Add scripted tests for classloader-cache

Normally I'd include these with the previous commit, but the diff is so large that I put them in their own commit. The tests handle 5 scenarios: 1) akka-actor-system -- a project that has Akka as a dependency and a simple main method that creates and terminates an ActorSystem. What is interesting about this test is that if scriptedBufferLog := false, we notice that the first call to run is slow, but subsequent calls to run and test are fast. The test does at least ensure that recycling the runtime layer in test works ok. 2) jni -- verifies that a project with native libraries will be able to load the library with each run. It actually swaps out the underlying library so that the it really ensures that the library is reloaded between runs. 3) library-mismatch -- verifies that the layered classloaders can work when the test dependencies are incompatible with the runtime dependencies. In this test, the test dependencies use an api in a library called foo-lib that isn't available in the version used by the runtime dependencies. Because of this incompatibility, the test will not work if Test / layeringStrategy := LayeringStrategy.Full. 4) scalatest -- verifies that a test runs using the scalatest framework 5) utest -- verifies that a test runs using the utest framework The reason for (4) and (5) is to ensure that both the in sourced test frameworks and external frameworks work with the new loaders.
2026-10-06 18:14:04 +02:00 · 2019-01-30 08:55:22 -08:00
parent a06f5435c6
commit aca541898d
111 changed files with 653 additions and 2 deletions
@@ -23,7 +23,7 @@ env:
    - SBT_CMD="scripted source-dependencies/*1of3"
    - SBT_CMD="scripted source-dependencies/*2of3"
    - SBT_CMD="scripted source-dependencies/*3of3"
-    - SBT_CMD="scripted tests/* watch/*"
+    - SBT_CMD="scripted tests/* watch/* classloader-cache/*"
    - SBT_CMD="repoOverrideTest:scripted dependency-management/*"

 matrix:
@@ -53,7 +53,7 @@ install:

 script:
  # It doesn't need that much memory because compile and run are forked
-  - sbt -J-XX:ReservedCodeCacheSize=128m -J-Xmx800M -J-Xms800M -J-server "$SBT_CMD"
+  - sbt -Dsbt.version=1.2.6 -J-XX:ReservedCodeCacheSize=128m -J-Xmx800M -J-Xms800M -J-server "$SBT_CMD"

 before_cache:
  - find $HOME/.ivy2 -name "ivydata-*.properties" -delete
@@ -0,0 +1,9 @@
+val akkaTest = (project in file(".")).settings(
+  name := "akka-test",
+  scalaVersion := "2.12.7",
+  libraryDependencies ++= Seq(
+    "com.typesafe.akka" %% "akka-actor" % "2.5.16",
+    "com.lihaoyi" %% "utest" % "0.6.6" % "test"
+  ),
+  testFrameworks := Seq(new TestFramework("utest.runner.Framework"))
+)
@@ -0,0 +1,15 @@
+package sbt.scripted
+
+import akka.actor.ActorSystem
+import scala.concurrent.Await
+import scala.concurrent.duration._
+
+object AkkaTest {
