Fixed conversion of GString to String; fixes gh-762

spring-cloud-contract-spec/src/main/groovy/org/springframework/cloud/contract/spec/internal/Request.groovy

@@ -101,6 +101,10 @@ class Request extends Common {
 		this.urlPath = new UrlPath(path)
 	}
 
+	void urlPath(GString path) {
+		this.urlPath = new UrlPath(path)
+	}
+
 	void urlPath(DslProperty path) {
 		this.urlPath = new UrlPath(path)
 	}
@@ -111,6 +115,12 @@ class Request extends Common {
 		closure()
 	}
 
+	void urlPath(GString path, @DelegatesTo(UrlPath) Closure closure) {
+		this.urlPath = new UrlPath(path)
+		closure.delegate = urlPath
+		closure()
+	}
+
 	void urlPath(DslProperty path, @DelegatesTo(UrlPath) Closure closure) {
 		this.urlPath = new UrlPath(path)
 		closure.delegate = urlPath

spring-cloud-contract-spec/src/main/groovy/org/springframework/cloud/contract/spec/internal/UrlPath.groovy

@@ -35,6 +35,10 @@ class UrlPath extends Url {
 		super(path)
 	}
 
+	UrlPath(GString path) {
+		super(path)
+	}
+
 	UrlPath(DslProperty path) {
 		super(path)
 	}

spring-cloud-contract-verifier/src/test/groovy/org/springframework/cloud/contract/verifier/builder/MockMvcMethodBodyBuilderSpec.groovy

@@ -626,7 +626,7 @@ class MockMvcMethodBodyBuilderSpec extends Specification implements WireMockStub
 		Contract contractDsl = Contract.make {
 			request {
 				method 'GET'
-				urlPath('/users') {
+				urlPath("/users/${value(regex("1"))}") {
 					queryParameters {
 						parameter 'limit': $(consumer(equalTo("20")), producer(equalTo("10")))
 						parameter 'offset': $(consumer(containing("20")), producer(equalTo("20")))
@@ -665,7 +665,7 @@ class MockMvcMethodBodyBuilderSpec extends Specification implements WireMockStub
 		test.contains('''.queryParam("age","99")''')
 		test.contains('''.queryParam("name","Denis.Stepanov")''')
 		test.contains('''.queryParam("email","bob@email.com")''')
-		test.contains('''.get("/users")''')
+		test.contains('''.get("/users/1")''')
 		test.contains('assertThatJson(parsedJson).field("[\'property1\']").isEqualTo("a")')
 		test.contains('assertThatJson(parsedJson).field("[\'property2\']").isEqualTo("b")')
 		and: