tests: Rename "tests/frozen" into "tests/assets".

This commit renames the "tests/frozen" directory into "tests/assets" to
make it more explicit that it does contain files that are needed for
other tests to function.

Right now there's only a single pre-compiled module being used for
miscellaneous tests, but it will soon hold ROMFS test data as well.

Signed-off-by: Alessandro Gatti <a.gatti@frob.it>

ports/minimal/Makefile

@@ -74,7 +74,7 @@ else
 all: $(BUILD)/firmware.elf
 endif
 
-$(BUILD)/_frozen_mpy.c: $(TOP)/tests/frozen/frozentest.mpy $(BUILD)/genhdr/qstrdefs.generated.h
+$(BUILD)/_frozen_mpy.c: $(TOP)/tests/assets/frozentest.mpy $(BUILD)/genhdr/qstrdefs.generated.h
 	$(ECHO) "MISC freezing bytecode"
 	$(Q)$(TOP)/tools/mpy-tool.py -f -q $(BUILD)/genhdr/qstrdefs.preprocessed.h -mlongint-impl=none $< > $@
 

ports/powerpc/Makefile

@@ -50,7 +50,7 @@ OBJ += $(BUILD)/head.o
 
 all: $(BUILD)/firmware.elf $(BUILD)/firmware.map $(BUILD)/firmware.bin
 
-$(BUILD)/_frozen_mpy.c: $(TOP)/tests/frozen/frozentest.mpy $(BUILD)/genhdr/qstrdefs.generated.h
+$(BUILD)/_frozen_mpy.c: $(TOP)/tests/assets/frozentest.mpy $(BUILD)/genhdr/qstrdefs.generated.h
 	$(ECHO) "MISC freezing bytecode"
 	$(Q)$(MPY_TOOL) -f -q $(BUILD)/genhdr/qstrdefs.preprocessed.h -mlongint-impl=mpz $< > $@
 

ports/unix/variants/coverage/manifest.py

@@ -1,5 +1,5 @@
 add_library("unix-ffi", "$(MPY_LIB_DIR)/unix-ffi")
 freeze_as_str("frzstr")
 freeze_as_mpy("frzmpy")
-freeze_mpy("$(MPY_DIR)/tests/frozen")
+freeze_mpy("$(MPY_DIR)/tests/assets")
 require("ssl")

tools/ci.sh

@@ -158,7 +158,7 @@ function ci_mpy_format_setup {
 
 function ci_mpy_format_test {
     # Test mpy-tool.py dump feature on bytecode
-    python3 ./tools/mpy-tool.py -xd tests/frozen/frozentest.mpy
+    python3 ./tools/mpy-tool.py -xd tests/assets/frozentest.mpy
 
     # Build MicroPython
     ci_unix_standard_build
@@ -167,7 +167,7 @@ function ci_mpy_format_test {
     export MICROPYPATH=.
 
     # Test mpy-tool.py running under MicroPython
-    $micropython ./tools/mpy-tool.py -x -d tests/frozen/frozentest.mpy
+    $micropython ./tools/mpy-tool.py -x -d tests/assets/frozentest.mpy
 
     # Test mpy-tool.py dump feature on native code
     make -C examples/natmod/features1