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Java DSL for easy testing of REST services
/*
* Copyright 2019 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 io.restassured.config;
import io.restassured.http.ContentType;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.Validate;
import java.nio.charset.Charset;
import java.util.*;
import static io.restassured.internal.common.assertion.AssertParameter.notNull;
import static org.apache.commons.lang3.StringUtils.trim;
/**
* Allows you to specify configuration for the decoder.
*/
public class DecoderConfig implements Config {
private static final boolean DEFAULT_NO_WRAP_FOR_INFLATE_ENCODED_STREAMS = false;
private static final String UTF_8 = "UTF-8";
private static final Map DEFAULT_CHARSET_FOR_CONTENT_TYPE = new HashMap() {{
put(ContentType.JSON.toString(), UTF_8);
put("text/json", UTF_8);
}};
private final String defaultContentCharset;
private final List contentDecoders;
private final Map contentTypeToDefaultCharset;
private final boolean useNoWrapForInflateDecoding;
private final boolean isUserConfigured;
/**
* Configure the decoder config to use the default charset as specified by {@link java.nio.charset.Charset#defaultCharset()} for content decoding.
*/
public DecoderConfig() {
this(Charset.defaultCharset().toString(), DEFAULT_NO_WRAP_FOR_INFLATE_ENCODED_STREAMS, false, DEFAULT_CHARSET_FOR_CONTENT_TYPE, defaultContentEncoders());
}
/**
* Configure the decoder config to use supplied defaultContentCharset for content decoding if a charset is not specified in the response.
*
* @param defaultContentCharset The charset to use if not specifically specified in the response.
*/
public DecoderConfig(String defaultContentCharset) {
this(defaultContentCharset, DEFAULT_NO_WRAP_FOR_INFLATE_ENCODED_STREAMS, true, DEFAULT_CHARSET_FOR_CONTENT_TYPE, defaultContentEncoders());
}
/**
* Configure the decoder config to use {@link java.nio.charset.Charset#defaultCharset()} for content decoding.
* Also specify the content decoders that will be presented to the server when making a request (using the Accept-Encoding header).
* If the server supports any of these encodings then REST Assured will automatically perform decoding of the response accordingly.
*
* By default {@link ContentDecoder#GZIP} and {@link ContentDecoder#DEFLATE} are used.
*
*
* @param contentDecoder The first content decoder
* @param additionalContentDecoders Optional additional content decoders
*/
public DecoderConfig(ContentDecoder contentDecoder, ContentDecoder... additionalContentDecoders) {
this(Charset.defaultCharset().toString(), DEFAULT_NO_WRAP_FOR_INFLATE_ENCODED_STREAMS, true, DEFAULT_CHARSET_FOR_CONTENT_TYPE, merge(contentDecoder, additionalContentDecoders));
}
private DecoderConfig(String defaultContentCharset, boolean useNoWrapForInflateDecoding, boolean isUserConfigured,
Map contentTypeToDefaultCharset, ContentDecoder... contentDecoders) {
this(defaultContentCharset, useNoWrapForInflateDecoding, isUserConfigured,
contentDecoders == null ? Collections.emptyList() : Arrays.asList(contentDecoders), contentTypeToDefaultCharset);
}
private DecoderConfig(String defaultContentCharset, boolean useNoWrapForInflateDecoding, boolean isUserConfigured, List contentDecoders, Map contentTypeToDefaultCharset) {
Validate.notBlank(defaultContentCharset, "Default decoder content charset to cannot be blank");
this.contentTypeToDefaultCharset = new HashMap(contentTypeToDefaultCharset);
this.defaultContentCharset = defaultContentCharset;
this.contentDecoders = Collections.unmodifiableList(contentDecoders == null ? Collections.emptyList() : contentDecoders);
this.useNoWrapForInflateDecoding = useNoWrapForInflateDecoding;
this.isUserConfigured = isUserConfigured;
}
/**
* Specify the default charset to use for the specific content-type if it's not specified in the content-type header explicitly
*
* @param charset The charset to use as default (unless specified explicitly)
* @param contentType The content-type
* @return A new instance of {@link DecoderConfig}
*/
public DecoderConfig defaultCharsetForContentType(String charset, String contentType) {
