Issue #10244 fix php enum default value initialization (#10273)

Co-authored-by: Eric Durand-Tremblay <etremblay@kronostechnologies.com>

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java

@@ -631,7 +631,7 @@ public abstract class AbstractPhpCodegen extends DefaultCodegen implements Codeg
 
     @Override
     public String toEnumDefaultValue(String value, String datatype) {
-        return datatype + "_" + value;
+        return "self::" + datatype + "_" + value;
     }
 
     @Override

modules/openapi-generator/src/test/java/org/openapitools/codegen/php/AbstractPhpCodegenTest.java

@@ -32,6 +32,7 @@ import org.testng.annotations.DataProvider;
 import org.testng.annotations.Test;
 
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.HashMap;
 
 public class AbstractPhpCodegenTest {
@@ -146,6 +147,26 @@ public class AbstractPhpCodegenTest {
         Assert.assertTrue(cp1.isPrimitiveType);
     }
 
+    @Test(description = "Issue #10244")
+    public void testEnumPropertyWithDefaultValue() {
+        final OpenAPI openAPI = TestUtils.parseFlattenSpec("src/test/resources/3_0/php/issue_10244.yaml");
+        final AbstractPhpCodegen codegen = new P_AbstractPhpCodegen();
+
+        Schema test1 = openAPI.getComponents().getSchemas().get("ModelWithEnumPropertyHavingDefault");
+        CodegenModel cm1 = codegen.fromModel("ModelWithEnumPropertyHavingDefault", test1);
+
+        // Make sure we got the container object.
+        Assert.assertEquals(cm1.getDataType(), "object");
+        Assert.assertEquals(codegen.getTypeDeclaration("MyResponse"), "\\php\\Model\\MyResponse");
+
+        // We need to postProcess the model for enums to be processed
+        codegen.postProcessModels(Collections.singletonMap("models", Collections.singletonList(Collections.singletonMap("model", cm1))));
+
+        // Assert the enum default value is properly generated
+        CodegenProperty cp1 = cm1.vars.get(0);
+        Assert.assertEquals(cp1.getDefaultValue(), "self::PROPERTY_NAME_VALUE");
+    }
+
     private static class P_AbstractPhpCodegen extends AbstractPhpCodegen {
         @Override
         public CodegenType getTag() {

modules/openapi-generator/src/test/resources/3_0/php/issue_10244.yaml

@@ -0,0 +1,26 @@
+openapi: 3.0.0
+info:
+  title: 'Issue 10224 Enum default value'
+  version: latest
+paths:
+  '/':
+    get:
+      operationId: operation
+      responses:
+        '200':
+          description: Success
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ModelWithEnumPropertyHavingDefault'
+components:
+  schemas:
+    ModelWithEnumPropertyHavingDefault:
+      required:
+        - propertyName
+      properties:
+        propertyName:
+          type: string
+          default: VALUE
+          enum:
+            - VALUE