Expaned the update tests to make sure a) Only requested updates execute and b) Installed repos with no actions get pruned from the jobqueue

tests/Composer/Test/DependencyResolver/SolverTest.php

@@ -158,6 +158,22 @@ class SolverTest extends TestCase
         $this->checkSolverResult(array());
     }
 
+    public function testSolverUpdateOnlyUpdatesSelectedPackage()
+    {
+        $this->repoInstalled->addPackage($packageA = $this->getPackage('A', '1.0'));
+        $this->repoInstalled->addPackage($packageB = $this->getPackage('B', '1.0'));
+        $this->repo->addPackage($packageAnewer = $this->getPackage('A', '1.1'));
+        $this->repo->addPackage($packageBnewer = $this->getPackage('B', '1.1'));
+
+        $this->reposComplete();
+
+        $this->request->update('A');
+
+        $this->checkSolverResult(array(
+            array('job' => 'update', 'from' => $packageA, 'to' => $packageAnewer),
+        ));
+    }
+
     public function testSolverUpdateConstrained()
     {
         $this->repoInstalled->addPackage($packageA = $this->getPackage('A', '1.0'));
@@ -192,6 +208,24 @@ class SolverTest extends TestCase
         )));
     }
 
+    public function testSolverUpdateFullyConstrainedPrunesInstalledPackages()
+    {
+        $this->repoInstalled->addPackage($packageA = $this->getPackage('A', '1.0'));
+        $this->repoInstalled->addPackage($this->getPackage('B', '1.0'));
+        $this->repo->addPackage($newPackageA = $this->getPackage('A', '1.2'));
+        $this->repo->addPackage($this->getPackage('A', '2.0'));
+        $this->reposComplete();
+
+        $this->request->install('A', new VersionConstraint('<', '2.0.0.0'));
+        $this->request->update('A', new VersionConstraint('=', '1.0.0.0'));
+
+        $this->checkSolverResult(array(array(
+            'job' => 'update',
+            'from' => $packageA,
+            'to' => $newPackageA,
+        )));
+    }
+
     public function testSolverAllJobs()
     {
         $this->repoInstalled->addPackage($packageD = $this->getPackage('D', '1.0'));