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/*
* Fixture Monkey
*
* Copyright (c) 2021-present NAVER Corp.
*
* 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 com.navercorp.fixturemonkey.customizer;
import static com.navercorp.fixturemonkey.Constants.DEFAULT_ELEMENT_MAX_SIZE;
import static com.navercorp.fixturemonkey.Constants.DEFAULT_ELEMENT_MIN_SIZE;
import static com.navercorp.fixturemonkey.Constants.NO_OR_ALL_INDEX_INTEGER_VALUE;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.function.Consumer;
import java.util.function.Predicate;
import java.util.function.Supplier;
import java.util.stream.IntStream;
import javax.annotation.Nullable;
import org.apiguardian.api.API;
import org.apiguardian.api.API.Status;
import com.navercorp.fixturemonkey.Constants;
import com.navercorp.fixturemonkey.api.lazy.LazyArbitrary;
import com.navercorp.fixturemonkey.customizer.InnerSpecState.ContainerInfoHolder;
import com.navercorp.fixturemonkey.customizer.InnerSpecState.FilterHolder;
import com.navercorp.fixturemonkey.customizer.InnerSpecState.ManipulatorHolderSet;
import com.navercorp.fixturemonkey.customizer.InnerSpecState.NodeResolverObjectHolder;
import com.navercorp.fixturemonkey.tree.CompositeNodeResolver;
import com.navercorp.fixturemonkey.tree.ContainerElementPredicate;
import com.navercorp.fixturemonkey.tree.DefaultNodeResolver;
import com.navercorp.fixturemonkey.tree.IdentityNodeResolver;
import com.navercorp.fixturemonkey.tree.NodeAllElementPredicate;
import com.navercorp.fixturemonkey.tree.NodeElementPredicate;
import com.navercorp.fixturemonkey.tree.NodeKeyPredicate;
import com.navercorp.fixturemonkey.tree.NodeResolver;
import com.navercorp.fixturemonkey.tree.NodeValuePredicate;
import com.navercorp.fixturemonkey.tree.PropertyNameNodePredicate;
/**
* A type-independent specification for configuring nested properties.
*
* Provides methods for setting configuration for nested properties, and can be particularly
* useful for configuring map-type properties.
*
*
* Instances of this class can be reused to consistently and easily configure nested properties.
*
*/
@SuppressWarnings("UnusedReturnValue")
@API(since = "0.4.0", status = Status.MAINTAINED)
public final class InnerSpec {
private static final int FIRST_MANIPULATOR_SEQUENCE = 0;
private final int sequence;
private final NodeResolver treePathResolver;
private final InnerSpecState state;
private final List innerSpecs;
private int entrySize = 0;
private int manipulateSize = 0;
/**
* Constructs a new {@code InnerSpec} instance that refers to the root property.
*
* Can be further configured using methods provided by the class.
*
*/
public InnerSpec() {
this(FIRST_MANIPULATOR_SEQUENCE, IdentityNodeResolver.INSTANCE, new InnerSpecState(), new ArrayList<>());
}
private InnerSpec(int sequence, NodeResolver treePathResolver, InnerSpecState state, List innerSpecs) {
this.sequence = sequence;
this.treePathResolver = treePathResolver;
this.state = state;
this.innerSpecs = innerSpecs;
}
/**
* Configures the currently referred property further
* with the specifications provided inside the given {@link InnerSpec} object
*
* @param innerSpec An instance of {@link InnerSpec} containing the specifications
* to be applied to the currently referred property.
*/
public InnerSpec inner(InnerSpec innerSpec) {
InnerSpec appendInnerSpec = newAppendNodeResolver(innerSpec, this.treePathResolver);
this.innerSpecs.add(appendInnerSpec);
return this;
}
/**
* Sets the size of the currently referred container property.
* {@code minSize} should be less than or equal to {@code maxSize}.
*
* @param minSize minimum size of the container to generate
* @param maxSize maximum size of the container to generate
*/
public InnerSpec size(int minSize, int maxSize) {
if (minSize > maxSize) {
throw new IllegalArgumentException("should be min > max, min : " + minSize + " max : " + maxSize);
}
this.state.setContainerInfoHolder(
new ContainerInfoHolder(this.sequence + manipulateSize, this.treePathResolver, minSize, maxSize)
);
manipulateSize++;
return this;
}
/**
* Sets the size of the currently referred container property.
