[Python] Add echo_api test object serialization for multipart requests (#18176)

* [python] echo add test object serialization for multipart requests

* [echo api] update samples

* [echo api] update samples

samples/client/echo_api/java/native/src/main/java/org/openapitools/client/api/FormApi.java

@@ -17,6 +17,7 @@ import org.openapitools.client.ApiException;
 import org.openapitools.client.ApiResponse;
 import org.openapitools.client.Pair;
 
+import org.openapitools.client.model.TestFormObjectMultipartRequestMarker;
 
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -185,6 +186,117 @@ public class FormApi {
     }
     return localVarRequestBuilder;
   }
+  /**
+   * Test form parameter(s) for multipart schema
+   * Test form parameter(s) for multipart schema
+   * @param marker  (required)
+   * @return String
+   * @throws ApiException if fails to make API call
+   */
+  public String testFormObjectMultipart(TestFormObjectMultipartRequestMarker marker) throws ApiException {
+    ApiResponse<String> localVarResponse = testFormObjectMultipartWithHttpInfo(marker);
+    return localVarResponse.getData();
+  }
+
+  /**
+   * Test form parameter(s) for multipart schema
+   * Test form parameter(s) for multipart schema
+   * @param marker  (required)
+   * @return ApiResponse&lt;String&gt;
+   * @throws ApiException if fails to make API call
+   */
+  public ApiResponse<String> testFormObjectMultipartWithHttpInfo(TestFormObjectMultipartRequestMarker marker) throws ApiException {
+    HttpRequest.Builder localVarRequestBuilder = testFormObjectMultipartRequestBuilder(marker);
+    try {
+      HttpResponse<InputStream> localVarResponse = memberVarHttpClient.send(
+          localVarRequestBuilder.build(),
+          HttpResponse.BodyHandlers.ofInputStream());
+      if (memberVarResponseInterceptor != null) {
+        memberVarResponseInterceptor.accept(localVarResponse);
+      }
+      try {
+        if (localVarResponse.statusCode()/ 100 != 2) {
+          throw getApiException("testFormObjectMultipart", localVarResponse);
+        }
+        // for plain text response
+        if (localVarResponse.headers().map().containsKey("Content-Type") &&
+                "text/plain".equalsIgnoreCase(localVarResponse.headers().map().get("Content-Type").get(0).split(";")[0].trim())) {
+          java.util.Scanner s = new java.util.Scanner(localVarResponse.body()).useDelimiter("\\A");
+          String responseBodyText = s.hasNext() ? s.next() : "";
+          return new ApiResponse<String>(
+                  localVarResponse.statusCode(),
+                  localVarResponse.headers().map(),
+                  responseBodyText
+          );
+        } else {
+            throw new RuntimeException("Error! The response Content-Type is supposed to be `text/plain` but it's not: " + localVarResponse);
+        }
+      } finally {
+      }
+    } catch (IOException e) {
+      throw new ApiException(e);
+    }
+    catch (InterruptedException e) {
+      Thread.currentThread().interrupt();
+      throw new ApiException(e);
+    }
+  }
+
+  private HttpRequest.Builder testFormObjectMultipartRequestBuilder(TestFormObjectMultipartRequestMarker marker) throws ApiException {
+    // verify the required parameter 'marker' is set
+    if (marker == null) {
+      throw new ApiException(400, "Missing the required parameter 'marker' when calling testFormObjectMultipart");
+    }
+
+    HttpRequest.Builder localVarRequestBuilder = HttpRequest.newBuilder();
+
+    String localVarPath = "/form/object/multipart";
+
+    localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
+
+    localVarRequestBuilder.header("Accept", "text/plain");
+
+    MultipartEntityBuilder multiPartBuilder = MultipartEntityBuilder.create();
+    boolean hasFiles = false;
+    multiPartBuilder.addTextBody("marker", marker.toString());
+    HttpEntity entity = multiPartBuilder.build();
+    HttpRequest.BodyPublisher formDataPublisher;
+    if (hasFiles) {
+        Pipe pipe;
+        try {
+            pipe = Pipe.open();
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        new Thread(() -> {
+            try (OutputStream outputStream = Channels.newOutputStream(pipe.sink())) {
+                entity.writeTo(outputStream);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }).start();
+        formDataPublisher = HttpRequest.BodyPublishers.ofInputStream(() -> Channels.newInputStream(pipe.source()));
+    } else {
+        ByteArrayOutputStream formOutputStream = new ByteArrayOutputStream();
+        try {
+            entity.writeTo(formOutputStream);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        formDataPublisher = HttpRequest.BodyPublishers
+            .ofInputStream(() -> new ByteArrayInputStream(formOutputStream.toByteArray()));
+    }
+    localVarRequestBuilder
+        .header("Content-Type", entity.getContentType().getValue())
+        .method("POST", formDataPublisher);
+    if (memberVarReadTimeout != null) {
+      localVarRequestBuilder.timeout(memberVarReadTimeout);
+    }
+    if (memberVarInterceptor != null) {
+      memberVarInterceptor.accept(localVarRequestBuilder);
+    }
+    return localVarRequestBuilder;
+  }
   /**
    * Test form parameter(s) for oneOf schema
    * Test form parameter(s) for oneOf schema