+  def main(args: Array[String]): Unit = {
+    val now = System.nanoTime
+    val system = ActorSystem("akka")
+    Await.result(system.terminate(), 5.seconds)
+    val elapsed = System.nanoTime - now
+    println(s"Run took ${elapsed / 1.0e6} ms")
+  }
+}
@@ -0,0 +1,12 @@
+package sbt.scripted
+
+import utest._
+
+object AkkaPerfTest extends TestSuite {
+  val tests: Tests = Tests {
+    'run - {
+      AkkaTest.main(Array.empty[String])
+      1 ==> 1
+    }
+  }
+}
@@ -0,0 +1,7 @@
+> set Test / layeringStrategy := LayeringStrategy.Full
+
+> run
+
+> test
+
+> test
@@ -0,0 +1,38 @@
+import java.nio.file._
+import scala.collection.JavaConverters._
+
+val copyTestResources = inputKey[Unit]("Copy the native libraries to the base directory")
+val appendToLibraryPath = taskKey[Unit]("Append the base directory to the java.library.path system property")
+val dropLibraryPath = taskKey[Unit]("Drop the last path from the java.library.path system property")
+val wrappedRun = taskKey[Unit]("Run with modified java.library.path")
+val wrappedTest = taskKey[Unit]("Test with modified java.library.path")
+
+def wrap(task: InputKey[Unit]): Def.Initialize[Task[Unit]] =
+  Def.sequential(appendToLibraryPath, task.toTask(""), dropLibraryPath)
+
+val root = (project in file(".")).settings(
+  scalaVersion := "2.12.7",
+  javacOptions ++= Seq("-source", "1.8", "-target", "1.8", "-h",
+  sourceDirectory.value.toPath.resolve("main/native/include").toString),
+  libraryDependencies += "com.lihaoyi" %% "utest" % "0.6.6" % "test",
+  testFrameworks := Seq(new TestFramework("utest.runner.Framework")),
+  copyTestResources := {
+    val key = Def.spaceDelimited().parsed.head
+    val base = baseDirectory.value.toPath
+    val resources = (baseDirectory.value / "src" / "main" / "resources" / key).toPath
+    Files.walk(resources).iterator.asScala.foreach { p =>
+      Files.copy(p, base.resolve(p.getFileName), StandardCopyOption.REPLACE_EXISTING)
+    }
+  },
+  appendToLibraryPath := {
+    val cp = System.getProperty("java.library.path", "").split(":")
+    val newCp = if (cp.contains(".")) cp else cp :+ "."
+    System.setProperty("java.library.path", newCp.mkString(":"))
+  },
+  dropLibraryPath := {
+    val cp = System.getProperty("java.library.path", "").split(":").dropRight(1)
+    System.setProperty("java.library.path", cp.mkString(":"))
+  },
+  wrappedRun := wrap(Runtime / run).value,
+  wrappedTest := wrap(Test / testOnly).value
+)
@@ -0,0 +1,15 @@
+package sbt
+
+import java.nio.file._
+import utest._
+
+object JniLibraryTest extends TestSuite {
+  val tests = Tests {
+    'load - {
+      'native - {
+        System.loadLibrary("sbt-jni-library-test0")
+        new JniLibrary().getIntegerValue ==> 2
+      }
+    }
+  }
+}
@@ -0,0 +1,5 @@
+package sbt;
+
+final class JniLibrary {
+  public native int getIntegerValue();
