[#559] TEST: Increase code coverage

* CHORE: build & deploy docs in master repo only

* TESTS: core wait tests

tests/integration/core_wait_test.py

@@ -0,0 +1,46 @@
+import time
+
+from selene import be
+from tests.integration.helpers.givenpage import GivenPage
+
+
+def test_waits_for_visibility_minimum_needed_time(session_browser):
+    page = GivenPage(session_browser.driver)
+    page.opened_with_body(
+        '''
+        <a href="#second" style="display:none">go to Heading 2</a>
+        <h2 id="second">Heading 2</h2>
+        '''
+    ).execute_script_with_timeout(
+        'document.getElementsByTagName("a")[0].style = "display:block";', 1
+    )
+    stamp_before = time.time_ns()
+    session_browser.element('a').wait.at_most(1).for_(be.visible)
+
+    session_browser.driver.find_element_by_css_selector('a').click()
+
+    stamp_after = time.time_ns()
+    deviation_sec = 0.2
+    assert stamp_after - stamp_before < (1 + deviation_sec) * pow(10, 9)
+    assert "second" in session_browser.driver.current_url
+
+
+def test_fails_on_timeout_during_waits_first_for_present_in_dom_then_visibility(session_browser):
+    page = GivenPage(session_browser.driver)
+    page.opened_with_body(
+        '''
+        <a href="#second" style="display:none">go to Heading 2</a>
+        <h2 id="second">Heading 2</h2>
+        '''
+    ).execute_script_with_timeout(
+        'document.getElementsByTagName("a")[0].style = "display:block";', 1.1
+    )
+    stamp_before = time.time_ns()
+    session_browser.element('a').wait.at_most(1).for_(be.visible)
+
+    session_browser.driver.find_element_by_css_selector('a').click()
+
+    stamp_after = time.time_ns()
+    deviation_sec = 0.2
+    assert stamp_after - stamp_before < (1 + deviation_sec) * pow(10, 9)
+    assert "second" in session_browser.driver.current_url