added requested tests for curl file import

test/importer/curl_test.dart

@@ -0,0 +1,94 @@
+import 'package:apidash/importer/curl/curl.dart';
+import 'package:test/test.dart';
+import 'package:apidash_core/apidash_core.dart';
+
+void main() {
+  group('CurlFileImport Tests', () {
+    late CurlFileImport curlImport;
+
+    setUp(() {
+      curlImport = CurlFileImport();
+    });
+
+    test('should parse simple GET request', () {
+      const curl = 'curl https://api.apidash.dev/users';
+      final result = curlImport.getHttpRequestModel(curl);
+
+      expect(
+          result,
+          const HttpRequestModel(
+              method: HTTPVerb.get,
+              url: 'https://api.apidash.dev/users',
+              headers: null,
+              params: [],
+              body: null,
+              bodyContentType: ContentType.text,
+              formData: null));
+    });
+
+    test('should parse POST request with JSON body and headers', () {
+      const curl = '''
+        curl -X POST https://api.apidash.dev/users 
+        -H "Content-Type: application/json" 
+        -H "Authorization: Bearer token123" 
+        -d '{"name": "John", "age": 30}'
+      ''';
+
+      final result = curlImport.getHttpRequestModel(curl);
+
+      expect(
+        result,
+        const HttpRequestModel(
+          method: HTTPVerb.post,
+          url: 'https://api.apidash.dev/users',
+          headers: [
+            NameValueModel(name: 'Content-Type', value: 'application/json'),
+            NameValueModel(name: 'Authorization', value: 'Bearer token123'),
+          ],
+          params: [],
+          body: '{"name": "John", "age": 30}',
+          bodyContentType: ContentType.json,
+          formData: null,
+        ),
+      );
+    });
+
+    test('should parse form data request', () {
+      const curl = '''
+        curl -X POST https://api.apidash.dev/upload 
+        -F "file=@photo.jpg" 
+        -F "description=My Photo"
+      ''';
+
+      final result = curlImport.getHttpRequestModel(curl);
+
+      expect(
+          result,
+          const HttpRequestModel(
+            method: HTTPVerb.post,
+            url: 'https://api.apidash.dev/upload',
+            headers: [
+              NameValueModel(name: "Content-Type", value: "multipart/form-data")
+            ],
+            params: [],
+            body: null,
+            bodyContentType: ContentType.formdata,
+            formData: [
+              FormDataModel(
+                  name: 'file', value: 'photo.jpg', type: FormDataType.file),
+              FormDataModel(
+                  name: 'description',
+                  value: 'My Photo',
+                  type: FormDataType.text),
+            ],
+          ));
+    });
+
+    test('should return null for invalid curl command', () {
+      const curl = 'invalid curl command';
+      final result = curlImport.getHttpRequestModel(curl);
+
+      expect(result, isNull);
+    });
+  });
+}