Added more poolbuilder test

src/Composer/DependencyResolver/PoolBuilder.php

@@ -272,7 +272,8 @@ class PoolBuilder
 
         // Make sure we empty the packagesToLoad here as it would result
         // in an endless loop with non-existent packages for example
-        $this->packagesToLoad = array();
+        // TODO: fixme, this should only happen if it's not a new package
+        // $this->packagesToLoad = array();
     }
 
     private function loadPackage(Request $request, PackageInterface $package, $propagateUpdate = true)

tests/Composer/Test/DependencyResolver/Fixtures/poolbuilder/package-versions-are-not-loaded-if-not-required-recursive.test

@@ -0,0 +1,29 @@
+--TEST--
+Test irrelevant package versions are not loaded
+
+--REQUEST--
+{
+    "require": {
+        "root/req": "*"
+    }
+}
+
+--FIXED--
+[
+]
+
+--PACKAGES--
+[
+    {"name": "root/req", "version": "1.0.0", "require": {"dep/dep": "2.*"}},
+    {"name": "dep/dep", "version": "2.3.4", "require": {"dep/dep2": "2.*"}},
+    {"name": "dep/dep", "version": "3.0.1"},
+    {"name": "dep/dep2", "version": "2.3.4"},
+    {"name": "dep/dep2", "version": "3.0.1"}
+]
+
+--EXPECT--
+[
+    "root/req-1.0.0.0",
+    "dep/dep-2.3.4.0",
+    "dep/dep2-2.3.4.0"
+]

tests/Composer/Test/DependencyResolver/Fixtures/poolbuilder/package-versions-are-not-loaded-if-not-required-simple.test

@@ -0,0 +1,26 @@
+--TEST--
+Test irrelevant package versions are not loaded
+
+--REQUEST--
+{
+    "require": {
+        "root/req": "*"
+    }
+}
+
+--FIXED--
+[
+]
+
+--PACKAGES--
+[
+    {"name": "root/req", "version": "1.0.0", "require": {"dep/dep": "2.*"}},
+    {"name": "dep/dep", "version": "2.3.4"},
+    {"name": "dep/dep", "version": "3.0.1"}
+]
+
+--EXPECT--
+[
+    "root/req-1.0.0.0",
+    "dep/dep-2.3.4.0"
+]