Make cleaning optional if not building TestApps for UI test launch

scripts/run-ui-tests.sh

@@ -4,7 +4,7 @@
 SCRIPT_DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 UITEST_BUILD_DIR="$SCRIPT_DIR/../Tests/UITests/bin/Release"
 BUILD_SCRIPT="build.sh"
-BUILD_TARGET="TestApps"
+BUILD_TARGET="UITest"
 CLEAN_TARGET="clean"
 
 # Built application files
@@ -79,12 +79,14 @@ fi
 
 # Build tests
 pushd ..
-echo "Cleaning..."
-sh $BUILD_SCRIPT -t=$CLEAN_TARGET # clean so that we don't accidentally update to snapshot
-if [ $? -ne 0 ]; then
-    echo "An error occured while cleaning."
-    popd
-    exit 1
+if [ "${BUILD_TARGET}" == "TestApps" ]; then
+    echo "Cleaning..."
+    sh $BUILD_SCRIPT -t=$CLEAN_TARGET # clean so that we don't accidentally update to snapshot
+    if [ $? -ne 0 ]; then
+        echo "An error occured while cleaning."
+        popd
+        exit 1
+    fi
 fi
 echo "Building target \"$BUILD_TARGET\"..."
 sh $BUILD_SCRIPT -s "scripts/uitest.cake" -t=$BUILD_TARGET

scripts/uitest.cake

@@ -6,12 +6,12 @@
 // Task Target for build
 var Target = Argument("Target", Argument("t", "TestApps"));
 
-Task("UITest").IsDependentOn("RestoreTestPackages").Does(() =>
+Task("UITest").Does(() =>
 {
     MSBuild("../Tests/UITests/Contoso.Forms.Test.UITests.csproj", c => c.Configuration = "Release");
 });
 
-Task("TestApps").IsDependentOn("UITest").Does(() =>
+Task("TestApps").IsDependentOn("RestoreTestPackages").IsDependentOn("UITest").Does(() =>
 {
     // Build and package the test applications
     MSBuild("../Tests/iOS/Contoso.Forms.Test.iOS.csproj", settings => settings.SetConfiguration("Release")