notNull(charset, "Charset");
notNull(contentType, "ContentType");
Map map = new HashMap(contentTypeToDefaultCharset);
map.put(trim(contentType).toLowerCase(), trim(charset));
return new DecoderConfig(charset, useNoWrapForInflateDecoding, true, contentDecoders, map);
}
/**
* Specify the default charset to use for the specific content-type if it's not specified in the content-type header explicitly
*
* @param charset The charset to use as default (unless specified explicitly)
* @param contentType The content-type
* @return A new instance of {@link DecoderConfig}
*/
public DecoderConfig defaultCharsetForContentType(Charset charset, String contentType) {
notNull(charset, "Charset");
return defaultCharsetForContentType(charset.toString(), contentType);
}
/**
* Specify the default charset to use for the specific content-type if it's not specified in the content-type header explicitly
*
* @param charset The charset to use as default (unless specified explicitly)
* @param contentType The content-type
* @return A new instance of {@link DecoderConfig}
*/
public DecoderConfig defaultCharsetForContentType(Charset charset, ContentType contentType) {
notNull(charset, "Charset");
return defaultCharsetForContentType(charset.toString(), contentType);
}
/**
* Specify the default charset to use for the specific content-type if it's not specified in the content-type header explicitly
*
* @param charset The charset to use as default (unless specified explicitly)
* @param contentType The content-type
* @return A new instance of {@link DecoderConfig}
*/
public DecoderConfig defaultCharsetForContentType(String charset, ContentType contentType) {
notNull(charset, "Charset");
notNull(contentType, ContentType.class);
Map map = new HashMap(contentTypeToDefaultCharset);
for (String ct : contentType.getContentTypeStrings()) {
map.put(ct.toLowerCase(), trim(charset));
}
return new DecoderConfig(charset, useNoWrapForInflateDecoding, true, contentDecoders, map);
}
/**
* @return The default charset for a specific content-type. It will have precedence over {@link #defaultContentCharset()}.
*/
public String defaultCharsetForContentType(String contentType) {
if (StringUtils.isEmpty(contentType)) {
return defaultContentCharset();
}
String charset = contentTypeToDefaultCharset.get(trim(contentType).toLowerCase());
if (charset == null) {
return defaultContentCharset();
}
return charset;
}
/**
* @return A map that contains default charset for a specific content-type. It will have precedence over {@link #defaultContentCharset()}.
*/
public String defaultCharsetForContentType(ContentType contentType) {
if (contentType == null) {
return defaultContentCharset();
}
return defaultCharsetForContentType(contentType.toString());
}
/**
* @return A map that contains default charset for a specific content-type. It will have precedence over {@link #defaultContentCharset()}.
*/
public boolean hasDefaultCharsetForContentType(String contentType) {
return !StringUtils.isBlank(contentType) && contentTypeToDefaultCharset.containsKey(trim(contentType).toLowerCase());
}
/**
* @return The configured default content charset that'll be used by REST Assured if no charset is specified in the response.
*/
public String defaultContentCharset() {
return defaultContentCharset;
}
/**
* @return The configured content decoders.
*/
public List contentDecoders() {
return contentDecoders;
}
/**
* If the parameter 'nowrap' is true then the ZLIB header and checksum fields will not be used. This provides compatibility with the
* compression format used by both GZIP and PKZIP.
*
* Note: When using the 'nowrap' option it is also necessary to provide
* an extra "dummy" byte as input. This is required by the ZLIB native
* library in order to support certain optimizations.
*
* Setting no wrap to true is required when communicating with servers not using RFC 1950 (such as PHP which uses RFC 1951).
* See stackoverflow for more details.
*
* Default is {@value DecoderConfig#DEFAULT_NO_WRAP_FOR_INFLATE_ENCODED_STREAMS}.
*
* @param nowrap if true then support GZIP compatible compression
* @return A new instance of the DecoderConfig.
