Change current_context= to set_context.

current_context= would only work with self, eg `self.current_context=`,
which makes it stand out in the API.

It also was sending the wrong parameters, changed from sending :context
to :name

Author: DylanLacey

android_tests/lib/android/specs/common/device.rb

@@ -40,10 +40,14 @@
     wait { current_context.must_equal 'NATIVE_APP' }
   end
 
-  t 'current_context=' do
+  t 'set_context' do
     wait do
-      current_context= 'WEBVIEW'
-      current_context.must_equal 'WEBVIEW'
+      scroll_to "Views"
+      last_s_text.click
+      scroll_to 'WebView'
+      last_s_text.click
+      set_context 'WEBVIEW'
+      current_context.must_equal 'WEBVIEW_1'
     end
   end
 

lib/appium_lib/device/device.rb

@@ -128,9 +128,9 @@ def background_app(duration)
           end
         end
 
-        add_endpoint_method(:current_context=, 'session/:session_id/context') do
-          def current_context=(context=null)
-            execute :current_context=, {}, :context => context
+        add_endpoint_method(:set_context, 'session/:session_id/context') do
+          def set_context(context=null)
+            execute :set_context, {}, :name => context
           end
         end
 
@@ -304,12 +304,12 @@ def multi_touch(actions)
       end
     end # class << self
 
-    # @!method current_context=
+    # @!method set_context
     #   Change the context to the given context.
     #   @param [String] The context to change to
     #
     #   ```ruby
-    #   current_context= "NATIVE_APP"
+    #   set_context "NATIVE_APP"
     #   ```
 
     # @!method current_context
@@ -327,13 +327,14 @@ def multi_touch(actions)
     # ```
     def within_context(context)
       existing_context = current_context
+      set_context context
       yield if block_given?
-      current_context = existing_context
+      set_context existing_context
     end
 
-    # Change to the default context.  This is equivalent to `current_context= nil`.
+    # Change to the default context.  This is equivalent to `set_context nil`.
     def switch_to_default_context
-      current_context = nil
+      set_context nil
     end
   end # module Device
 end # module Appium