Testing some of the methods added.

api/chrome/features/chrome.feature

@@ -1,6 +1,17 @@
 Feature: The Chrome API client
 
-    Scenario: Using the Chrome.Start method
+    Scenario: Using the Chrome.start method
         Given the Chrome client
-        When the Start method is called
-        Then Google Chrome should open
+        When the start method is called
+        Then Google Chrome should open
+    
+    Scenario: Using the Chrome.start_headless method
+        Given the Chrome client
+        When the start_headless method is called
+        Then Google Chrome should open headless
+
+    Scenario: Using the Chrome.stop method
+        Given the Chrome client
+        And a Chrome instance
+        When the stop method is called upon it
+        Then this Google Chrome instance should close

api/chrome/features/steps/steps.py

@@ -1,16 +1,44 @@
 from behave import *
 from cli import Chrome
 
+# ========================== Chrome.start () ==========================
 @given ("the Chrome client")
 def step_impl (context):
     context.client = Chrome()
 
-@when ("the Start method is called")
+@when ("the start method is called")
 def step_impl (context):
-    # context._return = None
-    context._return = context.client.start()
+    context.start_return = context.client.start()
 
 @then ("Google Chrome should open")
 def step_impl (context):
-    print (f"\n-----------\n{context._return}\n------------\n")
-    assert context._return == "", "Google Chrome did not opened as expected."
+    assert context.start_return == "", "Google Chrome did not opened as expected."
+    context.client.stop()
+
+
+# ========================== Chrome.start_headless () ==========================
+@when ("the start_headless method is called")
+def step_impl (context):
+    context.start_headless_return = context.client.start_headless()
+
+@then ("Google Chrome should open headless")
+def step_impl (context):
+    assert context.start_headless_return == "", "Google Chrome did not opened as expected."
+    context.client.stop()
+
+
+# ========================== Chrome.stop () ==========================
+@given ("a Chrome instance")
+def step_impl (context):
+    context.start_return = context.client.start()
+
+@when ("the stop method is called upon it")
+def step_impl (context):
+    context.stop_return = context.client.stop()
+
+@then ("this Google Chrome instance should close")
+def step_impl (context):
+    assert context.stop_return == "", "Google Chrome did not closed as expected."
+
+
+# ========================== Chrome.new () ==========================