fix(java-spring): add missing imports for converter (#23325)

Author: renato-tv

modules/openapi-generator/src/main/resources/JavaSpring/converter.mustache

@@ -1,5 +1,9 @@
 package {{configPackage}};
 
+import java.math.BigDecimal;
+import java.net.URI;
+import java.util.UUID;
+
 {{#models}}
     {{#model}}
         {{#isEnum}}

modules/openapi-generator/src/test/java/org/openapitools/codegen/java/spring/SpringCodegenTest.java

@@ -3057,6 +3057,36 @@ public void shouldHandleSeparatelyInterfaceAndModelAdditionalAnnotations() throw
                 .containsWithName("marker.Common");
     }
 
+    @Test
+    public void contractWithUriEnumContainsEnumConverterWithUriImport() throws IOException {
+        Map<String, File> output = generateFromContract("src/test/resources/3_0/enum_uri.yaml", SPRING_BOOT);
+
+        JavaFileAssert.assertThat(output.get("EnumConverterConfiguration.java"))
+                .hasImports("java.net.URI")
+                .fileContains("Converter<URI, ExampleUriEnum>")
+                .assertMethod("exampleUriEnumConverter");
+    }
+
+    @Test
+    public void contractWithUuidEnumContainsEnumConverterWithUuidImport() throws IOException {
+        Map<String, File> output = generateFromContract("src/test/resources/3_0/enum_uuid.yaml", SPRING_BOOT);
+
+        JavaFileAssert.assertThat(output.get("EnumConverterConfiguration.java"))
+                .hasImports("java.util.UUID")
+                .fileContains("Converter<UUID, ExampleUuidEnum>")
+                .assertMethod("exampleUuidEnumConverter");
+    }
+
+    @Test
+    public void contractWithNumberEnumContainsEnumConverterWithBigDecimalImport() throws IOException {
+        Map<String, File> output = generateFromContract("src/test/resources/3_0/enum_number.yaml", SPRING_BOOT);
+
+        JavaFileAssert.assertThat(output.get("EnumConverterConfiguration.java"))
+                .hasImports("java.math.BigDecimal")
+                .fileContains("Converter<BigDecimal, ExampleNumberEnum>")
+                .assertMethod("exampleNumberEnumConverter");
+    }
+
     @Test
     public void contractWithoutEnumDoesNotContainEnumConverter() throws IOException {
         Map<String, File> output = generateFromContract("src/test/resources/3_0/generic.yaml", SPRING_BOOT);

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

@@ -0,0 +1,33 @@
+openapi: 3.0.0
+info:
+  title: Sample API
+  description: API with number enum.
+  version: 1.0.0
+paths:
+  /resources:
+    get:
+      summary: Returns resources.
+      responses:
+        200:
+          description: OK
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Resource'
+components:
+  schemas:
+    Resource:
+      type: object
+      properties:
+        source:
+          $ref: '#/components/schemas/ExampleNumberEnum'
+    ExampleNumberEnum:
+      type: number
+      description: Example of an Enum with number values
+      enum:
+        - 1.1
+        - 2.2
+        - 3.3
+

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

@@ -0,0 +1,33 @@
+openapi: 3.0.0
+info:
+  title: Sample API
+  description: API with URI enum.
+  version: 1.0.0
+paths:
+  /resources:
+    get:
+      summary: Returns resources.
+      responses:
+        200:
+          description: OK
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Resource'
+components:
+  schemas:
+    Resource:
+      type: object
+      properties:
+        source:
+          $ref: '#/components/schemas/ExampleUriEnum'
+    ExampleUriEnum:
+      type: string
+      format: uri
+      description: Example of an Enum with URI values
+      enum:
+        - "https://another-example.com"
+        - "https://example.com"
+

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

@@ -0,0 +1,33 @@
+openapi: 3.0.0
+info:
+  title: Sample API
+  description: API with UUID enum.
+  version: 1.0.0
+paths:
+  /resources:
+    get:
+      summary: Returns resources.
+      responses:
+        200:
+          description: OK
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Resource'
+components:
+  schemas:
+    Resource:
+      type: object
+      properties:
+        source:
+          $ref: '#/components/schemas/ExampleUuidEnum'
+    ExampleUuidEnum:
+      type: string
+      format: uuid
+      description: Example of an Enum with UUID values
+      enum:
+        - "d6a8f2b0-1c34-4e56-a789-0abcdef12345"
+        - "e7b9c3d1-2d45-5f67-b890-1bcdef023456"
+