[typescript-fetch] [BUG] Fix duplication of ModelNamePrefix in import statements (#20109)

Author: ASterdyniak

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

@@ -477,7 +477,7 @@ private List<Map<String, String>> toTsImports(CodegenModel cm, Set<String> impor
                 HashMap<String, String> tsImport = new HashMap<>();
                 // TVG: This is used as class name in the import statements of the model file
                 tsImport.put("classname", im);
-                tsImport.put("filename", toModelFilename(im));
+                tsImport.put("filename", convertUsingFileNamingConvention(im));
                 tsImports.add(tsImport);
             }
         }

modules/openapi-generator/src/test/java/org/openapitools/codegen/typescript/fetch/TypeScriptFetchClientCodegenTest.java

@@ -266,6 +266,22 @@ public void testApiFileNameInVariousFormat() {
                 codegen.toApiFilename("FirstSimpleController"));
     }
 
+    @Test(description = "Verify names of files generated in kebab-case and imports with additional model prefix")
+    public void testGeneratedFilenamesInPascalCaseWithAdditionalModelPrefix() throws IOException {
+
+        Map<String, Object> properties = new HashMap<>();
+        properties.put("fileNaming", TypeScriptFetchClientCodegen.PASCAL_CASE);
+        properties.put(CodegenConstants.MODEL_NAME_PREFIX, "SomePrefix");
+
+        File output = generate(properties);
+
+        Path pet = Paths.get(output + "/models/SomePrefixPet.ts");
+        TestUtils.assertFileExists(pet);
+        TestUtils.assertFileContains(pet, "} from './SomePrefixPetCategory';");
+        TestUtils.assertFileExists(Paths.get(output + "/models/SomePrefixPetCategory.ts"));
+        TestUtils.assertFileExists(Paths.get(output + "/apis/PetControllerApi.ts"));
+    }
+
     @Test(description = "Verify names of files generated in kebab-case and imports")
     public void testGeneratedFilenamesInKebabCase() throws IOException {
 
@@ -281,6 +297,22 @@ public void testGeneratedFilenamesInKebabCase() throws IOException {
         TestUtils.assertFileExists(Paths.get(output + "/apis/pet-controller-api.ts"));
     }
 
+    @Test(description = "Verify names of files generated in kebab-case and imports with additional model prefix")
+    public void testGeneratedFilenamesInKebabCaseWithAdditionalModelPrefix() throws IOException {
+
+        Map<String, Object> properties = new HashMap<>();
+        properties.put("fileNaming", TypeScriptFetchClientCodegen.KEBAB_CASE);
+        properties.put(CodegenConstants.MODEL_NAME_PREFIX, "SomePrefix");
+
+        File output = generate(properties);
+
+        Path pet = Paths.get(output + "/models/some-prefix-pet.ts");
+        TestUtils.assertFileExists(pet);
+        TestUtils.assertFileContains(pet, "} from './some-prefix-pet-category';");
+        TestUtils.assertFileExists(Paths.get(output + "/models/some-prefix-pet-category.ts"));
+        TestUtils.assertFileExists(Paths.get(output + "/apis/pet-controller-api.ts"));
+    }
+
     @Test(description = "Verify names of files generated in camelCase and imports")
     public void testGeneratedFilenamesInCamelCase() throws IOException {
 
@@ -296,6 +328,22 @@ public void testGeneratedFilenamesInCamelCase() throws IOException {
         TestUtils.assertFileExists(Paths.get(output + "/apis/petControllerApi.ts"));
     }
 
+    @Test(description = "Verify names of files generated in camelCase and imports with additional model prefix")
+    public void testGeneratedFilenamesInCamelCaseWithAdditionalModelPrefix() throws IOException {
+
+        Map<String, Object> properties = new HashMap<>();
+        properties.put("fileNaming", TypeScriptFetchClientCodegen.CAMEL_CASE);
+        properties.put(CodegenConstants.MODEL_NAME_PREFIX, "SomePrefix");
+
+        File output = generate(properties);
+
+        Path pet = Paths.get(output + "/models/somePrefixPet.ts");
+        TestUtils.assertFileExists(pet);
+        TestUtils.assertFileContains(pet, "} from './somePrefixPetCategory';");
+        TestUtils.assertFileExists(Paths.get(output + "/models/somePrefixPetCategory.ts"));
+        TestUtils.assertFileExists(Paths.get(output + "/apis/petControllerApi.ts"));
+    }
+
     private static File generate(Map<String, Object> properties) throws IOException {
         File output = Files.createTempDirectory("test").toFile();
         output.deleteOnExit();