*
* @param size size of the container to generate
*/
public InnerSpec size(int size) {
return this.size(size, size);
}
/**
* Sets the size of the currently referred container property.
* The size of container property would be between {@code minSize} and
* {@code minSize} + {@link Constants#DEFAULT_ELEMENT_MAX_SIZE}
*
* @param minSize minimum size of the container to generate
*/
public InnerSpec minSize(int minSize) {
return this.size(minSize, minSize + DEFAULT_ELEMENT_MAX_SIZE);
}
/**
* Sets the size of the currently referred container property.
* The size of container property would be between
* max(0, {@code maxSize} - {@link Constants#DEFAULT_ELEMENT_MAX_SIZE}) and {@code maxSize}
*
* @param maxSize maximum size of the container to generate
*/
public InnerSpec maxSize(int maxSize) {
return this.size(Math.max(DEFAULT_ELEMENT_MIN_SIZE, maxSize - DEFAULT_ELEMENT_MAX_SIZE), maxSize);
}
/**
* Sets a key in the currently referred map property.
*
* @param key value of the map key to set
*/
public InnerSpec key(Object key) {
entrySize++;
setMapKey(key);
return this;
}
/**
* Sets multiple keys in the currently referred map property from a Collection.
*
* @param keys The Collection of keys to set in the map. Can be empty.
*/
public InnerSpec keys(Collection keys) {
keys.forEach(this::key);
return this;
}
/**
* Sets multiple keys in the currently referred map property.
*
* @param keys The keys to set in the map. Can be empty.
*/
public InnerSpec keys(Object... keys) {
Arrays.stream(keys).forEach(this::key);
return this;
}
/**
* Sets a nested map key within the currently referred map property.
*
* @param consumer a consumer function that takes an {@code InnerSpec} instance as an argument and configures
* the nested map key
*/
public InnerSpec key(Consumer consumer) {
entrySize++;
setMapKey(consumer);
return this;
}
/**
* Sets a value in the currently referred map property from a Collection.
*
* @param values The Collection of values to set in the map. Can be empty.
*/
public InnerSpec values(Collection values) {
values.forEach(this::value);
return this;
}
/**
* Sets a value in the currently referred map property.
*
* @param value value of the map value to set
*/
public InnerSpec value(Object value) {
entrySize++;
setMapValue(value);
return this;
}
/**
* Sets multiple values in the currently referred map property.
*
* @param values The values to be added to the map. Can be empty.
*/
public InnerSpec values(Object... values) {
Arrays.stream(values).forEach(this::value);
return this;
}
/**
* Sets a nested map value within the currently referred map property.
*
* @param consumer a consumer function that takes an {@code InnerSpec} instance as an argument and configures
* the nested map value
*/
public InnerSpec value(Consumer consumer) {
entrySize++;
setMapValue(consumer);
return this;
}
/**
* Sets an entry in the currently referred map property.
*
* @param key value of the entry key to set
* @param value value of the entry value to set
*/
public InnerSpec entry(Object key, @Nullable Object value) {
entrySize++;
setMapEntry(key, value);
return this;
}
/**
* Sets multiple key-value pairs in the map from a Collection.
*
* @param entries The entries to be added to the map. Should be entered in key, value order. Can be empty.
*/
public InnerSpec entries(Collection entries) {
if (entries.size() % 2 != 0) {
throw new IllegalArgumentException("key-value pairs for the Map should be entered");
}
IntStream.range(0, entries.size())
.filter(i -> i % 2 == 0)
.forEach(i -> entry(entries.toArray()[i], entries.toArray()[i + 1]));
return this;
}
/**
* Sets multiple key-value pairs in the map.
*
* @param entries The entries to be added to the map. Should be entered in key, value order. Can be empty.
