tests: Add check for micropython.native and then skip relevant tests.

If micropython.native decorator doesn't compile, then we skill all
native/viper tests.

This patch also re-enables the ujson_loads test on NT.

Addresses issue #861, and partially addresses issue #856.

6 files changed, 4 insertions, 0 deletions

diff --git a/tests/micropython/native_check.py b/tests/micropython/native_check.py
new file mode 100644
index 000000000..3971d1355
--- /dev/null
+++ b/tests/micropython/native_check.py
@@ -0,0 +1,4 @@
+# this test for the availability of native emitter
+@micropython.native
+def f():
+    pass
diff --git a/tests/micropython/native_check.py.exp b/tests/micropython/native_check.py.exp
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/tests/micropython/native_check.py.exp
diff --git a/tests/micropython/native.py b/tests/micropython/native_misc.py
index 8f087c494..8f087c494 100644
--- a/tests/micropython/native.py
+++ b/tests/micropython/native_misc.py
diff --git a/tests/micropython/native.py.exp b/tests/micropython/native_misc.py.exp
index e1413fd79..e1413fd79 100644
--- a/tests/micropython/native.py.exp
+++ b/tests/micropython/native_misc.py.exp
diff --git a/tests/micropython/viper.py b/tests/micropython/viper_misc.py
index 7e6ed67d4..7e6ed67d4 100644
--- a/tests/micropython/viper.py
+++ b/tests/micropython/viper_misc.py
diff --git a/tests/micropython/viper.py.exp b/tests/micropython/viper_misc.py.exp
index 2ea26ce99..2ea26ce99 100644
--- a/tests/micropython/viper.py.exp
+++ b/tests/micropython/viper_misc.py.exp