diff --git a/bin/index.js b/bin/index.js
index 0e150e9f..c38cce7a 100755
--- a/bin/index.js
+++ b/bin/index.js
@@ -13,10 +13,10 @@ program
     .option('--client [value]', 'HTTP client to generate [fetch, xhr]', 'fetch')
     .parse(process.argv);
 
-const SwaggerCodegen = require(path.resolve(__dirname, '../dist/index.js'));
+const OpenAPI = require(path.resolve(__dirname, '../dist/index.js'));
 
-if (SwaggerCodegen) {
-    SwaggerCodegen.generate(
+if (OpenAPI) {
+    OpenAPI.generate(
         program.input,
         program.output,
         program.client
diff --git a/src/index.spec.ts b/src/index.spec.ts
new file mode 100644
index 00000000..e3e52483
--- /dev/null
+++ b/src/index.spec.ts
@@ -0,0 +1,11 @@
+import * as OpenAPI from '.';
+
+describe('index', () => {
+    it('parses v2 without issues', () => {
+        OpenAPI.generate('./test/mock/v2/spec.json', './test/result/v2/', OpenAPI.HttpClient.FETCH, false);
+    });
+
+    it('parses v3 without issues', () => {
+        OpenAPI.generate('./test/mock/v3/spec.json', './test/result/v3/', OpenAPI.HttpClient.FETCH, false);
+    });
+});
diff --git a/src/index.ts b/src/index.ts
index 297b69bf..76dc8da9 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -19,8 +19,9 @@ export enum HttpClient {
  * @param input The relative location of the OpenAPI spec.
  * @param output The relative location of the output directory.
  * @param httpClient The selected httpClient (fetch or XHR).
+ * @param write Write the files to disk (true or false)
  */
-export function generate(input: string, output: string, httpClient: HttpClient = HttpClient.FETCH): void {
+export function generate(input: string, output: string, httpClient: HttpClient = HttpClient.FETCH, write: boolean = false): void {
     const inputPath = path.resolve(process.cwd(), input);
     const outputPath = path.resolve(process.cwd(), output);
 
@@ -34,12 +35,16 @@ export function generate(input: string, output: string, httpClient: HttpClient =
         switch (openApiVersion) {
             case OpenApiVersion.V2:
                 const clientV2 = parseV2(openApi);
-                writeClient(clientV2, httpClient, templates, outputPath);
+                if (write) {
+                    writeClient(clientV2, httpClient, templates, outputPath);
+                }
                 break;
 
             case OpenApiVersion.V3:
                 const clientV3 = parseV3(openApi);
-                writeClient(clientV3, httpClient, templates, outputPath);
+                if (write) {
+                    writeClient(clientV3, httpClient, templates, outputPath);
+                }
                 break;
         }
     } catch (e) {