1 files changed, 137 insertions, 0 deletions

diff --git a/test/helpers/url-helpers.test.ts b/test/helpers/url-helpers.test.ts
new file mode 100644
index 000000000..9ef06b905
--- /dev/null
+++ b/test/helpers/url-helpers.test.ts
@@ -0,0 +1,137 @@
+import * as url_helpers from '../../src/helpers/url-helpers';
+
+describe('url_helpers', () => {
+  describe('isValidExternalURL', () => {
+    describe('with string', () => {
+      it('returns false for empty string', () => {
+        const result = url_helpers.isValidExternalURL('');
+        expect(result).toBe(false);
+      });
+
+      it('returns false for whitespace string', () => {
+        const result = url_helpers.isValidExternalURL('  ');
+        expect(result).toBe(false);
+      });
+
+      it('returns false for random string', () => {
+        const result = url_helpers.isValidExternalURL('some random string');
+        expect(result).toBe(false);
+      });
+
+      it('returns false for invalid url', () => {
+        const result = url_helpers.isValidExternalURL('shttps://google');
+        expect(result).toBe(false);
+      });
+
+      it('returns true for valid http url', () => {
+        const result = url_helpers.isValidExternalURL('http://google');
+        expect(result).toBe(true);
+      });
+
+      it('returns true for valid https url', () => {
+        const result = url_helpers.isValidExternalURL('https://google');
+        expect(result).toBe(true);
+      });
+    });
+
+    describe('with URL', () => {
+      // Note: not testing the invalid string urls - since the URL ctor itself will raise an error
+
+      it('returns false for invalid url', () => {
+        const result = url_helpers.isValidExternalURL(
+          new URL('shttps://google'),
+        );
+        expect(result).toBe(false);
+      });
+
+      it('returns true for valid http url', () => {
+        const result = url_helpers.isValidExternalURL(new URL('http://google'));
+        expect(result).toBe(true);
+      });
+
+      it('returns true for valid https url', () => {
+        const result = url_helpers.isValidExternalURL(
+          new URL('https://google'),
+        );
+        expect(result).toBe(true);
+      });
+    });
+  });
+
+  describe('fixUrl', () => {
+    it('handles with empty string', () => {
+      const result = url_helpers.fixUrl('');
+      expect(result).toEqual('');
+    });
+
+    it('handles with whitespace string', () => {
+      const result = url_helpers.fixUrl('   ');
+      expect(result).toEqual('   ');
+    });
+
+    it('handles with random string', () => {
+      const result = url_helpers.fixUrl('some random string');
+      expect(result).toEqual('some random string');
+    });
+
+    it('handles string starting with http://', () => {
+      expect(url_helpers.fixUrl('http://some/random/url')).toEqual(
+        'http://some/random/url',
+      );
+      expect(url_helpers.fixUrl('http://some//random//url')).toEqual(
+        'http://some/random/url',
+      );
+
+      const gmailEmbeddedUrl =
+        'https://www.google.com/url?q=https://github.com/ferdium/ferdium-app/issues/87&source=gmail';
+      expect(url_helpers.fixUrl(gmailEmbeddedUrl)).toEqual(gmailEmbeddedUrl); // it should NOT remove the double-slash from the embedded url in the query string
+    });
+
+    it('handles string starting with https://', () => {
+      expect(url_helpers.fixUrl('https://some/random/url')).toEqual(
+        'https://some/random/url',
+      );
+      expect(url_helpers.fixUrl('https://some//random//url')).toEqual(
+        'https://some/random/url',
+      );
+    });
+
+    it('handles string starting with file://', () => {
+      expect(url_helpers.fixUrl('file://some/random/url')).toEqual(
+        'file://some/random/url',
+      );
+      expect(url_helpers.fixUrl('file://some//random//url')).toEqual(
+        'file://some/random/url',
+      );
+    });
+  });
+
+  describe('isValidFileUrl', () => {
+    it('returns false for empty string', () => {
+      const result = url_helpers.isValidFileUrl('');
+      expect(result).toBe(false);
+    });
+
+    it('returns false for whitespace string', () => {
+      const result = url_helpers.isValidFileUrl('  ');
+      expect(result).toBe(false);
+    });
+
+    it('returns false for random string', () => {
+      const result = url_helpers.isValidFileUrl('some random string');
+      expect(result).toBe(false);
+    });
+
+    it('returns false for invalid url', () => {
+      const result = url_helpers.isValidFileUrl('sfile://google');
+      expect(result).toBe(false);
+    });
+
+    it('returns true for valid file url', () => {
+      const fileName =
+        process.platform === 'win32' ? 'file:///c:\\' : 'file:///';
+      const result = url_helpers.isValidFileUrl(fileName);
+      expect(result).toBe(true);
+    });
+  });
+});