Move option interface and default implementation to top-level classes.

[Sone.git] / src / test / java / net / pterodactylus / sone / utils / DefaultOptionTest.java

diff --git a/src/test/java/net/pterodactylus/sone/utils/DefaultOptionTest.java b/src/test/java/net/pterodactylus/sone/utils/DefaultOptionTest.java
new file mode 100644 (file)
index 0000000..b02d530
--- /dev/null
+++ b/src/test/java/net/pterodactylus/sone/utils/DefaultOptionTest.java
@@ -0,0 +1,89 @@
+package net.pterodactylus.sone.utils;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.nullValue;
+
+import javax.annotation.Nullable;
+
+import net.pterodactylus.sone.utils.DefaultOption;
+
+import com.google.common.base.Predicate;
+import org.junit.Test;
+
+/**
+ * Unit test for {@link DefaultOption}.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class DefaultOptionTest {
+
+       private final Object defaultValue = new Object();
+       private final Object acceptedValue = new Object();
+       private final Predicate<Object> matchesAcceptedValue = new Predicate<Object>() {
+               @Override
+               public boolean apply(@Nullable Object object) {
+                       return acceptedValue.equals(object);
+               }
+       };
+
+       @Test
+       public void defaultOptionReturnsDefaultValueWhenUnset() {
+               DefaultOption<Object> defaultOption = new DefaultOption<Object>(defaultValue);
+               assertThat(defaultOption.get(), is(defaultValue));
+       }
+
+       @Test
+       public void defaultOptionReturnsNullForRealWhenUnset() {
+               DefaultOption<Object> defaultOption = new DefaultOption<Object>(defaultValue);
+               assertThat(defaultOption.getReal(), nullValue());
+       }
+
+       @Test
+       public void defaultOptionWillReturnSetValue() {
+               DefaultOption<Object> defaultOption = new DefaultOption<Object>(defaultValue);
+               Object newValue = new Object();
+               defaultOption.set(newValue);
+               assertThat(defaultOption.get(), is(newValue));
+       }
+
+       @Test
+       public void defaultOptionWithValidatorAcceptsValidValues() {
+               DefaultOption<Object> defaultOption = new DefaultOption<Object>(defaultValue, matchesAcceptedValue);
+               defaultOption.set(acceptedValue);
+               assertThat(defaultOption.get(), is(acceptedValue));
+       }
+
+       @Test(expected = IllegalArgumentException.class)
+       public void defaultOptionWithValidatorRejectsInvalidValues() {
+               DefaultOption<Object> defaultOption = new DefaultOption<Object>(defaultValue, matchesAcceptedValue);
+               defaultOption.set(new Object());
+       }
+
+       @Test
+       public void defaultOptionValidatesObjectsCorrectly() {
+               DefaultOption<Object> defaultOption = new DefaultOption<Object>(defaultValue, matchesAcceptedValue);
+               assertThat(defaultOption.validate(acceptedValue), is(true));
+               assertThat(defaultOption.validate(new Object()), is(false));
+       }
+
+       @Test
+       public void settingToNullWillRestoreDefaultValue() {
+               DefaultOption<Object> defaultOption = new DefaultOption<Object>(defaultValue);
+               defaultOption.set(null);
+               assertThat(defaultOption.get(), is(defaultValue));
+       }
+
+       @Test
+       public void validateWithoutValidatorWillValidateNull() {
+               DefaultOption<Object> defaultOption = new DefaultOption<Object>(defaultValue);
+               assertThat(defaultOption.validate(null), is(true));
+       }
+
+       @Test
+       public void validateWithValidatorWillValidateNull() {
+               DefaultOption<Object> defaultOption = new DefaultOption<Object>(defaultValue, matchesAcceptedValue);
+               assertThat(defaultOption.validate(null), is(true));
+       }
+
+}