init and unit tests

src/main/java/com/softwaresmyth/functions/OrNot.java

@@ -0,0 +1,21 @@
+package com.softwaresmyth.functions;
+
+import java.util.Optional;
+
+public class OrNot
+{
+    public static void noop(Object... ignored)
+    {
+        //do nothing
+    }
+
+    public static <T> T returnNull(Object... ignored)
+    {
+        return null;
+    }
+
+    public static <T> Optional<T> returnEmpty(Object... ignored)
+    {
+        return Optional.empty();
+    }
+}

src/test/java/com/softwaresmyth/functions/NoopTest.java

@@ -0,0 +1,21 @@
+package com.softwaresmyth.functions;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.function.BiConsumer;
+import java.util.function.Consumer;
+
+class NoopTest {
+    @Test
+    void TestOneArg() {
+        Consumer<String> toTest = OrNot::noop;
+        toTest.accept("Ignored");
+    }
+
+    @Test
+    void TestTwoArg() {
+        BiConsumer<Double, Boolean> toTest = OrNot::noop;
+        toTest.accept(0.0, false);
+    }
+
+}

src/test/java/com/softwaresmyth/functions/ReturnEmptyTest.java

@@ -0,0 +1,32 @@
+package com.softwaresmyth.functions;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.Optional;
+import java.util.function.BiFunction;
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+class ReturnEmptyTest {
+    @Test
+    void TestZeroArgs() {
+        Supplier<Optional<String>> toTest = OrNot::returnEmpty;
+        Optional<String> result = toTest.get();
+        Assertions.assertFalse(result.isPresent());
+    }
+
+    @Test
+    void TestOneArg() {
+        Function<Double, Optional<String>> toTest = OrNot::returnEmpty;
+        Optional<String> result = toTest.apply(0.0);
+        Assertions.assertFalse(result.isPresent());
+    }
+
+    @Test
+    void TestTwoArg() {
+        BiFunction<Double, Boolean, Optional<String>> toTest = OrNot::returnEmpty;
+        Optional<String> result = toTest.apply(0.0, false);
+        Assertions.assertFalse(result.isPresent());
+    }
+}

src/test/java/com/softwaresmyth/functions/ReturnNullTest.java

@@ -0,0 +1,32 @@
+package com.softwaresmyth.functions;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.function.BiFunction;
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+class ReturnNullTest {
+    @Test
+    void TestZeroArgs() {
+        Supplier<String> toTest = OrNot::returnNull;
+        String result = toTest.get();
+        Assertions.assertNull(result);
+    }
+
+    @Test
+    void TestOneArg() {
+        Function<Double, String> toTest = OrNot::returnNull;
+        String result = toTest.apply(0.0);
+        Assertions.assertNull(result);
+    }
+
+    @Test
+    void TestTwoArg() {
+        BiFunction<Double, Boolean, String> toTest = OrNot::returnNull;
+        String result = toTest.apply(0.0, false);
+        Assertions.assertNull(result);
+    }
+
+}