CSS: Correct misrepresentation of "auto" horizontal margins as 0

Fixes gh-2237
Closes gh-2276

(cherry picked from commit 214e1634ab9b1d13d53647dd5de3bdf7a091d49c)

Conflicts:
	src/css.js
	src/css/support.js
	test/unit/support.js

1 files changed, 40 insertions, 29 deletions

diff --git a/test/unit/support.js b/test/unit/support.js
index 8c6b0a28b..a62e57c73 100644
--- a/test/unit/support.js
+++ b/test/unit/support.js
@@ -70,7 +70,8 @@ testIframeWithCallback(
 			"optSelected": true,
 			"pixelMarginRight": true,
 			"pixelPosition": true,
-			"radioValue": true
+			"radioValue": true,
+			"reliableMarginLeft": true
 		};
 	} else if ( /(msie 10\.0|trident\/7\.0)/i.test( userAgent ) ) {
 		expected = {
@@ -86,7 +87,8 @@ testIframeWithCallback(
 			"optSelected": false,
 			"pixelMarginRight": true,
 			"pixelPosition": true,
-			"radioValue": false
+			"radioValue": false,
+			"reliableMarginLeft": true
 		};
 	} else if ( /msie 9\.0/i.test( userAgent ) ) {
 		expected = {
@@ -102,7 +104,8 @@ testIframeWithCallback(
 			"optSelected": false,
 			"pixelMarginRight": true,
 			"pixelPosition": true,
-			"radioValue": false
+			"radioValue": false,
+			"reliableMarginLeft": true
 		};
 	} else if ( /chrome/i.test( userAgent ) ) {
 
@@ -121,7 +124,8 @@ testIframeWithCallback(
 			"optSelected": true,
 			"pixelMarginRight": true,
 			"pixelPosition": true,
-			"radioValue": true
+			"radioValue": true,
+			"reliableMarginLeft": true
 		};
 	} else if ( /8\.0(\.\d+|) safari/i.test( userAgent ) ) {
 		expected = {
@@ -137,7 +141,8 @@ testIframeWithCallback(
 			"optSelected": true,
 			"pixelMarginRight": true,
 			"pixelPosition": false,
-			"radioValue": true
+			"radioValue": true,
+			"reliableMarginLeft": true
 		};
 	} else if ( /7\.0(\.\d+|) safari/i.test( userAgent ) ) {
 		expected = {
@@ -153,7 +158,8 @@ testIframeWithCallback(
 			"optSelected": true,
 			"pixelMarginRight": true,
 			"pixelPosition": false,
-			"radioValue": true
+			"radioValue": true,
+			"reliableMarginLeft": true
 		};
 	} else if ( /firefox/i.test( userAgent ) ) {
 		expected = {
@@ -169,7 +175,8 @@ testIframeWithCallback(
 			"optSelected": true,
 			"pixelMarginRight": true,
 			"pixelPosition": true,
-			"radioValue": true
+			"radioValue": true,
+			"reliableMarginLeft": false
 		};
 	} else if ( /iphone os 8/i.test( userAgent ) ) {
 		expected = {
@@ -185,7 +192,8 @@ testIframeWithCallback(
 			"optSelected": true,
 			"pixelMarginRight": true,
 			"pixelPosition": false,
-			"radioValue": true
+			"radioValue": true,
+			"reliableMarginLeft": true
 		};
 	} else if ( /iphone os (6|7)/i.test( userAgent ) ) {
 		expected = {
@@ -201,7 +209,8 @@ testIframeWithCallback(
 			"optSelected": true,
 			"pixelMarginRight": true,
 			"pixelPosition": false,
-			"radioValue": true
+			"radioValue": true,
+			"reliableMarginLeft": true
 		};
 	} else if ( /android 4\.[0-3]/i.test( userAgent ) ) {
 		expected = {
@@ -217,33 +226,35 @@ testIframeWithCallback(
 			"optSelected": true,
 			"pixelMarginRight": false,
 			"pixelPosition": false,
-			"radioValue": true
+			"radioValue": true,
+			"reliableMarginLeft": false
 		};
 	}
 
-	if ( expected ) {
-		QUnit.test( "Verify that the support tests resolve as expected per browser", function( assert ) {
-			var i, prop,
-				j = 0;
+	QUnit.test( "Verify that support tests resolve as expected per browser", function( assert ) {
+		if ( !expected ) {
+			assert.expect( 1 );
+			assert.ok( false, "Known client: " + userAgent );
+		}
 
-			for ( prop in computedSupport ) {
-				j++;
-			}
+		var i, prop,
+			j = 0;
 
-			assert.expect( j );
+		for ( prop in computedSupport ) {
+			j++;
+		}
 
-			for ( i in expected ) {
+		assert.expect( j );
 
-				// TODO check for all modules containing support properties
-				if ( jQuery.ajax || i !== "ajax" && i !== "cors" ) {
-					assert.equal( computedSupport[ i ], expected[ i ],
-						"jQuery.support['" + i + "']: " + computedSupport[ i ] +
-							", expected['" + i + "']: " + expected[ i ] );
-				} else {
-					assert.ok( true, "no ajax; skipping jQuery.support[' " + i + " ']" );
-				}
+		for ( i in expected ) {
+			if ( jQuery.ajax || i !== "ajax" && i !== "cors" ) {
+				assert.equal( computedSupport[ i ], expected[ i ],
+					"jQuery.support['" + i + "']: " + computedSupport[ i ] +
+						", expected['" + i + "']: " + expected[ i ] );
+			} else {
+				assert.ok( true, "no ajax; skipping jQuery.support['" + i + "']" );
 			}
-		} );
-	}
+		}
+	});
 
 } )();