bdd: Add more tests for :zoom

tests/integration/features/test_zoom.py

@@ -19,3 +19,10 @@
 
 import pytest_bdd as bdd
 bdd.scenarios('zoom.feature')
+
+
+@bdd.then(bdd.parsers.parse("the zoom should be {zoom}%"))
+def check_zoom(quteproc, zoom):
+    data = quteproc.get_session()
+    value = data['windows'][0]['tabs'][0]['history'][0]['zoom'] * 100
+    assert abs(value - float(zoom)) < 0.0001

tests/integration/features/zoom.feature

@@ -2,41 +2,31 @@ Feature: Zooming in and out
 
     Background:
         Given I open data/hello.txt
+        And I set ui -> zoom-levels to 50%,90%,110%
         And I run :tab-only
 
     Scenario: Zooming in
         When I run :zoom-in
         Then the message "Zoom level: 110%" should be shown.
-        And the session should look like:
-            windows:
-            - tabs:
-              - history:
-                - zoom: 1.1
+        And the zoom should be 110%
 
     Scenario: Zooming out
         When I run :zoom-out
         Then the message "Zoom level: 90%" should be shown.
-        And the session should look like:
-            windows:
-            - tabs:
-              - history:
-                - zoom: 0.9
+        And the zoom should be 90%
 
     Scenario: Setting zoom
         When I run :zoom 50
         Then the message "Zoom level: 50%" should be shown.
-        And the session should look like:
-            windows:
-            - tabs:
-              - history:
-                - zoom: 0.5
+        And the zoom should be 50%
 
     Scenario: Resetting zoom
-        When I run :zoom 50
+        When I set ui -> default-zoom to 42%
+        And I run :zoom 50
         And I run :zoom
-        Then the message "Zoom level: 100%" should be shown.
-        And the session should look like:
-            windows:
-            - tabs:
-              - history:
-                - zoom: 1.0
+        Then the message "Zoom level: 42%" should be shown.
+        And the zoom should be 42%
+
+    Scenario: Setting zoom to invalid value
+        When I run :zoom -1
+        Then the error "Can't zoom -1%!" should be shown.