Add functional tests for being up-to-date

accurest-gradle-plugin/src/test/groovy/io/codearte/accurest/plugin/BasicFunctionalSpec.groovy

@@ -7,34 +7,40 @@ import spock.lang.Stepwise
 @Stepwise
 class BasicFunctionalSpec extends IntegrationSpec {
 
+	private static final String GENERATED_TEST = "build//generated-sources//accurest//accurest//PairIdSpec.groovy"
+	private static final String GENERATED_CLIENT_JSON_STUB = "build//production//bootSimple-stubs//repository//mappings//pairId//colleratePlacesFromTweet.json"
+	private static final String GROOVY_DSL_CONTRACT = "repository//mappings//com//ofg//twitter-places-analyzer//pairId//colleratePlacesFromTweet.groovy"
+	private static final String TEST_EXECUTION_XML_REPORT = "build/test-results/TEST-accurest.PairIdSpec.xml"
+
+	void setup() {
+		copyResources("functionalTest/bootSimple", "")
+		runTasksSuccessfully('clean')   //delete accidental output when previously importing SimpleBoot into Idea to tweak it
+	}
+
 	def "should pass basic flow"() {
+		given:
+			assert fileExists('build.gradle')
 		when:
-			copyResources("functionalTest/bootSimple", "")
-		then:
-			fileExists('build.gradle')
-		when:
-			def result = runTasksSuccessfully('clean', 'check') //clean to remove accidental output when importing SimpleBoot into Idea
+			def result = runTasksSuccessfully('check')
 		then:
 			result.wasExecuted(":generateWiremockClientStubs")
 			result.wasExecuted(":generateAccurest")
 
 		and: "tests generated"
-			fileExists("build/generated-sources/accurest/accurest/PairIdSpec.groovy")
+			fileExists(GENERATED_TEST)
 
 		and: "client stubs generated"
-			fileExists("build/production/bootSimple-stubs/repository/mappings/pairId/colleratePlacesFromTweet.json")
+			fileExists(GENERATED_CLIENT_JSON_STUB)
 
 		and: "generated tests executed"
-			fileExists("build/test-results/TEST-accurest.PairIdSpec.xml")
+			fileExists(TEST_EXECUTION_XML_REPORT)
 	}
 
 	def "should generate valid client json stubs for simple input"() {
-		given:
-			copyResources("functionalTest/bootSimple", "")
 		when:
 			runTasksSuccessfully('generateWiremockClientStubs')
 		then:
-			def generatedClientJsonStub = file("build/production/bootSimple-stubs/repository/mappings/pairId/colleratePlacesFromTweet.json").text
+			def generatedClientJsonStub = file(GENERATED_CLIENT_JSON_STUB).text
 			new JsonSlurper().parseText(generatedClientJsonStub) == new JsonSlurper().parseText("""
 {
     "request": {
@@ -55,4 +61,37 @@ class BasicFunctionalSpec extends IntegrationSpec {
 }
 """)
 	}
+
+	def "tasks should be up-to-date when appropriate"() {
+		given:
+			assert !fileExists(GENERATED_CLIENT_JSON_STUB)
+			assert !fileExists(TEST_EXECUTION_XML_REPORT)
+		when:
+			runTasksSuccessfully('generateWiremockClientStubs', 'generateAccurest')
+		then:
+			fileExists(GENERATED_CLIENT_JSON_STUB)
+			fileExists(GENERATED_TEST)
+
+		when: "running generation without change inputs"
+			def secondExecutionResult = runTasksSuccessfully('generateWiremockClientStubs', 'generateAccurest')
+
+		then: "tasks should be up-to-date"
+			secondExecutionResult.wasUpToDate(":generateWiremockClientStubs")
+			secondExecutionResult.wasUpToDate(":generateAccurest")
+
+		when: "inputs changed"
+			def groovyDslFile = file(GROOVY_DSL_CONTRACT)
+			groovyDslFile.text = groovyDslFile.text.replace("200", "599")
+
+		and: "tasks run"
+			def thirdExecutionResult = runTasksSuccessfully('generateWiremockClientStubs', 'generateAccurest')
+
+		then: "tasks should be reexecuted"
+			thirdExecutionResult.wasExecuted(":generateWiremockClientStubs")
+			thirdExecutionResult.wasExecuted(":generateAccurest")
+
+		and: "changes visible in generate files"
+			file(GENERATED_CLIENT_JSON_STUB).text.contains("599")
+			file(GENERATED_TEST).text.contains("599")
+	}
 }