+}
@@ -0,0 +1,61 @@
+TARGET_DIR := ../../../target
+BUILD_DIR := $(TARGET_DIR)/build
+NATIVE_DIR := native/$(shell uname -sm | cut -d ' ' -f2 | tr '[:upper:]' '[:lower:]')
+LIB_DIR := ../resources/$(NATIVE_DIR)
+LIB_NAME := sbt-jni-library-test0
+POSIX_LIB_NAME := lib$(LIB_NAME)
+SOURCE := sbt_JniLibrary
+CC := clang
+
+UNAME_S := $(shell uname -s)
+
+ifeq ($(UNAME_S),Darwin)
+	JNI_INCLUDE := -I$(shell mdfind -name jni.h | grep jdk1.8 | tail -n 1 | xargs dirname)\
+		-I$(shell mdfind -name jni_md.h | grep jdk1.8 | tail -n 1 | xargs dirname)
+	LD := /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
+	OBJS := $(BUILD_DIR)/x86_64/darwin/$(SOURCE).o
+	LIBS := $(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).dylib
+endif
+
+ifeq ($(UNAME_S), Linux)
+	BASE_INCLUDE := $(shell locate jni.h | tail -n 1 | xargs dirname)
+	JNI_INCLUDE := -I$(BASE_INCLUDE) -I$(BASE_INCLUDE)/linux
+	OBJS := $(BUILD_DIR)/x86_64/linux/$(SOURCE).o
+	LIBS := $(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).so
+endif
+
+LINUX_CCFLAGS := -fPIC
+LINUX_LDFLAGS := -fPIC -shared
+
+CCFLAGS := -I./../include $(JNI_INCLUDE) -Wno-unused-command-line-argument -std=c++11 -O3
+
+all: $(LIBS)
+
+.PHONY: clean all
+
+$(BUILD_DIR)/x86_64/linux/$(SOURCE).o: $(SOURCE).cc
+	mkdir -p $(BUILD_DIR)/x86_64/linux; \
+	$(CC) -c $< $(CCFLAGS) $(JNI_INCLUDE) -fPIC -o $@
+
+$(BUILD_DIR)/x86_64/darwin/$(SOURCE).o: $(SOURCE).cc
+	mkdir -p $(BUILD_DIR)/x86_64/darwin; \
+	$(CC) -c $< $(CCFLAGS) -framework Carbon -o $@
+
+$(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).dylib: $(BUILD_DIR)/x86_64/darwin/$(SOURCE).o
+	mkdir -p $(TARGET_DIR)/x86_64; \
+	$(LD) -dynamiclib -framework Carbon $(CCFLAGS) -Wl,-headerpad_max_install_names -install_name @rpath/$(POSIX_LIB_NAME) \
+	$(BUILD_DIR)/x86_64/darwin/$(SOURCE).o  \
+	 -o $@ ; \
+	mkdir -p ../../resources/1; \
+	cp $(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).dylib ../../resources/1
+
+
+
+$(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).so: $(BUILD_DIR)/x86_64/linux/$(SOURCE).o
+	mkdir -p $(TARGET_DIR)/x86_64; \
+	$(CC) -shared $< $(CCFLAGS) -Wl,-headerpad_max_install_names -o $@; \
+	mkdir -p ../../resources/1; \
+	cp $(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).so ../../resources/1;
+
+clean:
+	rm -rf $(TARGET_DIR)/build $(TARGET_DIR)/$(NATIVE)
@@ -0,0 +1,15 @@
+#include <jni.h>
+#include "sbt_JniLibrary.h"
+
+extern "C" {
+
+/*
+ * Class:     sbt_JniLibrary
+ * Method:    getIntegerValue
+ * Signature: ()I
+ */
+JNIEXPORT jint JNICALL Java_sbt_JniLibrary_getIntegerValue
+  (JNIEnv *env, jobject obj) {
+    return 1;
+  }
+}
@@ -0,0 +1,61 @@
+TARGET_DIR := ../../../target
+BUILD_DIR := $(TARGET_DIR)/build
+NATIVE_DIR := native/$(shell uname -sm | cut -d ' ' -f2 | tr '[:upper:]' '[:lower:]')
+LIB_DIR := ../resources/$(NATIVE_DIR)
