Add unit tests

Author: mdmintz

examples/unit_tests/ReadMe.md

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+### <img src="https://seleniumbase.io/img/sb_icon.png" title="SeleniumBase" width="20" /> pytest-specific unit tests
+
+The tests in this folder are for basic verification of the SeleniumBase framework with pytest.

examples/unit_tests/verify_framework.py

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+""" Run with pytest """
+
+
+def test_simple_cases(testdir):
+    """ Verify a simple passing test and a simple failing test. """
+    testdir.makepyfile(
+        """
+        from seleniumbase import BaseCase
+        class MyTestCase(BaseCase):
+            def test_passing(self):
+                self.assert_equal('yes', 'yes')
+            def test_failing(self):
+                self.assert_equal('yes', 'no')
+        """
+    )
+    result = testdir.inline_run("--headless", "--rs")
+    assert result.matchreport("test_passing").passed
+    assert result.matchreport("test_failing").failed
+
+
+def test_basecase(testdir):
+    testdir.makepyfile(
+        """
+        from seleniumbase import BaseCase
+        class MyTest(BaseCase):
+            def test_basecase(self):
+                self.open("data:text/html,<p>Hello<br><input></p>")
+                self.assert_element("html > body")  # selector
+                self.assert_text("Hello", "body p")  # text, selector
+                self.type("input", "Goodbye")  # selector, text
+                self.click("body p")  # selector
+        """
+    )
+    result = testdir.inline_run("--headless")
+    assert result.matchreport("test_basecase").passed
+
+
+def test_sb_fixture(testdir):
+    testdir.makepyfile(
+        """
+        def test_sb_fixture(sb):
+            sb.open("data:text/html,<p>Hello<br><input></p>")
+            sb.assert_element("html > body")  # selector
+            sb.assert_text("Hello", "body p")  # text, selector
+            sb.type("input", "Goodbye")  # selector, text
+            sb.click("body p")  # selector
+        """
+    )
+    result = testdir.inline_run("--headless")
+    assert result.matchreport("test_sb_fixture").passed
+
+
+def test_request_sb_fixture(testdir):
+    testdir.makepyfile(
+        """
+        def test_request_sb_fixture(request):
+            sb = request.getfixturevalue('sb')
+            sb.open("data:text/html,<p>Hello<br><input></p>")
+            sb.assert_element("html > body")  # selector
+            sb.assert_text("Hello", "body p")  # text, selector
+            sb.type("input", "Goodbye")  # selector, text
+            sb.click("body p")  # selector
+            sb.tearDown()
+        """
+    )
+    result = testdir.inline_run("--headless")
+    assert result.matchreport("test_request_sb_fixture").passed