Add defaultApiVersion to WebTestClient

See gh-34919

spring-test/src/main/java/org/springframework/test/web/reactive/server/DefaultWebTestClient.java

@@ -89,6 +89,8 @@ class DefaultWebTestClient implements WebTestClient {
 
 	private final @Nullable MultiValueMap<String, String> defaultCookies;
 
+	private final @Nullable Object defaultApiVersion;
+
 	private final @Nullable ApiVersionInserter apiVersionInserter;
 
 	private final Consumer<EntityExchangeResult<?>> entityResultConsumer;
@@ -104,7 +106,8 @@ class DefaultWebTestClient implements WebTestClient {
 			ClientHttpConnector connector, ExchangeStrategies exchangeStrategies,
 			Function<ClientHttpConnector, ExchangeFunction> exchangeFactory, UriBuilderFactory uriBuilderFactory,
 			@Nullable HttpHeaders headers, @Nullable MultiValueMap<String, String> cookies,
-			@Nullable ApiVersionInserter apiVersionInserter, Consumer<EntityExchangeResult<?>> entityResultConsumer,
+			@Nullable Object defaultApiVersion, @Nullable ApiVersionInserter apiVersionInserter,
+			Consumer<EntityExchangeResult<?>> entityResultConsumer,
 			@Nullable Duration responseTimeout, DefaultWebTestClientBuilder clientBuilder) {
 
 		this.wiretapConnector = new WiretapConnector(connector);
@@ -114,6 +117,7 @@ class DefaultWebTestClient implements WebTestClient {
 		this.uriBuilderFactory = uriBuilderFactory;
 		this.defaultHeaders = headers;
 		this.defaultCookies = cookies;
+		this.defaultApiVersion = defaultApiVersion;
 		this.apiVersionInserter = apiVersionInserter;
 		this.entityResultConsumer = entityResultConsumer;
 		this.responseTimeout = (responseTimeout != null ? responseTimeout : Duration.ofSeconds(5));
@@ -386,9 +390,10 @@ class DefaultWebTestClient implements WebTestClient {
 						if (!this.headers.isEmpty()) {
 							headersToUse.putAll(this.headers);
 						}
-						if (this.apiVersion != null) {
+						Object version = getApiVersionOrDefault();
+						if (version != null) {
 							Assert.state(apiVersionInserter != null, "No ApiVersionInserter configured");
-							apiVersionInserter.insertVersion(this.apiVersion, headersToUse);
+							apiVersionInserter.insertVersion(version, headersToUse);
 						}
 					})
 					.cookies(cookiesToUse -> {
@@ -404,13 +409,18 @@ class DefaultWebTestClient implements WebTestClient {
 
 		private URI initUri() {
 			URI uriToUse = this.uri != null ? this.uri : DefaultWebTestClient.this.uriBuilderFactory.expand("");
-			if (this.apiVersion != null) {
+			Object version = getApiVersionOrDefault();
+			if (version != null) {
 				Assert.state(apiVersionInserter != null, "No ApiVersionInserter configured");
-				uriToUse = apiVersionInserter.insertVersion(this.apiVersion, uriToUse);
+				uriToUse = apiVersionInserter.insertVersion(version, uriToUse);
 			}
 			return uriToUse;
 		}
 
+		private @Nullable Object getApiVersionOrDefault() {
+			return (this.apiVersion != null ? this.apiVersion : DefaultWebTestClient.this.defaultApiVersion);
+		}
+
 	}
 
 

spring-test/src/main/java/org/springframework/test/web/reactive/server/DefaultWebTestClientBuilder.java

@@ -86,6 +86,8 @@ class DefaultWebTestClientBuilder implements WebTestClient.Builder {
 
 	private @Nullable MultiValueMap<String, String> defaultCookies;
 
+	private @Nullable Object defaultApiVersion;
+
 	private @Nullable ApiVersionInserter apiVersionInserter;
 
 	private @Nullable List<ExchangeFilterFunction> filters;
@@ -145,6 +147,7 @@ class DefaultWebTestClientBuilder implements WebTestClient.Builder {
 		}
 		this.defaultCookies = (other.defaultCookies != null ?
 				new LinkedMultiValueMap<>(other.defaultCookies) : null);
+		this.defaultApiVersion = other.defaultApiVersion;
 		this.apiVersionInserter = other.apiVersionInserter;
 		this.filters = (other.filters != null ? new ArrayList<>(other.filters) : null);
 		this.entityResultConsumer = other.entityResultConsumer;
@@ -204,6 +207,12 @@ class DefaultWebTestClientBuilder implements WebTestClient.Builder {
 		return this.defaultCookies;
 	}
 
+	@Override
+	public WebTestClient.Builder defaultApiVersion(Object version) {
+		this.defaultApiVersion = version;
+		return this;
+	}
+
 	@Override
 	public WebTestClient.Builder apiVersionInserter(ApiVersionInserter apiVersionInserter) {
 		this.apiVersionInserter = apiVersionInserter;
@@ -297,7 +306,7 @@ class DefaultWebTestClientBuilder implements WebTestClient.Builder {
 				connectorToUse, exchangeStrategies, exchangeFactory, initUriBuilderFactory(),
 				(this.defaultHeaders != null ? HttpHeaders.readOnlyHttpHeaders(this.defaultHeaders) : null),
 				(this.defaultCookies != null ? CollectionUtils.unmodifiableMultiValueMap(this.defaultCookies) : null),
-				this.apiVersionInserter, this.entityResultConsumer,
+				this.defaultApiVersion, this.apiVersionInserter, this.entityResultConsumer,
 				this.responseTimeout, new DefaultWebTestClientBuilder(this));
 	}
 

spring-test/src/main/java/org/springframework/test/web/reactive/server/WebTestClient.java

@@ -430,6 +430,15 @@ public interface WebTestClient {
 		 */
 		Builder defaultCookies(Consumer<MultiValueMap<String, String>> cookiesConsumer);
 
+		/**
+		 * Global option to specify an API version to add to every request,
+		 * if not already set.
+		 * @param version the version to use
+		 * @return this builder
+		 * @since 7.0
+		 */
+		Builder defaultApiVersion(Object version);
+
 		/**
 		 * Configure an {@link ApiVersionInserter} to abstract how an API version
 		 * specified via {@link RequestHeadersSpec#apiVersion(Object)}