+LIB_NAME := sbt-jni-library-test0
+POSIX_LIB_NAME := lib$(LIB_NAME)
+SOURCE := sbt_JniLibrary
+CC := clang
+
+UNAME_S := $(shell uname -s)
+
+ifeq ($(UNAME_S),Darwin)
+	JNI_INCLUDE := -I$(shell mdfind -name jni.h | grep jdk1.8 | tail -n 1 | xargs dirname)\
+		-I$(shell mdfind -name jni_md.h | grep jdk1.8 | tail -n 1 | xargs dirname)
+	LD := /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
+	OBJS := $(BUILD_DIR)/x86_64/darwin/$(SOURCE).o
+	LIBS := $(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).dylib
+endif
+
+ifeq ($(UNAME_S), Linux)
+	BASE_INCLUDE := $(shell locate jni.h | tail -n 1 | xargs dirname)
+	JNI_INCLUDE := -I$(BASE_INCLUDE) -I$(BASE_INCLUDE)/linux
+	OBJS := $(BUILD_DIR)/x86_64/linux/$(SOURCE).o
+	LIBS := $(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).so
+endif
+
+LINUX_CCFLAGS := -fPIC
+LINUX_LDFLAGS := -fPIC -shared
+
+CCFLAGS := -I./../include $(JNI_INCLUDE) -Wno-unused-command-line-argument -std=c++11 -O3
+
+all: $(LIBS)
+
+.PHONY: clean all
+
+$(BUILD_DIR)/x86_64/linux/$(SOURCE).o: $(SOURCE).cc
+	mkdir -p $(BUILD_DIR)/x86_64/linux; \
+	$(CC) -c $< $(CCFLAGS) $(JNI_INCLUDE) -fPIC -o $@
+
+$(BUILD_DIR)/x86_64/darwin/$(SOURCE).o: $(SOURCE).cc
+	mkdir -p $(BUILD_DIR)/x86_64/darwin; \
+	$(CC) -c $< $(CCFLAGS) -framework Carbon -o $@
+
+$(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).dylib: $(BUILD_DIR)/x86_64/darwin/$(SOURCE).o
+	mkdir -p $(TARGET_DIR)/x86_64; \
+	$(LD) -dynamiclib -framework Carbon $(CCFLAGS) -Wl,-headerpad_max_install_names -install_name @rpath/$(POSIX_LIB_NAME) \
+	$(BUILD_DIR)/x86_64/darwin/$(SOURCE).o  \
+	 -o $@ ; \
+	mkdir -p ../../resources/2; \
+	cp $(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).dylib ../../resources/2
+
+
+
+$(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).so: $(BUILD_DIR)/x86_64/linux/$(SOURCE).o
+	mkdir -p $(TARGET_DIR)/x86_64; \
+	$(CC) -shared $< $(CCFLAGS) -Wl,-headerpad_max_install_names -o $@; \
+	mkdir -p ../../resources/2; \
+	cp $(TARGET_DIR)/x86_64/$(POSIX_LIB_NAME).so ../../resources/2;
+
+clean:
+	rm -rf $(TARGET_DIR)/build $(TARGET_DIR)/$(NATIVE)
@@ -0,0 +1,15 @@
+#include <jni.h>
+#include "sbt_JniLibrary.h"
+
+extern "C" {
+
+/*
+ * Class:     sbt_JniLibrary
+ * Method:    getIntegerValue
+ * Signature: ()I
+ */
+JNIEXPORT jint JNICALL Java_sbt_JniLibrary_getIntegerValue
+  (JNIEnv *env, jobject obj) {
+    return 2;
+  }
+}
@@ -0,0 +1,21 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+#include <jni.h>
+/* Header for class sbt_JniLibrary */
+
+#ifndef _Included_sbt_JniLibrary
+#define _Included_sbt_JniLibrary
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * Class:     sbt_JniLibrary
+ * Method:    getIntegerValue
+ * Signature: ()I
+ */
+JNIEXPORT jint JNICALL Java_sbt_JniLibrary_getIntegerValue
+  (JNIEnv *, jobject);
+
+#ifdef __cplusplus
