    }
+	@Test
+	void multipleInputs() {
+		Simulation.TIMELINE.reset();
+		WireArray w = new WireArray(2, 1);
+		WireArrayInput wI1 = w.createInput(), wI2 = w.createInput();
+		wI1.feedSignals(Bit.ONE, Bit.Z);
+		wI2.feedSignals(Bit.Z, Bit.X);
+		Simulation.TIMELINE.executeAll();
+		assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.X);
 
-    @Test
-    void orTest()
-    {
-	Simulation.TIMELINE.reset();
-	WireArray a = new WireArray(4, 1), b = new WireArray(4, 3), c = new WireArray(4, 1);
-	new OrGate(1, c, a, b);
-	a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ZERO);
-	b.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ZERO, Bit.ONE);
+		wI2.feedSignals(Bit.ZERO, Bit.Z);
+		Simulation.TIMELINE.executeAll();
+		assertBitArrayEquals(w.getValues(), Bit.X, Bit.Z);
 
-	Simulation.TIMELINE.executeAll();
+		wI2.feedSignals(Bit.Z, Bit.Z);
+		Simulation.TIMELINE.executeAll();
+		assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
 
-	assertBitArrayEquals(c.getValues(), Bit.ONE, Bit.ONE, Bit.ZERO, Bit.ONE);
-    }
-    
-    @Test
-    void xorTest()
-    {
-	Simulation.TIMELINE.reset();
-	WireArray a = new WireArray(3, 1), b = new WireArray(3, 2), c = new WireArray(3, 1), d = new WireArray(3, 1);
-	new XorGate(1, d, a, b, c);
-	a.createInput().feedSignals(Bit.ZERO, Bit.ONE, Bit.ONE);
-	b.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
-	c.createInput().feedSignals(Bit.ONE, Bit.ZERO, Bit.ONE);
-
-	Simulation.TIMELINE.executeAll();
-
-	assertBitArrayEquals(d.getValues(), Bit.ZERO, Bit.ONE, Bit.ONE);
-    }
-
-    @Test
-    void rsLatchCircuitTest()
-    {
-	Simulation.TIMELINE.reset();
-	WireArray r = new WireArray(1, 1), s = new WireArray(1, 1), t1 = new WireArray(1, 15), t2 = new WireArray(1, 1),
-		q = new WireArray(1, 1), nq = new WireArray(1, 1);
-
-	new OrGate(1, t2, r, nq);
-	new OrGate(1, t1, s, q);
-	new NotGate(1, t2, q);
-	new NotGate(1, t1, nq);
-
-	WireArrayInput sIn = s.createInput(), rIn = r.createInput();
-
-	sIn.feedSignals(Bit.ONE);
-	rIn.feedSignals(Bit.ZERO);
-
-	Simulation.TIMELINE.executeAll();
-
-	assertEquals(Bit.ONE, q.getValue());
-	assertEquals(Bit.ZERO, nq.getValue());
-
-	sIn.feedSignals(Bit.ZERO);
-
-	Simulation.TIMELINE.executeAll();
-	assertEquals(Bit.ONE, q.getValue());
-	assertEquals(Bit.ZERO, nq.getValue());
-
-	rIn.feedSignals(Bit.ONE);
-
-	Simulation.TIMELINE.executeAll();
-
-	assertEquals(Bit.ZERO, q.getValue());
-	assertEquals(Bit.ONE, nq.getValue());
-    }
-
-    @Test
-    void numericValueTest()
-    {
-	Simulation.TIMELINE.reset();
-
-	WireArray a = new WireArray(4, 1);
-	a.createInput().feedSignals(Bit.ONE, Bit.ONE, Bit.ONE, Bit.ONE);
-
-	Simulation.TIMELINE.executeAll();
-
-	assertEquals(15, a.getUnsignedValue());
-	assertEquals(-1, a.getSignedValue());
-    }
-
-    @Test
-    void multipleInputs()
-    {
-	Simulation.TIMELINE.reset();
-	WireArray w = new WireArray(2, 1);
-	WireArrayInput wI1 = w.createInput(), wI2 = w.createInput();
-	wI1.feedSignals(Bit.ONE, Bit.Z);
-	wI2.feedSignals(Bit.Z, Bit.X);
-	Simulation.TIMELINE.executeAll();
-	assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.X);
-
-	wI2.feedSignals(Bit.ZERO, Bit.Z);
-	Simulation.TIMELINE.executeAll();
-	assertBitArrayEquals(w.getValues(), Bit.X, Bit.Z);
-
-	wI2.feedSignals(Bit.Z, Bit.Z);
-	Simulation.TIMELINE.executeAll();
-	assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
-
-	wI2.feedSignals(Bit.ONE, Bit.Z);
-	w.addObserver((i, oldValues) -> fail("WireArray notified observer, although value did not change."));
-	Simulation.TIMELINE.executeAll();
-	assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
-    }
+		wI2.feedSignals(Bit.ONE, Bit.Z);
+		w.addObserver((i, oldValues) -> fail("WireArray notified observer, although value did not change."));
+		Simulation.TIMELINE.executeAll();
+		assertBitArrayEquals(w.getValues(), Bit.ONE, Bit.Z);
+	}
 
 	@Test
-	void wireConnections()
-	{
+	void wireConnections() {
 		// Nur ein Experiment, was über mehrere 'passive' Bausteine hinweg passieren würde
-		
+
 		Simulation.TIMELINE.reset();
 
 		WireArray a = new WireArray(1, 2);
@@ -331,7 +317,7 @@ class ComponentTest
 		System.err.println("Z");
 		bI.feedSignals(Bit.Z);
 		test.assertAfterSimulationIs(print, Bit.Z);
-		
+
 		new Connector(a, b);
 		System.err.println("Z 2");
 		aI.feedSignals(Bit.Z);
@@ -349,7 +335,7 @@ class ComponentTest
 		aI.feedSignals(Bit.Z);
 		test.assertAfterSimulationIs(print, Bit.Z);
 		test2.assertAfterSimulationIs(Bit.Z);
-		
+
 		System.err.println("No Conflict yet");
 		bI.feedSignals(Bit.ONE);
 		test.assertAfterSimulationIs(print, Bit.ONE);
@@ -366,8 +352,7 @@ class ComponentTest
 		test2.assertAfterSimulationIs(Bit.ONE);
 	}
 
-    private static void assertBitArrayEquals(Bit[] actual, Bit... expected)
-    {
-    	assertArrayEquals(expected, actual);
-    }
+	private static void assertBitArrayEquals(Bit[] actual, Bit... expected) {
+		assertArrayEquals(expected, actual);
+	}
 }