Added authentication forms and routes

tests/testclient/test_testable_element.py

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+import pytest
+from fasthtml.components import Div
+from fasthtml.fastapp import fast_app
+
+from myfasthtml.core.testclient import MyTestClient, TestableElement, MyFT
+
+
+def test_i_can_create_testable_element_from_ft():
+  ft = Div("hello world", id="test")
+  testable_element = TestableElement(None, ft)
+  
+  assert testable_element.ft == ft
+  assert testable_element.html_fragment == '<div id="test">hello world</div>'
+
+
+def test_i_can_create_testable_element_from_str():
+  ft = '<div id="test">hello world</div>'
+  testable_element = TestableElement(None, ft)
+  
+  assert testable_element.ft == MyFT('div', {'id': 'test'})
+  assert testable_element.html_fragment == '<div id="test">hello world</div>'
+
+
+def test_i_can_create_testable_element_from_beautifulsoup_element():
+  ft = '<div id="test">hello world</div>'
+  from bs4 import BeautifulSoup
+  tag = BeautifulSoup(ft, 'html.parser').div
+  testable_element = TestableElement(None, tag)
+  
+  assert testable_element.ft == MyFT('div', {'id': 'test'})
+  assert testable_element.html_fragment == '<div id="test">hello world</div>'
+
+
+def test_i_cannot_create_testable_element_from_other_type():
+  with pytest.raises(ValueError) as exc_info:
+    TestableElement(None, 123)
+  
+  assert str(exc_info.value) == "Invalid source '123' for TestableElement."
+
+
+def test_i_can_click():
+  test_app, rt = fast_app(default_hdrs=False)
+  client = MyTestClient(test_app)
+  ft = Div(
+    hx_post="/search",
+    hx_target="#results",
+    hx_swap="innerHTML",
+    hx_vals='{"attr": "attr_value"}'
+  )
+  testable_element = TestableElement(client, ft)
+  
+  @rt('/search')
+  def post(hx_target: str, hx_swap: str, attr: str):  # hx_post is used to the Verb. It's not a parameter
+    return f"received {hx_target=}, {hx_swap=}, {attr=}"
+  
+  testable_element.click()
+  assert client.get_content() == "received hx_target='#results', hx_swap='innerHTML', attr='attr_value'"
+
+
+def test_i_cannot_test_when_not_clickable():
+  test_app, rt = fast_app(default_hdrs=False)
+  client = MyTestClient(test_app)
+  ft = Div("hello world")
+  testable_element = TestableElement(client, ft)
+  
+  with pytest.raises(ValueError) as exc_info:
+    testable_element.click()
+  
+  assert str(exc_info.value) == "The <div> element has no HTMX verb attribute (e.g., hx_get, hx_post) to define a URL."