fix: remove duplicated URL schema in proxy check (#52, #43)

[jundymek]

fix: remove duplicated URL schema in proxy check (#52, #43)

Problem

Since v1.1.3, FreeProxy(https=True).get() and any custom url= always failed with FreeProxyException: There are no working proxies at this time. — reported in #52 and #43.

Root cause

In __check_if_proxy_is_working, the test URL was built as:

url = f'{self.schema}://{self.url}'

But self.url already includes a schema (default 'https://www.google.com'). This produced a malformed double-schema URL:

Call	URL actually requested
FreeProxy()	http://https://www.google.com ❌
FreeProxy(https=True)	https://https://www.google.com ❌
FreeProxy(url='http://httpbin.org/get')	http://http://httpbin.org/get ❌

Every proxy check raised on the malformed URL, so get() treated all proxies as dead and ultimately raised FreeProxyException. Regression introduced in 1.1.3 (#49) when the url parameter was added.

Fix

Use self.url directly, since it already carries its schema:

url = self.url

Tests

Added two regression tests (TDD — written first, confirmed failing before the fix):

• test_check_uses_default_url_without_double_schema
• test_check_uses_custom_url_without_double_schema

Check	Result
Full suite — Python 3.9	✅ 19/19
Full suite — Python 3.11	✅ 19/19
Live FreeProxy(https=True).get() (was always failing per #52)	✅ returns a working proxy

Version

Patch bump 1.2.0 → 1.2.1 (bugfix, no API change). CHANGELOG and README badge updated.

Closes #52
Closes #43