reset environment in test

Author: graemerocher

grails-core/src/test/groovy/org/grails/config/YamlPropertySourceLoaderSpec.groovy

@@ -1,12 +1,18 @@
 package org.grails.config
 
+import grails.util.Environment
 import org.grails.config.yaml.YamlPropertySourceLoader
 import org.springframework.core.io.FileSystemResource
 import org.springframework.core.io.Resource
 import spock.lang.Specification
 
 class YamlPropertySourceLoaderSpec extends Specification {
 
+    void setup() {
+        // reset environment
+        System.setProperty(Environment.KEY, "")
+    }
+    
     def "ensure the config for environment is merged with single environment block"() {
         given: "A PropertySourcesConfig instance"
         def propertySource = new YamlPropertySourceLoader()