*/
public DecoderConfig useNoWrapForInflateDecoding(boolean nowrap) {
return new DecoderConfig(defaultContentCharset, nowrap, true, contentDecoders, contentTypeToDefaultCharset);
}
/**
* @return true if no wrap should be used for inflate encoded streams.
* @see #useNoWrapForInflateDecoding(boolean)
*/
public boolean shouldUseNoWrapForInflateDecoding() {
return useNoWrapForInflateDecoding;
}
/**
* Specify the default charset of the content in the response that's assumed if no charset is explicitly specified in the response.
*
* @param charset The expected charset
* @return A new instance of the DecoderConfig.
*/
@SuppressWarnings("UnusedDeclaration")
public DecoderConfig defaultContentCharset(String charset) {
return new DecoderConfig(charset, useNoWrapForInflateDecoding, true, contentDecoders, contentTypeToDefaultCharset);
}
/**
* Specify the default charset of the content in the response that's assumed if no charset is explicitly specified in the response.
*
* @param charset The expected charset
* @return A new instance of the DecoderConfig.
*/
@SuppressWarnings("UnusedDeclaration")
public DecoderConfig defaultContentCharset(Charset charset) {
String charsetAsString = notNull(charset, Charset.class).toString();
return new DecoderConfig(charsetAsString, useNoWrapForInflateDecoding, true, contentDecoders, contentTypeToDefaultCharset);
}
/**
* Specify the content decoders that will be presented to the server when making a request (using the Accept-Encoding header).
* If the server supports any of these encodings then REST Assured will automatically perform decoding of the response accordingly.
*
* By default {@link ContentDecoder#GZIP} and {@link ContentDecoder#DEFLATE} are used.
*
*
* @param contentDecoder The first content decoder
* @param additionalContentDecoders Optional additional content decoders
* @return A new instance of the DecoderConfig.
*/
public DecoderConfig contentDecoders(ContentDecoder contentDecoder, ContentDecoder... additionalContentDecoders) {
return new DecoderConfig(defaultContentCharset, useNoWrapForInflateDecoding, true, contentTypeToDefaultCharset, merge(contentDecoder, additionalContentDecoders));
}
/**
* Specify that no content decoders should be used by REST Assured.
*
* @return A new instance of the DecoderConfig.
* @see #contentDecoders(DecoderConfig.ContentDecoder, DecoderConfig.ContentDecoder...)
*/
public DecoderConfig noContentDecoders() {
return new DecoderConfig(defaultContentCharset, useNoWrapForInflateDecoding, true, contentTypeToDefaultCharset);
}
/**
* @return A static way to create a new DecoderConfig instance without calling "new" explicitly. Mainly for syntactic sugar.
*/
public static DecoderConfig decoderConfig() {
return new DecoderConfig();
}
/**
* Syntactic sugar.
*
* @return The same decoder config instance.
*/
public DecoderConfig and() {
return this;
}
/**
* Syntactic sugar.
*
* @return The same decoder config instance.
*/
public DecoderConfig with() {
return this;
}
private static ContentDecoder[] defaultContentEncoders() {
return new ContentDecoder[]{ContentDecoder.GZIP, ContentDecoder.DEFLATE};
}
private static ContentDecoder[] merge(ContentDecoder contentDecoder, ContentDecoder[] additionalContentDecoders) {
Validate.notNull(contentDecoder, "Content decoder cannot be null");
final ContentDecoder[] contentDecoders;
if (additionalContentDecoders == null || additionalContentDecoders.length == 0) {
contentDecoders = new ContentDecoder[]{contentDecoder};
} else {
contentDecoders = new ContentDecoder[additionalContentDecoders.length + 1];
contentDecoders[0] = contentDecoder;
System.arraycopy(additionalContentDecoders, 0, contentDecoders, 1, additionalContentDecoders.length);
}
return contentDecoders;
}
public boolean isUserConfigured() {
return isUserConfigured;
}
/**
* Predefined content encoders in REST Assured. Will also automatically specify the Accept-Encoder header.
*/
public enum ContentDecoder {
/**
* GZIP compression support for both requests and responses.
*/
GZIP, DEFLATE
}
}