Only set buildtesting when flag is set to true

cget/prefix.py

@@ -338,7 +338,7 @@ def build(self, pb, test=False, target=None, generator=None):
             # Install any dependencies first
             self.install_deps(pb, src_dir, generator=generator, test=test)
             # Configure and build
-            if not builder.exists: builder.configure(src_dir, defines=pb.define, generator=generator, variant=pb.variant)
+            if not builder.exists: builder.configure(src_dir, defines=pb.define, generator=generator, test=test, variant=pb.variant)
             builder.build(variant=pb.variant, target=target)
             # Run tests if enabled
             if test: builder.test(variant=pb.variant)

test/buildtesting/CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 2.8)
+project(buildtesting)
+
+if(BUILD_TESTING)
+    message(FATAL_ERROR "BUILD_TESTING is set. Aborting.")
+endif()
+
+add_custom_target(check)
+
+install(CODE "")

test/test_cget.py

@@ -435,6 +435,19 @@ def test_unlink_update(d):
 def test_build_dir(d):
     d.cmds(build_cmds(get_exists_path('libsimple')))
 
+@appveyor_skip
+def test_build_dir_notest(d):
+    d.cmds([
+        cget_cmd('build', '--verbose', get_exists_path('buildtesting')),
+    ])
+
+@appveyor_skip
+@pytest.mark.xfail(strict=True)
+def test_build_dir_with_test(d):
+    d.cmds([
+        cget_cmd('build', '--verbose --test', get_exists_path('buildtesting')),
+    ])
+
 @appveyor_skip
 def test_build_dir_dev(d):
     d.cmds(build_cmds(get_exists_path('basicapp-dev'), size=1))