*/
public InnerSpec entries(Object... entries) {
if (entries.length % 2 != 0) {
throw new IllegalArgumentException("key-value pairs for the Map should be entered");
}
IntStream.range(0, entries.length)
.filter(i -> i % 2 == 0)
.forEach(i -> entry(entries[i], entries[i + 1]));
return this;
}
/**
* Sets an entry with a specified key within the currently referred map property,
* and applies a consumer function to configure the value.
*
* @param key value of the map key to set
* @param consumer a consumer function that takes an {@code InnerSpec} instance as an argument and configures
* the nested map value
*/
public InnerSpec entry(Object key, Consumer consumer) {
entrySize++;
setMapEntry(key, consumer);
return this;
}
/**
* Sets an entry with a specified value within the currently referred map property,
* and applies a consumer function to configure the key.
*
* @param consumer a consumer function that takes an {@code InnerSpec} instance as an argument and configures
* the nested map key
* @param value value of the map value to set
*/
public InnerSpec entry(Consumer consumer, @Nullable Object value) {
entrySize++;
setMapEntry(consumer, value);
return this;
}
/**
* Sets a key in the currently referred map property with a key obtained lazily from the given supplier.
*
* @param supplier a supplier function that provides the value of the map key to set.
*/
public InnerSpec keyLazy(Supplier supplier) {
entrySize++;
setMapKey(supplier);
return this;
}
/**
* Sets a value in the currently referred map property with a value obtained lazily from the given supplier.
*
* @param supplier a supplier function that provides the value of the map value to set.
*/
public InnerSpec valueLazy(Supplier supplier) {
entrySize++;
setMapValue(supplier);
return this;
}
/**
* Sets an entry in the currently referred map property with a key and value
* obtained lazily from the given suppliers.
*
* @param keySupplier a supplier function that provides the value of the map key to set.
* @param valueSupplier a function that provides the value of the map value to set.
*/
public InnerSpec entryLazy(Supplier keySupplier, Supplier valueSupplier) {
entrySize++;
LazyArbitrary keyLazyArbitrary = LazyArbitrary.lazy(keySupplier);
LazyArbitrary valueLazyArbitrary = LazyArbitrary.lazy(valueSupplier);
setMapEntry(keyLazyArbitrary, valueLazyArbitrary);
return this;
}
/**
* Sets every key in the currently referred map property using a consumer function.
*
* @param consumer a consumer function that takes an {@code InnerSpec} instance as an argument and configures
* each key in the map property.
*/
public InnerSpec allKey(Consumer consumer) {
setMapAllKey(consumer);
return this;
}
/**
* Sets every key in the currently referred map property with a key obtained lazily from the given supplier.
*
* @param supplier a supplier function that provides the value of the map keys to set.
*/
public InnerSpec allKeyLazy(Supplier supplier) {
LazyArbitrary lazyArbitrary = LazyArbitrary.lazy(supplier);
setMapAllKey(lazyArbitrary);
return this;
}
/**
* Sets every value in the currently referred map property.
*
* @param value value of the map value to set
*/
public InnerSpec allValue(@Nullable Object value) {
setMapAllValue(value);
return this;
}
/**
* Sets every value in the currently referred map property using a consumer function.
*
* @param consumer a consumer function that takes an {@code InnerSpec} instance as an argument and configures
* each value in the map property.
*/
public InnerSpec allValue(Consumer consumer) {
setMapAllValue(consumer);
return this;
}
/**
* Sets every value in the currently referred map property with a value obtained lazily from the given supplier.
*
* @param supplier a supplier function that provides the value of the map values to set.
*/
public InnerSpec allValueLazy(Supplier supplier) {
LazyArbitrary lazyArbitrary = LazyArbitrary.lazy(supplier);
setMapAllValue(lazyArbitrary);
return this;
}
/**
* Sets every entry in the currently referred map property with a key
* obtained lazily from the given supplier and a specified value.
*
* @param keySupplier a supplier function that provides the value of the map keys to set.
* @param value the value to set
*/
public InnerSpec allEntry(Supplier keySupplier, Object value) {
LazyArbitrary keyLazyArbitrary = LazyArbitrary.lazy(keySupplier);
setMapAllKey(keyLazyArbitrary);
setMapAllValue(value);
return this;
}
/**
* Sets every entry in the currently referred map property with a key and value
* obtained lazily from the given suppliers.
