add tests

Author: Lms24

packages/svelte/test/config.test.ts

@@ -0,0 +1,91 @@
+import { withSentryConfig, SvelteConfig, SentrySvelteConfigOptions } from '../src/config';
+import { componentTrackingPreprocessor, FIRST_PASS_COMPONENT_TRACKING_PREPROC_ID } from '../src/preprocessors';
+import { SentryPreprocessorGroup } from '../src/types';
+
+describe('withSentryConfig', () => {
+  it.each([
+    [
+      'no preprocessors specified',
+      {
+        compilerOptions: {
+          enableSourcemap: true,
+        },
+      },
+    ],
+    [
+      'a single preprocessor specified',
+      {
+        compilerOptions: {
+          enableSourcemap: true,
+        },
+        preprocess: {},
+      },
+    ],
+    [
+      'an array of preprocessors specified',
+      {
+        compilerOptions: {
+          enableSourcemap: true,
+        },
+        preprocess: [{}, {}, {}],
+      },
+    ],
+  ])('adds our preprocessors by default to the provided svelte config with %s', (_, originalConfig: SvelteConfig) => {
+    const wrappedConfig = withSentryConfig(originalConfig);
+
+    const originalPreprocs = originalConfig.preprocess;
+    const originalNumberOfPreprocs = originalPreprocs
+      ? Array.isArray(originalPreprocs)
+        ? originalPreprocs.length
+        : 1
+      : 0;
+
+    expect(Array.isArray(wrappedConfig.preprocess)).toBe(true);
+    expect(wrappedConfig).toEqual({ ...originalConfig, preprocess: expect.any(Array) });
+    expect(wrappedConfig.preprocess).toHaveLength(originalNumberOfPreprocs + 1);
+    expect((wrappedConfig.preprocess as SentryPreprocessorGroup[])[0].id).toEqual(
+      FIRST_PASS_COMPONENT_TRACKING_PREPROC_ID,
+    );
+  });
+
+  it("doesn't add Sentry preprocessors that were already added by the users", () => {
+    const originalConfig = {
+      compilerOptions: {
+        enableSourcemap: true,
+      },
+      preprocess: componentTrackingPreprocessor(),
+    };
+
+    const wrappedConfig = withSentryConfig(originalConfig);
+
+    expect(wrappedConfig).toEqual({ ...originalConfig, preprocess: expect.any(Array) });
+    expect(wrappedConfig.preprocess).toHaveLength(1);
+  });
+
+  it('handles multiple wraps correctly by only adding our preprocessors once', () => {
+    const originalConfig = {
+      compilerOptions: {
+        enableSourcemap: true,
+      },
+    };
+
+    const wrappedConfig = withSentryConfig(withSentryConfig(withSentryConfig(originalConfig)));
+
+    expect(wrappedConfig).toEqual({ ...originalConfig, preprocess: expect.any(Array) });
+    expect(wrappedConfig.preprocess).toHaveLength(1);
+  });
+
+  it("doesn't add component tracking preprocessors if the feature is deactivated", () => {
+    const originalConfig = {
+      compilerOptions: {
+        enableSourcemap: true,
+      },
+      preprocess: [{}],
+    };
+
+    const sentryOptions: SentrySvelteConfigOptions = { componentTracking: { trackComponents: false } };
+    const wrappedConfig = withSentryConfig(originalConfig, sentryOptions);
+
+    expect(wrappedConfig).toEqual(originalConfig);
+  });
+});