From 6c728f2b02c4d1def86dc258b0baaf200f3e2811 Mon Sep 17 00:00:00 2001
From: Szczepan Faber <szczepiq@gmail.com>
Date: Thu, 9 Feb 2012 21:49:06 +0100
Subject: [PATCH] Spiked making performance testing outside of the gradle main
 project. It's not really possible as I need various things: 1. good way of
 running gradle (tooling api is almost there) 2. good way of using previous
 versions of gradle So... the performance testing probably goes under the main
 gradle project.

---
 performanceTest/build.gradle                  | 11 ++++-
 .../gradle/peformance/PerformanceTest.groovy  | 48 +++++++++++++++++--
 2 files changed, 54 insertions(+), 5 deletions(-)

diff --git a/performanceTest/build.gradle b/performanceTest/build.gradle
index fa846c1d9bf2..b07da1b149d1 100644
--- a/performanceTest/build.gradle
+++ b/performanceTest/build.gradle
@@ -7,6 +7,7 @@ idea.project.jdkName = '1.6'
 
 repositories {
     mavenCentral()
+    mavenRepo(url: 'http://repo.gradle.org/gradle/libs-releases-local')
 }
 
 configurations {
@@ -16,9 +17,15 @@ configurations {
 dependencies {
     junit 'junit:junit:4.10'
     groovy localGroovy()
+    testCompile 'junit:junit:4.10'
+
+    //spock
     testCompile 'org.spockframework:spock-core:0.5-groovy-1.8@jar',
-            'org.objenesis:objenesis:1.2', 'cglib:cglib-nodep:2.2',
-            'junit:junit:4.10'
+            'org.objenesis:objenesis:1.2', 'cglib:cglib-nodep:2.2'
+
+    //tooling api
+    testCompile 'org.gradle:gradle-tooling-api:1.0-milestone-7'
+    testRuntime 'org.slf4j:slf4j-simple:1.6.4'
 }
 
 task small(type: GeneratorTask, description: 'Generates a small project') {
diff --git a/performanceTest/src/test/groovy/org/gradle/peformance/PerformanceTest.groovy b/performanceTest/src/test/groovy/org/gradle/peformance/PerformanceTest.groovy
index 56f36fcfcc06..e1e78d9c5292 100644
--- a/performanceTest/src/test/groovy/org/gradle/peformance/PerformanceTest.groovy
+++ b/performanceTest/src/test/groovy/org/gradle/peformance/PerformanceTest.groovy
@@ -1,14 +1,56 @@
 package org.gradle.peformance
 
 import spock.lang.Specification
+import org.gradle.tooling.GradleConnector
 
 /**
  * by Szczepan Faber, created at: 2/9/12
  */
 class PerformanceTest extends Specification {
 
-    def "foo"() {
-        expect:
-        1==1
+    def "small project"() {
+        given:
+        def projectDir = findProjectDir("small")
+
+        when:
+        int m6result = executionTime {
+            def connection = GradleConnector.newConnector()
+                .forProjectDirectory(projectDir)
+                .searchUpwards(false)
+                .useGradleVersion("1.0-milestone-6")
+                .connect()
+
+            connection.newBuild().forTasks('clean', 'build').run()
+        }
+
+        int m7result = executionTime {
+            def connection = GradleConnector.newConnector()
+                .forProjectDirectory(projectDir)
+                .searchUpwards(false)
+                .useGradleVersion("1.0-milestone-7")
+                .connect()
+
+            connection.newBuild().forTasks('clean', 'build').run()
+        }
+
+        then:
+        m7result <= m6result
+    }
+
+    long executionTime(Closure operation) {
+        long before = System.currentTimeMillis()
+        operation()
+        return System.currentTimeMillis() - before
+    }
+
+    File findProjectDir(String name) {
+        def projectDir = new File("build/small").absoluteFile
+        if (!projectDir.isDirectory()) {
+            def message = "Looks like the sample '$name' was not generated.\n" +
+                "I've tried to find it at: $projectDir\n" +
+                "Please run 'gradle $name' to generate the sample."
+            assert false: message
+        }
+        projectDir
     }
 }