@Test
public void getBasicTypeMirror() {
assertThat(TypeName.get(getMirror(Object.class))).isEqualTo(ClassName.get(Object.class));
assertThat(TypeName.get(getMirror(Charset.class))).isEqualTo(ClassName.get(Charset.class));
assertThat(TypeName.get(getMirror(AbstractTypesTest.class)))
.isEqualTo(ClassName.get(AbstractTypesTest.class));
}
@Test
public void wildcardMirrorSuperType() throws Exception {
Types types = getTypes();
Elements elements = getElements();
TypeMirror string = elements.getTypeElement(String.class.getName()).asType();
WildcardType wildcard = types.getWildcardType(null, string);
TypeName type = TypeName.get(wildcard);
assertThat(type.toString()).isEqualTo("? super java.lang.String");
}
@Test
public void wildcardMirrorExtendsType() throws Exception {
Types types = getTypes();
Elements elements = getElements();
TypeMirror charSequence = elements.getTypeElement(CharSequence.class.getName()).asType();
WildcardType wildcard = types.getWildcardType(charSequence, null);
TypeName type = TypeName.get(wildcard);
assertThat(type.toString()).isEqualTo("? extends java.lang.CharSequence");
}
@Test
public void getParameterizedTypeMirror() {
DeclaredType setType =
getTypes().getDeclaredType(getElement(Set.class), getMirror(Object.class));
assertThat(TypeName.get(setType))
.isEqualTo(ParameterizedTypeName.get(ClassName.get(Set.class), ClassName.OBJECT));
}
@Test
public void getNullTypeMirror() {
try {
TypeName.get(getTypes().getNullType());
fail();
} catch (IllegalArgumentException expected) {
}
}
@Test
public void getTypeVariableTypeMirror() {
List<? extends TypeParameterElement> typeVariables =
getElement(Parameterized.class).getTypeParameters();
// Members of converted types use ClassName and not Class<?>.
ClassName number = ClassName.get(Number.class);
ClassName runnable = ClassName.get(Runnable.class);
ClassName serializable = ClassName.get(Serializable.class);
assertThat(TypeName.get(typeVariables.get(0).asType()))
.isEqualTo(TypeVariableName.get("Simple"));
assertThat(TypeName.get(typeVariables.get(1).asType()))
.isEqualTo(TypeVariableName.get("ExtendsClass", number));
assertThat(TypeName.get(typeVariables.get(2).asType()))
.isEqualTo(TypeVariableName.get("ExtendsInterface", runnable));
assertThat(TypeName.get(typeVariables.get(3).asType()))
.isEqualTo(TypeVariableName.get("ExtendsTypeVariable", TypeVariableName.get("Simple")));
assertThat(TypeName.get(typeVariables.get(4).asType()))
.isEqualTo(TypeVariableName.get("Intersection", number, runnable));
assertThat(TypeName.get(typeVariables.get(5).asType()))
.isEqualTo(TypeVariableName.get("IntersectionOfInterfaces", runnable, serializable));
assertThat(((TypeVariableName) TypeName.get(typeVariables.get(4).asType())).bounds)
.containsExactly(number, runnable);
}
@Test
public void getPrimitiveTypeMirror() {
assertThat(TypeName.get(getTypes().getPrimitiveType(TypeKind.BOOLEAN)))
.isEqualTo(TypeName.BOOLEAN);
assertThat(TypeName.get(getTypes().getPrimitiveType(TypeKind.BYTE))).isEqualTo(TypeName.BYTE);
assertThat(TypeName.get(getTypes().getPrimitiveType(TypeKind.SHORT))).isEqualTo(TypeName.SHORT);
assertThat(TypeName.get(getTypes().getPrimitiveType(TypeKind.INT))).isEqualTo(TypeName.INT);
assertThat(TypeName.get(getTypes().getPrimitiveType(TypeKind.LONG))).isEqualTo(TypeName.LONG);
assertThat(TypeName.get(getTypes().getPrimitiveType(TypeKind.CHAR))).isEqualTo(TypeName.CHAR);
assertThat(TypeName.get(getTypes().getPrimitiveType(TypeKind.FLOAT))).isEqualTo(TypeName.FLOAT);
assertThat(TypeName.get(getTypes().getPrimitiveType(TypeKind.DOUBLE)))
.isEqualTo(TypeName.DOUBLE);
}
@Test
public void getTypeVariableTypeMirrorRecursive() {
TypeMirror typeMirror = getElement(Recursive.class).asType();
ParameterizedTypeName typeName = (ParameterizedTypeName) TypeName.get(typeMirror);
String className = Recursive.class.getCanonicalName();
assertThat(typeName.toString()).isEqualTo(className + "<T>");
TypeVariableName typeVariableName = (TypeVariableName) typeName.typeArguments.get(0);
try {
typeVariableName.bounds.set(0, null);
fail("Expected UnsupportedOperationException");
} catch (UnsupportedOperationException expected) {
}
assertThat(typeVariableName.toString()).isEqualTo("T");
assertThat(typeVariableName.bounds.toString())
.isEqualTo("[java.util.Map<java.util.List<T>, java.util.Set<T[]>>]");
}
@Test
public void getErrorType() {
ErrorType errorType =
new DeclaredTypeAsErrorType(getTypes().getDeclaredType(getElement(Set.class)));
assertThat(TypeName.get(errorType)).isEqualTo(ClassName.get(Set.class));
}
@Test
public void wildcardMirrorNoBounds() throws Exception {
WildcardType wildcard = getTypes().getWildcardType(null, null);
TypeName type = TypeName.get(wildcard);
assertThat(type.toString()).isEqualTo("?");
}
@Test
public void getVoidTypeMirror() {
assertThat(TypeName.get(getTypes().getNoType(TypeKind.VOID))).isEqualTo(TypeName.VOID);
}
@Test
public void getArrayTypeMirror() {
assertThat(TypeName.get(getTypes().getArrayType(getMirror(Object.class))))
.isEqualTo(ArrayTypeName.of(ClassName.OBJECT));
}