*
* @param keySupplier a supplier function that provides the value of the map keys to set.
* @param valueSupplier a supplier function that provides the value of the map values to set.
*/
public InnerSpec allEntryLazy(Supplier keySupplier, Supplier valueSupplier) {
return this.allEntry(keySupplier, valueSupplier);
}
/**
* Sets an element at the specified index within the currently referred container property.
*
* @param index index of the element to set
* @param value value of the element to set
*/
public InnerSpec listElement(int index, @Nullable Object value) {
setListElement(index, value);
return this;
}
/**
* Sets an element at the specified index within the currently referred container property
* using a consumer function.
*
* @param index index of the element to set
* @param consumer a consumer function that takes an {@code InnerSpec} instance as an argument and configures
* the element.
*/
public InnerSpec listElement(int index, Consumer consumer) {
setListElement(index, consumer);
return this;
}
/**
* Sets every element within the currently referred container property.
*
* @param value value of the elements to set
*/
public InnerSpec allListElement(@Nullable Object value) {
return listElement(NO_OR_ALL_INDEX_INTEGER_VALUE, value);
}
/**
* Sets every element within the currently referred container property using a consumer function.
*
* @param consumer a consumer function that takes an {@code InnerSpec} instance as an argument and configures
* each element.
*/
public InnerSpec allListElement(Consumer consumer) {
return listElement(NO_OR_ALL_INDEX_INTEGER_VALUE, consumer);
}
/**
* Sets a property within the currently referred property.
*
* @param propertyName name of the property to set
* (only string-formatted property names are allowed, and expressions are not supported)
* @param value value of the property to set
*/
public InnerSpec property(String propertyName, @Nullable Object value) {
setPropertyValue(propertyName, value);
return this;
}
/**
* Sets a property within the currently referred property using a consumer function.
*
* @param propertyName name of the property to set
* (only string-formatted property names are allowed, and expressions are not supported)
* @param consumer a consumer function that takes an {@code InnerSpec} instance as an argument and configures
* the nested property.
*/
public InnerSpec property(String propertyName, Consumer consumer) {
setPropertyValue(propertyName, consumer);
return this;
}
/**
* Sets the post-condition for the currently referred property.
*
* @param type type of the property to set
* @param filter a predicate function that determines the post-condition of the property
*/
public InnerSpec postCondition(Class type, Predicate filter) {
this.state.setFilterHolder(new FilterHolder(manipulateSize++, this.treePathResolver, type, filter));
return this;
}
public ManipulatorSet getManipulatorSet(MonkeyManipulatorFactory monkeyManipulatorFactory) {
ManipulatorHolderSet manipulatorHolderSet = traverse(this);
return monkeyManipulatorFactory.newManipulatorSet(manipulatorHolderSet);
}
private InnerSpec newAppendNodeResolver(InnerSpec innerSpec, NodeResolver nodeResolver) {
InnerSpec newSpec = new InnerSpec(
innerSpec.sequence,
innerSpec.treePathResolver,
innerSpec.state.withPrefix(nodeResolver),
new ArrayList<>()
);
for (InnerSpec spec : innerSpec.innerSpecs) {
newSpec.innerSpecs.add(newAppendNodeResolver(spec, nodeResolver));
}
return newSpec;
}
private void setMapKey(Object mapKey) {
if (mapKey == null) {
throw new IllegalArgumentException(
"Map key cannot be null."
);
}
NodeResolver nextKeyNodeResolver = new CompositeNodeResolver(
this.treePathResolver,
new DefaultNodeResolver(new NodeElementPredicate(entrySize - 1)),
new DefaultNodeResolver(new NodeKeyPredicate())
);
setValue(nextKeyNodeResolver, mapKey);
}
private void setMapAllKey(Object mapKey) {
if (mapKey == null) {
throw new IllegalArgumentException(
"Map mapKey cannot be null."