+}
+#endif
+#endif
@@ -0,0 +1,12 @@
+package sbt
+
+import java.nio.file._
+import scala.collection.JavaConverters._
+
+object TestMain {
+  def main(args: Array[String]): Unit = {
+    val libraryPath = System.getProperty("java.library.path")
+    System.loadLibrary("sbt-jni-library-test0")
+    println(s"Native value is ${new JniLibrary().getIntegerValue}")
+  }
+}
@@ -0,0 +1,15 @@
+package sbt
+
+import java.nio.file._
+import utest._
+
+object JniLibraryTest extends TestSuite {
+  val tests = Tests {
+    'load - {
+      'native - {
+        System.loadLibrary("sbt-jni-library-test0")
+        new JniLibrary().getIntegerValue ==> 1
+      }
+    }
+  }
+}
@@ -0,0 +1,6 @@
+> copyTestResources 1
+> wrappedRun
+> wrappedTest
+> copyTestResources 2
+$ copy-file changes/JniLibraryTest.scala src/test/scala/sbt/JniLibraryTest.scala
+> wrappedTest
@@ -0,0 +1,9 @@
+val snapshot = (project in file(".")).settings(
+  name := "mismatched-libraries",
+  scalaVersion := "2.12.7",
+  libraryDependencies ++= Seq("com.lihaoyi" %% "utest" % "0.6.6" % "test"),
+  testFrameworks := Seq(TestFramework("utest.runner.Framework")),
+  resolvers += "Local Maven" at file("libraries/ivy").toURI.toURL.toString,
+  libraryDependencies += "sbt" % "transitive-lib" % "0.1.0",
+  libraryDependencies += "sbt" % "foo-lib" % "0.2.0" % "test",
+)
@@ -0,0 +1,11 @@
+name := "foo-lib"
+
+organization := "sbt"
+
+publishTo := Some(Resolver.file("test-resolver", file("..").getCanonicalFile / "ivy"))
+
+version := "0.1.0"
+
+crossPaths := false
+
+autoScalaLibrary := false
@@ -0,0 +1 @@
+sbt.version=1.2.6
@@ -0,0 +1,7 @@
+package sbt.foo;
+
+public class Foo {
+  static public int x() {
+    return 1;
+  }
+}
@@ -0,0 +1,11 @@
+name := "foo-lib"
+
+organization := "sbt"
+
+publishTo := Some(Resolver.file("test-resolver", file("..").getCanonicalFile / "ivy"))
+
+version := "0.2.0"
+
+crossPaths := false
+
+autoScalaLibrary := false
@@ -0,0 +1 @@
+sbt.version=1.2.6
@@ -0,0 +1,10 @@
+package sbt.foo;
+
+public class Foo {
+  static public int x() {
+    return 2;
+  }
+  static public int y() {
+    return 3;
+  }
+}
@@ -0,0 +1 @@
+66124717bb8840ce6f60567b19634a4b
@@ -0,0 +1 @@
+ca2193d86495f120496370cf2e75355f2b10b2a3
@@ -0,0 +1 @@
+8bb4c394490df92c43361e47d98cba52
@@ -0,0 +1 @@
+86ce6f4d12e075e8ef4ba80b671783673a8a0443
@@ -0,0 +1 @@
+4cd195abad8639ba6df345c125068058
@@ -0,0 +1 @@
+e18f4c7a4b52d288733f123008d98985610da4f3
@@ -0,0 +1,13 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>sbt</groupId>
+    <artifactId>foo-lib</artifactId>
+    <packaging>jar</packaging>
+    <description>foo-lib</description>
+    <version>0.1.0</version>
+    <name>foo-lib</name>
+    <organization>
+        <name>sbt</name>
+    </organization>
+</project>
@@ -0,0 +1 @@
+22ebca3d8b32a4c0cb40341501b798e2
@@ -0,0 +1 @@
