Reproduce #2046

ivy/src/test/scala/BaseIvySpecification.scala

@@ -59,6 +59,11 @@ trait BaseIvySpecification extends Specification {
     IvyActions.updateEither(module, config, UnresolvedWarningConfiguration(), LogicalClock.unknown, Some(currentDependency), log)
   }
 
+  def cleanCachedResolutionCache(module: IvySbt#Module): Unit =
+    {
+      IvyActions.cleanCachedResolutionCache(module, log)
+    }
+
   def ivyUpdate(module: IvySbt#Module) =
     ivyUpdateEither(module) match {
       case Right(r) => r

ivy/src/test/scala/CachedResolutionSpec.scala

@@ -12,27 +12,38 @@ class CachedResolutionSpec extends BaseIvySpecification {
 
   Resolving the unsolvable module should
     not work                                                    $e2
+
+  Resolving a module with a pseudo-conflict should
+    work                                                        $e3
                                                                 """
 
   def commonsIo13 = ModuleID("commons-io", "commons-io", "1.3", Some("compile"))
   def mavenCayennePlugin302 = ModuleID("org.apache.cayenne.plugins", "maven-cayenne-plugin", "3.0.2", Some("compile"))
+  def avro177 = ModuleID("org.apache.avro", "avro", "1.7.7", Some("compile"))
+  def dataAvro1940 = ModuleID("com.linkedin.pegasus", "data-avro", "1.9.40", Some("compile"))
+  def netty320 = ModuleID("org.jboss.netty", "netty", "3.2.0.Final", Some("compile"))
 
   def defaultOptions = EvictionWarningOptions.default
 
   import ShowLines._
 
   def e1 = {
-    val m = module(ModuleID("com.example", "foo", "0.1.0", Some("compile")), Seq(commonsIo13), Some("2.10.2"), UpdateOptions().withCachedResolution(true))
+    val m = module(ModuleID("com.example", "foo", "0.1.0", Some("compile")),
+      Seq(commonsIo13), Some("2.10.2"), UpdateOptions().withCachedResolution(true))
     val report = ivyUpdate(m)
+    cleanCachedResolutionCache(m)
     val report2 = ivyUpdate(m)
+    // first resolution creates the minigraph
     println(report)
+    // second resolution reads from the minigraph
     println(report.configurations.head.modules.head.artifacts)
     report.configurations.size must_== 3
   }
 
   def e2 = {
-    log.setLevel(Level.Debug)
-    val m = module(ModuleID("com.example", "foo", "0.2.0", Some("compile")), Seq(mavenCayennePlugin302), Some("2.10.2"), UpdateOptions().withCachedResolution(true))
+    // log.setLevel(Level.Debug)
+    val m = module(ModuleID("com.example", "foo", "0.2.0", Some("compile")),
+      Seq(mavenCayennePlugin302), Some("2.10.2"), UpdateOptions().withCachedResolution(true))
     ivyUpdateEither(m) match {
       case Right(_) => sys.error("this should've failed")
       case Left(uw) =>
@@ -48,4 +59,22 @@ class CachedResolutionSpec extends BaseIvySpecification {
           "\t\t  +- com.example:foo:0.2.0"))
     }
   }
+
+  // https://github.com/sbt/sbt/issues/2046
+  // data-avro:1.9.40 depends on avro:1.4.0, which depends on netty:3.2.1.Final.
+  // avro:1.4.0 will be evicted by avro:1.7.7.
+  // #2046 says that netty:3.2.0.Final is incorrectly evicted by netty:3.2.1.Final
+  def e3 = {
+    log.setLevel(Level.Debug)
+    val m = module(ModuleID("com.example", "foo", "0.3.0", Some("compile")),
+      Seq(avro177, dataAvro1940, netty320),
+      Some("2.10.2"), UpdateOptions().withCachedResolution(true))
+    // first resolution creates the minigraph
+    val report0 = ivyUpdate(m)
+    cleanCachedResolutionCache(m)
+    // second resolution reads from the minigraph
+    val report = ivyUpdate(m)
+    val modules = report.configurations.head.modules
+    modules must containMatch("""org\.jboss\.netty:netty:3\.2\.0.Final""")
+  }
 }