samples/client/echo_api/java/native/src/main/java/org/openapitools/client/model/TestFormObjectMultipartRequestMarker.java

@@ -0,0 +1,150 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+import java.util.StringJoiner;
+import java.util.Objects;
+import java.util.Map;
+import java.util.HashMap;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+
+
+/**
+ * TestFormObjectMultipartRequestMarker
+ */
+@JsonPropertyOrder({
+  TestFormObjectMultipartRequestMarker.JSON_PROPERTY_NAME
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen", comments = "Generator version: 7.5.0-SNAPSHOT")
+public class TestFormObjectMultipartRequestMarker {
+  public static final String JSON_PROPERTY_NAME = "name";
+  private String name;
+
+  public TestFormObjectMultipartRequestMarker() { 
+  }
+
+  public TestFormObjectMultipartRequestMarker name(String name) {
+    this.name = name;
+    return this;
+  }
+
+   /**
+   * Get name
+   * @return name
+  **/
+  @javax.annotation.Nullable
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public String getName() {
+    return name;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setName(String name) {
+    this.name = name;
+  }
+
+
+  /**
+   * Return true if this test_form_object_multipart_request_marker object is equal to o.
+   */
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    TestFormObjectMultipartRequestMarker testFormObjectMultipartRequestMarker = (TestFormObjectMultipartRequestMarker) o;
+    return Objects.equals(this.name, testFormObjectMultipartRequestMarker.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(name);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class TestFormObjectMultipartRequestMarker {\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+  /**
+   * Convert the instance into URL query string.
+   *
+   * @return URL query string
+   */
+  public String toUrlQueryString() {
+    return toUrlQueryString(null);
+  }
+
+  /**
+   * Convert the instance into URL query string.
+   *
+   * @param prefix prefix of the query string
+   * @return URL query string
+   */
+  public String toUrlQueryString(String prefix) {
+    String suffix = "";
+    String containerSuffix = "";
+    String containerPrefix = "";
+    if (prefix == null) {
+      // style=form, explode=true, e.g. /pet?name=cat&type=manx
+      prefix = "";
+    } else {
+      // deepObject style e.g. /pet?id[name]=cat&id[type]=manx
+      prefix = prefix + "[";
+      suffix = "]";
+      containerSuffix = "]";
+      containerPrefix = "[";
+    }
+
+    StringJoiner joiner = new StringJoiner("&");
+
+    // add `name` to the URL query string
+    if (getName() != null) {
+      joiner.add(String.format("%sname%s=%s", prefix, suffix, URLEncoder.encode(String.valueOf(getName()), StandardCharsets.UTF_8).replaceAll("\\+", "%20")));
+    }
+
+    return joiner.toString();
+  }
+}
+

samples/client/echo_api/java/native/src/test/java/org/openapitools/client/model/TestFormObjectMultipartRequestMarkerTest.java

@@ -0,0 +1,48 @@
+/*
+ * Echo Server API
+ * Echo Server API
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * Contact: team@openapitools.org
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.Arrays;
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+/**
+ * Model tests for TestFormObjectMultipartRequestMarker
+ */
+public class TestFormObjectMultipartRequestMarkerTest {
+    private final TestFormObjectMultipartRequestMarker model = new TestFormObjectMultipartRequestMarker();
+
+    /**
+     * Model tests for TestFormObjectMultipartRequestMarker
+     */
+    @Test
+    public void testTestFormObjectMultipartRequestMarker() {
+        // TODO: test TestFormObjectMultipartRequestMarker
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    public void nameTest() {
+        // TODO: test name
+    }
+
+}