+575258d8c9fecff7e8beefee2637c2928328e0dc
@@ -0,0 +1 @@
+ce4dcb6be9c11c1356e6aeaa024c80f1
@@ -0,0 +1 @@
+cc1a6b548cb9efd6e43c7fb5fa44728fc3f50d45
@@ -0,0 +1 @@
+f18c726e5009cf205ca83cf96a28345b
@@ -0,0 +1 @@
+af0ac149e4c810884bb921bb3826e495faa5854b
@@ -0,0 +1 @@
+fcadc4b2d6965cec0f5e5efb0a59226d
@@ -0,0 +1 @@
+585422ad5196b83f83bbca644e62a39a2e4171e0
@@ -0,0 +1,13 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>sbt</groupId>
+    <artifactId>foo-lib</artifactId>
+    <packaging>jar</packaging>
+    <description>foo-lib</description>
+    <version>0.2.0</version>
+    <name>foo-lib</name>
+    <organization>
+        <name>sbt</name>
+    </organization>
+</project>
@@ -0,0 +1 @@
+790acd1d77316ff2c0310bb88d01dc72
@@ -0,0 +1 @@
+94eec0571d936004eb5682b8b12268d1bcb2be40
@@ -0,0 +1 @@
+31f61c992ede7185d70d7c8a9ed19340
@@ -0,0 +1 @@
+3083e0439d988b1cce30be566f8c95448c310eca
@@ -0,0 +1 @@
+b9e2ead915294bf9e79622fe4ad9eadb
@@ -0,0 +1 @@
+5454c981af36713e2f0cedce98a83da2b0e4b982
@@ -0,0 +1 @@
+c7b4fbba100656a2798c39ca1d88317f
@@ -0,0 +1 @@
+f0fcc50b65e83f42210bbd3f366e2cc439177aa8
@@ -0,0 +1,20 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>sbt</groupId>
+    <artifactId>transitive-lib</artifactId>
+    <packaging>jar</packaging>
+    <description>transitive-lib</description>
+    <version>0.1.0</version>
+    <name>transitive-lib</name>
+    <organization>
+        <name>sbt</name>
+    </organization>
+    <dependencies>
+        <dependency>
+            <groupId>sbt</groupId>
+            <artifactId>foo-lib</artifactId>
+            <version>0.1.0</version>
+        </dependency>
+    </dependencies>
+</project>
@@ -0,0 +1 @@
+460393fd256f121413f943d085887278
@@ -0,0 +1 @@
+4cb84c1daf7152544065849db0c1ce2d8d47c334
@@ -0,0 +1,15 @@
+name := "transitive-lib"
+
+organization := "sbt"
+
+resolvers += "Local Maven" at file("../ivy").getCanonicalFile.toURI.toURL.toString
+
+publishTo := Some(Resolver.file("test-resolver", file("..").getCanonicalFile / "ivy"))
+
+version := "0.1.0"
+
+libraryDependencies += "sbt" % "foo-lib" % "0.1.0"
+
+crossPaths := false
+
+autoScalaLibrary := false
@@ -0,0 +1 @@
+sbt.version=1.2.6
@@ -0,0 +1,7 @@
+package sbt.transitive;
+
+public class Transitive {
+  public static int x() {
+    return sbt.foo.Foo.x();
+  }
+}
@@ -0,0 +1,7 @@
+package sbt
+
+object TestMain {
+  def main(args: Array[String]) {
+    println(transitive.Transitive.x)
+  }
+}
@@ -0,0 +1,11 @@
+package sbt
+
+import utest._
+
+object MismatchedLibrariesTest extends TestSuite {
+  val tests: Tests = Tests {
+    'check - {
+      assert(foo.Foo.y == 3)
+    }
+  }
+}
@@ -0,0 +1,15 @@
+> set Test / layeringStrategy := LayeringStrategy.Full
+
+> run
+
+# This fails because the runtime layer includes an old version of the foo-lib library that doesn't
+# have the sbt.foo.Foo.y method defined.
