Run style unit tests in testing mode, disable some properties in testing mode

components/servo/Cargo.toml

@@ -24,6 +24,7 @@ default = ["webdriver", "max_log_level"]
 max_log_level = ["log/release_max_level_info"]
 webdriver = ["webdriver_server"]
 energy-profiling = ["profile_traits/energy-profiling"]
+testing = ["style/testing"]
 
 [profile.release]
 opt-level = 3

components/style/properties/data.py

@@ -185,9 +185,9 @@ class PropertiesData(object):
     def active_style_structs(self):
         return [s for s in self.style_structs if s.additional_methods or s.longhands]
 
-    def declare_longhand(self, name, products="gecko servo", **kwargs):
+    def declare_longhand(self, name, products="gecko servo", disable_when_testing=False, **kwargs):
         products = products.split()
-        if self.product not in products and not self.testing:
+        if self.product not in products and not (self.testing and not disable_when_testing):
             return
 
         longhand = Longhand(self.current_style_struct, name, **kwargs)
@@ -200,9 +200,10 @@ class PropertiesData(object):
 
         return longhand
 
-    def declare_shorthand(self, name, sub_properties, products="gecko servo", *args, **kwargs):
+    def declare_shorthand(self, name, sub_properties, products="gecko servo",
+                          disable_when_testing=False, *args, **kwargs):
         products = products.split()
-        if self.product not in products and not self.testing:
+        if self.product not in products and not (self.testing and not disable_when_testing):
             return
 
         sub_properties = [self.longhands_by_name[s] for s in sub_properties]

components/style/properties/longhand/box.mako.rs

@@ -920,7 +920,7 @@ ${helpers.single_keyword("-moz-appearance",
                          animatable=False)}
 
 // Non-standard: https://developer.mozilla.org/en-US/docs/Web/CSS/-moz-binding
-<%helpers:longhand name="-moz-binding" products="gecko" animatable="False">
+<%helpers:longhand name="-moz-binding" products="gecko" animatable="False" disable_when_testing="True">
     use cssparser::{CssStringWriter, ToCss};
     use gecko_bindings::ptr::{GeckoArcPrincipal, GeckoArcURI};
     use std::fmt::{self, Write};

components/style/properties/longhand/text.mako.rs

@@ -21,7 +21,8 @@ ${helpers.single_keyword("unicode-bidi",
 // FIXME: This prop should be animatable.
 <%helpers:longhand name="${'text-decoration' if product == 'servo' else 'text-decoration-line'}"
                    custom_cascade="${product == 'servo'}"
-                   animatable="False">
+                   animatable="False"
+                   disable_when_testing="True">
     use cssparser::ToCss;
     use std::fmt;
     use values::computed::ComputedValueAsSpecified;

components/style/properties/shorthand/text.mako.rs

@@ -8,7 +8,8 @@
                     sub_properties="text-decoration-color
                                     text-decoration-line
                                     text-decoration-style"
-                    products="gecko">
+                    products="gecko"
+                    disable_when_testing="True">
     use cssparser::Color as CSSParserColor;
     use properties::longhands::{text_decoration_color, text_decoration_line, text_decoration_style};
     use values::specified::CSSColor;

python/servo/testing_commands.py

@@ -210,14 +210,11 @@ class MachCommands(CommandBase):
 
         packages.discard('stylo')
 
-        args = ["cargo", "test"]
-        for crate in packages:
-            args += ["-p", "%s_tests" % crate]
-        args += test_patterns
-
-        features = self.servo_features()
-        if features:
-            args += ["--features", "%s" % ' '.join(features)]
+        has_style = True
+        try:
+            packages.remove('style')
+        except KeyError:
+            has_style = False
 
         env = self.build_env()
         env["RUST_BACKTRACE"] = "1"
@@ -230,6 +227,26 @@ class MachCommands(CommandBase):
             else:
                 env["RUSTFLAGS"] = "-C link-args=-Wl,--subsystem,windows"
 
+        features = self.servo_features()
+        if len(packages) > 0:
+            args = ["cargo", "test"]
+            for crate in packages:
+                args += ["-p", "%s_tests" % crate]
+            args += test_patterns
+
+            if features:
+                args += ["--features", "%s" % ' '.join(features)]
+            result = call(args, env=env, cwd=self.servo_crate())
+            if result != 0:
+                return result
+
+        # Run style tests with the testing feature
+        if has_style:
+            args = ["cargo", "test", "-p", "style_tests", "--features"]
+            if features:
+                args += ["%s" % ' '.join(features + ["testing"])]
+            else:
+                args += ["testing"]
             result = call(args, env=env, cwd=self.servo_crate())
             if result != 0:
                 return result