Add infrastructure for adding integration tests using testkit

1 files changed, 77 insertions, 0 deletions

diff --git a/src/integTest/groovy/frege/plugin/FregePluginIntegTest.groovy b/src/integTest/groovy/frege/plugin/FregePluginIntegTest.groovy
new file mode 100644
index 0000000..5c985e8
--- /dev/null
+++ b/src/integTest/groovy/frege/plugin/FregePluginIntegTest.groovy
@@ -0,0 +1,77 @@
+package frege.plugin
+
+import org.gradle.testkit.runner.GradleRunner
+import org.junit.Rule
+import org.junit.rules.TemporaryFolder
+import spock.lang.Specification
+
+import static org.gradle.testkit.runner.TaskOutcome.SUCCESS
+
+class FregePluginIntegTest extends Specification {
+
+    @Rule
+    final TemporaryFolder testProjectDir = new TemporaryFolder()
+    File buildFile
+
+    List<File> pluginClasspath
+
+    def setup() {
+        buildFile = testProjectDir.newFile('build.gradle')
+
+        def pluginClasspathResource = getClass().classLoader.findResource("plugin-classpath.txt")
+        if (pluginClasspathResource == null) {
+            // try again via file reference
+            pluginClasspathResource = new File("build/createClasspathManifest/plugin-classpath.txt")
+            if (pluginClasspathResource == null) {
+                throw new IllegalStateException("Did not find plugin classpath resource, run `integTestClasses` build task.")
+            }
+        }
+        pluginClasspath = pluginClasspathResource.readLines().collect { new File(it) }
+    }
+
+    def "can compile frege production code"() {
+        given:
+        buildFile << """
+            plugins {
+                id 'org.frege-lang'
+            }
+
+            repositories {
+                jcenter()
+            }
+
+            dependencies {
+                compile "org.frege-lang:frege:3.22.367-g2737683"
+            }
+
+            task sayHello(type: JavaExec){
+                classpath = sourceSets.main.runtimeClasspath
+                main = 'HelloFrege'
+            }
+
+        """
+
+        testProjectDir.newFolder("src", "main", "frege")
+        def fregeSourceFile = testProjectDir.newFile("src/main/frege/HelloFrege.fr")
+
+        fregeSourceFile << """
+module HelloFrege where
+
+greeting = "Hello Frege!"
+
+main _ = do
+    println greeting
+"""
+
+        when:
+        def result = GradleRunner.create()
+                .withProjectDir(testProjectDir.root)
+                .withArguments('sayHello')
+                .withPluginClasspath(pluginClasspath)
+                .build()
+
+        then:
+        result.output.contains("Hello Frege!")
+        result.task(":sayHello").outcome == SUCCESS
+    }
+}
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