Toughen the path resolution of Coverage.profdata and the desired product.

Before this change we assumed that Coverage.profdata and the desired product would live in specific directories.

After this change we'll search for both files each time the build initiaties. This resolves a bug affecting Xcode 7.3 and later due to changes in build paths from Xcode 7.2 to 7.3.

Closes #2.

Author: Jeff Verkoeyen

engine/XcodeUnitTestEngine.php

@@ -148,15 +148,18 @@ public function run() {
       if (!preg_match('/OBJROOT = (.+)/', $settings_stdout, $matches)) {
         throw new Exception('Unable to find OBJROOT configuration.');
       }
-
       $objroot = $matches[1];
-      $covroot = $objroot."/CodeCoverage/".$this->xcodebuild['scheme'];
-      $profdata = $covroot."/Coverage.profdata";
-      // TODO(featherless): Find a better way to identify which Product was built.
-      $product = $covroot."/Products/Debug-iphonesimulator/".$this->coverage['product'];
+
+      $future = new ExecFuture("find %C -name Coverage.profdata", $objroot);
+      list(, $coverage_stdout, ) = $future->resolve();
+      $profdata_path = explode("\n", $coverage_stdout)[0];
+
+      $future = new ExecFuture("find %C | grep %C", $objroot, $this->coverage['product']);
+      list(, $product_stdout, ) = $future->resolve();
+      $product_path = explode("\n", $product_stdout)[0];
 
       $future = new ExecFuture('%C show -use-color=false -instr-profile "%C" "%C"',
-        $this->covBinary, $profdata, $product);
+        $this->covBinary, $profdata_path, $product_path);
       $future->setCWD(Filesystem::resolvePath($this->getWorkingCopy()->getProjectRoot()));
 
       try {