);
}
NodeResolver nextKeyNodeResolver = new CompositeNodeResolver(
this.treePathResolver,
new DefaultNodeResolver(new NodeAllElementPredicate()),
new DefaultNodeResolver(new NodeKeyPredicate())
);
setValue(nextKeyNodeResolver, mapKey);
}
private void setMapValue(@Nullable Object mapValue) {
NodeResolver nextValueNodeResolver = new CompositeNodeResolver(
this.treePathResolver,
new DefaultNodeResolver(new NodeElementPredicate(entrySize - 1)),
new DefaultNodeResolver(new NodeValuePredicate())
);
setValue(nextValueNodeResolver, mapValue);
}
private void setMapAllValue(@Nullable Object mapValue) {
NodeResolver nextValueNodeResolver = new CompositeNodeResolver(
this.treePathResolver,
new DefaultNodeResolver(new NodeAllElementPredicate()),
new DefaultNodeResolver(new NodeValuePredicate())
);
setValue(nextValueNodeResolver, mapValue);
}
private void setMapEntry(Object key, @Nullable Object value) {
setMapKey(key);
setMapValue(value);
}
private void setPropertyValue(String propertyName, @Nullable Object value) {
CompositeNodeResolver nextNodeResolver = new CompositeNodeResolver(
this.treePathResolver,
new DefaultNodeResolver(new PropertyNameNodePredicate(propertyName))
);
setValue(nextNodeResolver, value);
}
private void setListElement(int index, @Nullable Object value) {
CompositeNodeResolver nextNodeResolver = new CompositeNodeResolver(
this.treePathResolver,
new DefaultNodeResolver(new ContainerElementPredicate(index))
);
setValue(nextNodeResolver, value);
}
@SuppressWarnings("unchecked")
private void setValue(NodeResolver nextNodeResolver, @Nullable Object nextValue) {
int nextSequence = this.sequence + manipulateSize;
if (nextValue instanceof InnerSpec) {
InnerSpec prefix = new InnerSpec(
nextSequence,
nextNodeResolver,
new InnerSpecState(),
new ArrayList<>()
);
this.innerSpecs.add(prefix.inner((InnerSpec)nextValue));
manipulateSize++;
return;
}
if (nextValue instanceof Consumer) {
Consumer consumer = (Consumer)nextValue;
InnerSpec nextInnerSpec = new InnerSpec(
nextSequence,
nextNodeResolver,
new InnerSpecState(),
new ArrayList<>()
);
consumer.accept(nextInnerSpec);
this.innerSpecs.add(nextInnerSpec);
manipulateSize++;
return;
}
InnerSpecState nextInnerSpecState = new InnerSpecState();
nextInnerSpecState.setObjectHolder(
new NodeResolverObjectHolder(
nextSequence,
nextNodeResolver,
nextValue
)
);
InnerSpec nextInnerSpec = new InnerSpec(
nextSequence,
nextNodeResolver,
nextInnerSpecState,
new ArrayList<>()
);
this.innerSpecs.add(nextInnerSpec);
manipulateSize++;
}
private ManipulatorHolderSet traverse(InnerSpec innerSpec) {
List nodeResolverObjectHolders = new ArrayList<>();
List containerInfoManipulators = new ArrayList<>();
List postConditionManipulators = new ArrayList<>();
if (innerSpec.state.getObjectHolder() != null) {
nodeResolverObjectHolders.add(innerSpec.state.getObjectHolder());
}
if (innerSpec.state.getContainerInfoHolder() != null) {
containerInfoManipulators.add(innerSpec.state.getContainerInfoHolder());
}
if (innerSpec.state.getFilterHolder() != null) {
postConditionManipulators.add(innerSpec.state.getFilterHolder());
}
for (InnerSpec spec : innerSpec.innerSpecs) {
ManipulatorHolderSet traversed = traverse(spec);
nodeResolverObjectHolders.addAll(traversed.getNodeResolverObjectHolders());
containerInfoManipulators.addAll(traversed.getContainerInfoManipulators());
postConditionManipulators.addAll(traversed.getPostConditionManipulators());
}
return new ManipulatorHolderSet(
nodeResolverObjectHolders,
containerInfoManipulators,
postConditionManipulators
);
}
}