+> test
+
+> set Test / layeringStrategy := LayeringStrategy.TestDependencies
+
+> run
+
+> test
+
+> test
@@ -0,0 +1,3 @@
+val test = (project in file(".")).settings(
+  libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.4" % "test"
+)
@@ -0,0 +1,9 @@
+package sbt
+
+import org.scalatest.{ FlatSpec, Matchers }
+
+class ScalatestTest extends FlatSpec with Matchers {
+  "scalatest" should "fail" in {
+    1 shouldBe 2
+  }
+}
@@ -0,0 +1,9 @@
+package sbt
+
+import org.scalatest.{ FlatSpec, Matchers }
+
+class ScalatestTest extends FlatSpec with Matchers {
+  "scalatest" should "work" in {
+    1 shouldBe 1
+  }
+}
@@ -0,0 +1,5 @@
+> test
+
+$ copy-file changes/ScalatestTest.scala src/test/scala/sbt/ScalatestTest.scala
+
+-> test
@@ -0,0 +1,24 @@
+import java.nio.file.Files
+import java.nio.file.attribute.FileTime
+
+import scala.collection.JavaConverters._
+val rewriteIvy = inputKey[Unit]("Rewrite ivy directory")
+
+val snapshot = (project in file(".")).settings(
+  name := "akka-test",
+  scalaVersion := "2.12.7",
+  libraryDependencies ++= Seq(
+    "com.lihaoyi" %% "utest" % "0.6.6" % "test"
+  ),
+  testFrameworks += TestFramework("utest.runner.Framework"),
+  resolvers += "Local Maven" at file("ivy").toURI.toURL.toString,
+  libraryDependencies += "sbt" %% "foo-lib" % "0.1.0-SNAPSHOT",
+  rewriteIvy := {
+    val dir = Def.spaceDelimited().parsed.head
+    sbt.IO.delete(file("ivy"))
+    sbt.IO.copyDirectory(file(s"libraries/library-$dir/ivy"), file("ivy"))
+    Files.walk(file("ivy").getCanonicalFile.toPath).iterator.asScala.foreach { f =>
+     Files.setLastModifiedTime(f, FileTime.fromMillis(System.currentTimeMillis + 3000))
+    }
+  }
+)
@@ -0,0 +1,5 @@
+name := "foo-lib"
+
+organization := "sbt"
+
+publishTo := Some(Resolver.file("test-resolver", file("").getCanonicalFile / "ivy"))
@@ -0,0 +1 @@
+397429ea4a937c9ad21268ac7f294c9b
@@ -0,0 +1 @@
+183362cade58c89ae813465e7c509a3346515e39
@@ -0,0 +1 @@
+9c46dbde2cd9c996c37c7ba4461eec7c
@@ -0,0 +1 @@
+b5725ff80281d86491166550058b56c6b0b7dd2d
@@ -0,0 +1 @@
+c39385e52b24880f549e1c01642ed010
@@ -0,0 +1 @@
+de497479331da6c5dff72b6c1cfa5fca1634933f
@@ -0,0 +1,20 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>sbt</groupId>
+    <artifactId>foo-lib_2.12</artifactId>
+    <packaging>jar</packaging>
+    <description>foo-lib</description>
+    <version>0.1.0-SNAPSHOT</version>
+    <name>foo-lib</name>
+    <organization>
+        <name>sbt</name>
+    </organization>
+    <dependencies>
+        <dependency>
+            <groupId>org.scala-lang</groupId>
+            <artifactId>scala-library</artifactId>
+            <version>2.12.7</version>
+        </dependency>
+    </dependencies>
+</project>
@@ -0,0 +1 @@
+ada0c2e0276459449bf25a4f99aab3f6
@@ -0,0 +1 @@
+466216207d16d3e0daf0b2b18e67b20882f7f1b5
@@ -0,0 +1 @@
+sbt.version=1.2.6
@@ -0,0 +1,5 @@
+package sbt
+
+object Foo {
+  def x: Int = 1
+}
@@ -0,0 +1,5 @@
+name := "foo-lib"
+
+organization := "sbt"
+
+publishTo := Some(Resolver.file("test-resolver", file("").getCanonicalFile / "ivy"))
@@ -0,0 +1 @@
+260c1aab64032676c2c5b7d3c2a8e385
@@ -0,0 +1 @@
+44c78fcc5a2918bc4b33afb7419ac9d643bbac26
@@ -0,0 +1 @@
+39c7358e50708bc3da53ffe34eb876d6
@@ -0,0 +1 @@
+64e078d3fed51c0ef3d8abdb096ab1406e44ee1c
@@ -0,0 +1 @@
+763822fba242624131cf0706be56dabf
@@ -0,0 +1 @@
+22192abf4b52e85b9f979aa883ab42ce33bc51cd
--- a/Show More
+++ b/Show More