lib: vendor tinytest

Upstream MicroPython is removing tinytest from it's source tree, so
we need to make a copy of it so things don't break in future updates.

.vscode/c_cpp_properties.json

@@ -429,7 +429,6 @@
         {
             "name": "pbio/test",
             "includePath": [
-                "${workspaceFolder}/micropython/lib/tinytest",
                 "${workspaceFolder}/lib/btstack/chipset/cc256x",
                 "${workspaceFolder}/lib/btstack/platform/posix",
                 "${workspaceFolder}/lib/btstack/src",
@@ -440,7 +439,8 @@
                 "${workspaceFolder}/lib/pbio/include",
                 "${workspaceFolder}/lib/pbio/platform/test",
                 "${workspaceFolder}/lib/pbio/test",
-                "${workspaceFolder}/lib/pbio/test/build"
+                "${workspaceFolder}/lib/pbio/test/build",
+                "${workspaceFolder}/lib/tinytest"
             ],
             "defines": [
                 "UNIX"

lib/pbio/test/Makefile

@@ -34,8 +34,8 @@ endif
 
 all: $(PROG)
 
-# using tinytest from upstream MicroPython
-TINY_TEST_DIR = ../../../micropython/lib/tinytest
+# tinytest dependency
+TINY_TEST_DIR = ../../tinytest
 TINY_TEST_INC = -I$(TINY_TEST_DIR)
 TINY_TEST_SRC = $(TINY_TEST_DIR)/tinytest.c
 

lib/tinytest/README

@@ -0,0 +1,18 @@
+Tinytest is a tiny little test framework written in C by Nick Mathewson.
+
+It is distributed under the 3-clause BSD license.  You can use it in
+your own programs so long as you follow the license's conditions.
+
+It's been tested on Windows, Mac, and many of the free Unixes.
+
+It knows how to fork before running certain tests, and it makes
+text-mode output in a format I like.
+
+For info on how to use it, check out tinytest_demo.c.
+
+You can get the latest version using Git, by pulling from
+   git://github.com/nmathewson/tinytest.git
+
+Patches are welcome. Patches that turn this from tinytest to hugetest
+will not be applied.  If you want a huge test framework, use CUnit.
+