| Index: tests/compiler/dart2js/simple_inferrer_test.dart
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| diff --git a/tests/compiler/dart2js/simple_inferrer_test.dart b/tests/compiler/dart2js/simple_inferrer_test.dart
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| index 295784ad3b085645d259301a5053681883ad78a0..c6f97d509d1f08dd34f45ad6599828347c839842 100644
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| --- a/tests/compiler/dart2js/simple_inferrer_test.dart
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| +++ b/tests/compiler/dart2js/simple_inferrer_test.dart
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| @@ -729,7 +729,7 @@ void main() {
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|    asyncTest(() => compiler.run(uri).then((_) {
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|      var commonMasks = compiler.commonMasks;
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|      var typesInferrer = compiler.globalInference.typesInferrer;
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| -    var world = compiler.world;
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| +    var world = compiler.closedWorld;
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|  
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|      checkReturn(String name, type) {
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|        var element = findElement(compiler, name);
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| @@ -758,7 +758,7 @@ void main() {
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|      checkReturn('returnEmpty1', const TypeMask.nonNullEmpty());
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|      checkReturn('returnEmpty2', const TypeMask.nonNullEmpty());
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|      TypeMask intType = new TypeMask.nonNullSubtype(
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| -        compiler.coreClasses.intClass, compiler.world);
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| +        compiler.coreClasses.intClass, compiler.closedWorld);
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|      checkReturn('testIsCheck1', intType);
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|      checkReturn('testIsCheck2', intType);
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|      checkReturn('testIsCheck3', intType.nullable());
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| @@ -791,7 +791,7 @@ void main() {
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|      checkReturn('testIf1', commonMasks.uint31Type.nullable());
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|      checkReturn('testIf2', commonMasks.uint31Type.nullable());
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|      checkReturn('returnAsString', new TypeMask.subtype(
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| -        compiler.coreClasses.stringClass, compiler.world));
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| +        compiler.coreClasses.stringClass, compiler.closedWorld));
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|      checkReturn('returnIntAsNum', commonMasks.uint31Type);
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|      checkReturn('returnAsTypedef', commonMasks.functionType.nullable());
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|      checkReturn('returnTopLevelGetter', commonMasks.uint31Type);
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| @@ -799,7 +799,7 @@ void main() {
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|      checkReturn('testLabeledIf', commonMasks.uint31Type.nullable());
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|      checkReturn('testSwitch1', simplify(
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|          commonMasks.intType
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| -            .union(commonMasks.doubleType, compiler.world)
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| +            .union(commonMasks.doubleType, compiler.closedWorld)
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|              .nullable(),
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|          compiler));
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|      checkReturn('testSwitch2', commonMasks.uint31Type);
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| 
 |