Add MissingMergedAnnotation Tests

Add tests for `MissingMergedAnnotation`

See gh-21697

spring-core/src/test/java/org/springframework/core/annotation/MissingMergedAnnotationTests.java

@@ -0,0 +1,292 @@
+/*
+ * Copyright 2002-2018 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.core.annotation;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.util.Collections;
+import java.util.Map;
+import java.util.NoSuchElementException;
+
+import org.assertj.core.api.ThrowableTypeAssert;
+import org.junit.Test;
+
+import org.springframework.util.ConcurrentReferenceHashMap;
+
+import static org.assertj.core.api.Assertions.*;
+
+/**
+ * Tests for {@link MissingMergedAnnotation}.
+ *
+ * @author Phillip Webb
+ */
+public class MissingMergedAnnotationTests {
+
+	private final MergedAnnotation<?> missing = MissingMergedAnnotation.getInstance();
+
+	@Test
+	public void getTypeThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(() -> this.missing.getType());
+	}
+
+	@Test
+	public void isPresentReturnsFalse() {
+		assertThat(this.missing.isPresent()).isFalse();
+	}
+
+	@Test
+	public void isDirectlyPresentReturnsFalse() {
+		assertThat(this.missing.isDirectlyPresent()).isFalse();
+	}
+
+	@Test
+	public void isMetaPresentReturnsFalse() {
+		assertThat(this.missing.isMetaPresent()).isFalse();
+	}
+
+	@Test
+	public void getDepthReturnsMinusOne() {
+		assertThat(this.missing.getDepth()).isEqualTo(-1);
+	}
+
+	@Test
+	public void getAggregateIndexReturnsMinusOne() {
+		assertThat(this.missing.getAggregateIndex()).isEqualTo(-1);
+	}
+
+	@Test
+	public void getSourceReturnsNull() {
+		assertThat(this.missing.getSource()).isNull();
+	}
+
+	@Test
+	public void getParentReturnsNull() {
+		assertThat(this.missing.getParent()).isNull();
+	}
+
+	@Test
+	public void hasNonDefaultValueThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.hasNonDefaultValue("value"));
+	}
+
+	@Test
+	public void hasDefaultValueThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.hasDefaultValue("value"));
+	}
+
+	@Test
+	public void getByteThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getByte("value"));
+	}
+
+	@Test
+	public void getByteArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getByteArray("value"));
+	}
+
+	@Test
+	public void getBooleanThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getBoolean("value"));
+	}
+
+	@Test
+	public void getBooleanArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getBooleanArray("value"));
+	}
+
+	@Test
+	public void getCharThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getChar("value"));
+	}
+
+	@Test
+	public void getCharArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getCharArray("value"));
+	}
+
+	@Test
+	public void getShortThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getShort("value"));
+	}
+
+	@Test
+	public void getShortArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getShortArray("value"));
+	}
+
+	@Test
+	public void getIntThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(() -> this.missing.getInt("value"));
+	}
+
+	@Test
+	public void getIntArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getIntArray("value"));
+	}
+
+	@Test
+	public void getLongThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getLong("value"));
+	}
+
+	@Test
+	public void getLongArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getLongArray("value"));
+	}
+
+	@Test
+	public void getDoubleThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getDouble("value"));
+	}
+
+	@Test
+	public void getDoubleArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getDoubleArray("value"));
+	}
+
+	@Test
+	public void getFloatThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getFloat("value"));
+	}
+
+	@Test
+	public void getFloatArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getFloatArray("value"));
+	}
+
+	@Test
+	public void getStringThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getString("value"));
+	}
+
+	@Test
+	public void getStringArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getStringArray("value"));
+	}
+
+	@Test
+	public void getClassThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getClass("value"));
+	}
+
+	@Test
+	public void getClassArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getClassArray("value"));
+	}
+
+	@Test
+	public void getEnumThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getEnum("value", TestEnum.class));
+	}
+
+	@Test
+	public void getEnumArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getEnumArray("value", TestEnum.class));
+	}
+
+	@Test
+	public void getAnnotationThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getAnnotation("value", TestAnnotation.class));
+	}
+
+	@Test
+	public void getAnnotationArrayThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.getAnnotationArray("value", TestAnnotation.class));
+	}
+
+	@Test
+	public void getValueReturnsEmpty() {
+		assertThat(this.missing.getValue("value", Integer.class)).isEmpty();
+	}
+
+	@Test
+	public void getDefaultValueReturnsEmpty() {
+		assertThat(this.missing.getDefaultValue("value", Integer.class)).isEmpty();
+	}
+
+	@Test
+	public void synthesizeThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(() -> this.missing.synthesize());
+	}
+
+	@Test
+	public void synthesizeWithPredicateWhenPredicateMatchesThrowsNoSuchElementException() {
+		assertThatNoSuchElementException().isThrownBy(
+				() -> this.missing.synthesize((annotation) -> true));
+	}
+
+	@Test
+	public void synthesizeWithPredicateWhenPredicateDoesNotMatchReturnsEmpty() {
+		assertThat(this.missing.synthesize((annotation) -> false)).isEmpty();
+	}
+
+	@Test
+	public void toStringReturnsString() {
+		assertThat(this.missing.toString()).isEqualTo("(missing)");
+	}
+
+	@Test
+	public void asMapReturnsEmptyMap() {
+		Map<String, Object> map = this.missing.asMap();
+		assertThat(map).isSameAs(Collections.EMPTY_MAP);
+	}
+
+	@Test
+	public void asMapWithFactoryReturnsNewMapFromFactory() {
+		Map<String, Object> map = this.missing.asMap(annotation->new ConcurrentReferenceHashMap<>());
+		assertThat(map).isInstanceOf(ConcurrentReferenceHashMap.class);
+	}
+
+	private static ThrowableTypeAssert<NoSuchElementException> assertThatNoSuchElementException() {
+		return assertThatExceptionOfType(NoSuchElementException.class);
+	}
+
+	private static enum TestEnum {
+		ONE, TWO, THREE
+	}
+
+	@Retention(RetentionPolicy.RUNTIME)
+	private static @interface TestAnnotation {
+
+	}
+
+}