[fix] assertion roulette

t/commands.vim

@@ -9,21 +9,34 @@ describe 'commands'
     Expect exists('#airline') to_be_true
   end
 
-  it 'should toggle whitespace off and on'
+  it 'should toggle whitespace off'
     call airline#extensions#load()
     execute 'AirlineToggleWhitespace'
     Expect exists('#airline_whitespace') to_be_false
+  end
+
+  it 'should toggle whitespace on'
+    call airline#extensions#load()
     execute 'AirlineToggleWhitespace'
     Expect exists('#airline_whitespace') to_be_true
   end
 
-  it 'should display theme name with no args'
+  it 'should display theme name "simple"'
     execute 'AirlineTheme simple'
     Expect g:airline_theme == 'simple'
+  end
+
+  it 'should display theme name "dark"'
     execute 'AirlineTheme dark'
     Expect g:airline_theme == 'dark'
+  end
+
+  it 'should display theme name "dark" because specifying a name that does not exist'
     execute 'AirlineTheme doesnotexist'
     Expect g:airline_theme == 'dark'
+  end
+
+  it 'should display theme name molokai'
     colors molokai
     Expect g:airline_theme == 'molokai'
   end