Added test for old Gradle version

pride/src/integTest/groovy/com/prezi/pride/test/AbstractIntegrationSpec.groovy

@@ -123,7 +123,8 @@ class AbstractIntegrationSpec extends Specification {
 	}
 
 	Process gradle(Map<String, ?> options, List<?> arguments, Closure check = null) {
-		def commandLine = ["$rootDir/gradlew", *arguments]
+		def gradlewDir = options.gradlewDir ?: options.workingDir ?: dir
+		def commandLine = ["$gradlewDir/gradlew", *arguments]
 		exec options, commandLine, check
 	}
 

pride/src/integTest/groovy/com/prezi/pride/test/PrideInitIntegrationTest.groovy

@@ -3,12 +3,7 @@ package com.prezi.pride.test
 class PrideInitIntegrationTest extends AbstractIntegrationSpec {
 	def "pride init"() {
 		given:
-		exec workingDir: "git-module", "git", "init"
-		exec workingDir: "git-module", "git", "config", "user.email", "[email protected]"
-		exec workingDir: "git-module", "git", "config", "user.name", "Test User"
-		exec workingDir: "git-module", "git", "add", "-A"
-		exec workingDir: "git-module", "git", "commit", "--message", "Initial"
-		exec workingDir: "git-module", "git", "remote", "add", "origin", "[email protected]:prezi/test"
+		setupModules()
 
 		when:
 		pride "init", "--gradle-version", defaultGradleVersion
@@ -70,4 +65,26 @@ modules.0.vcs = git
 """)
 
 	}
+
+	def "using with earlier Gradle versions produces error"() {
+		given:
+		setupModules()
+		pride "init", "--gradle-version", "2.4"
+
+		expect:
+		gradle(["tasks"]) { Process process ->
+			assert process.err.text.contains("""Pride requires Gradle version 2.5 or later. If you want to use an earlier Gradle version, try Pride 0.10.""")
+			process.waitForProcessOutput()
+			assert process.exitValue() != 0
+		}
+	}
+
+	def setupModules() {
+		exec workingDir: "git-module", "git", "init"
+		exec workingDir: "git-module", "git", "config", "user.email", "[email protected]"
+		exec workingDir: "git-module", "git", "config", "user.name", "Test User"
+		exec workingDir: "git-module", "git", "add", "-A"
+		exec workingDir: "git-module", "git", "commit", "--message", "Initial"
+		exec workingDir: "git-module", "git", "remote", "add", "origin", "[email protected]:prezi/test"
+	}
 }

pride/src/integTest/groovy/com/prezi/pride/test/TransitiveResolutionIntegrationTest.groovy

@@ -11,8 +11,8 @@ class TransitiveResolutionIntegrationTest extends AbstractIntegrationSpec {
 		def moduleBDir = file("module-b")
 
 		FileUtils.forceMkdir repoDir
-		gradle workingDir: moduleADir, "uploadArchives"
-		gradle workingDir: moduleBDir, "uploadArchives"
+		gradle gradlewDir: rootDir, workingDir: moduleADir, "uploadArchives"
+		gradle gradlewDir: rootDir, workingDir: moduleBDir, "uploadArchives"
 		pride workingDir: prideDir, "init", "-v", "--gradle-version", defaultGradleVersion
 
 		expect: