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Reimplemented coverage.py, using only gcov and with line+branch coverage

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This also adds coverage support to the new test framework, which due to
reduction in scope, no longer needs aggregation and can be much
simpler. Really all we need to do is pass --coverage to GCC, which
builds its .gcda files during testing in a multi-process-safe manner.

The addition of branch coverage leverages information that was available
in both lcov and gcov.

This was made easier with the addition of the --json-format to gcov
in GCC 9.0, however the lax backwards compatibility for gcov's
intermediary options is a bit concerning. Hopefully --json-format
sticks around for a while.
This commit is contained in:
Christopher Haster
2022-05-15 23:03:58 -05:00
parent 2b11f2b426
commit 4a7e94fb15
4 changed files with 300 additions and 225 deletions
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Makefile
+15 -8
View File
@@ -31,6 +31,7 @@ OBJ := $(SRC:%.c=$(BUILDDIR)%.o)
DEP := $(SRC:%.c=$(BUILDDIR)%.d)
ASM := $(SRC:%.c=$(BUILDDIR)%.s)
CGI := $(SRC:%.c=$(BUILDDIR)%.ci)
TAGCDA := $(SRC:%.c=$(BUILDDIR)%.t.a.gcda)
TESTS ?= $(wildcard tests/*.toml)
TEST_SRC ?= $(SRC) \
@@ -40,6 +41,8 @@ TEST_TSRC := $(TESTS:%.toml=$(BUILDDIR)%.t.c) $(TEST_SRC:%.c=$(BUILDDIR)%.t.c)
TEST_TASRC := $(TEST_TSRC:%.t.c=%.t.a.c)
TEST_TAOBJ := $(TEST_TASRC:%.t.a.c=%.t.a.o)
TEST_TADEP := $(TEST_TASRC:%.t.a.c=%.t.a.d)
TEST_TAGCNO := $(TEST_TASRC:%.t.a.c=%.t.a.gcno)
TEST_TAGCDA := $(TEST_TASRC:%.t.a.c=%.t.a.gcda)
ifdef DEBUG
override CFLAGS += -O0
@@ -106,15 +109,17 @@ size: $(OBJ)
tags:
$(CTAGS) --totals --c-types=+p $(shell find -H -name '*.h') $(SRC)
.PHONY: test_runner
test_runner: $(BUILDDIR)runners/test_runner
.PHONY: test-runner
test-runner: override CFLAGS+=--coverage
test-runner: $(BUILDDIR)runners/test_runner
.PHONY: test
test: test_runner
test: test-runner
rm -f $(TEST_TAGCDA)
./scripts/test.py --runner=$(BUILDDIR)runners/test_runner $(TESTFLAGS)
.PHONY: test_list
test_list: test_runner
.PHONY: test-list
test-list: test-runner
./scripts/test.py --runner=$(BUILDDIR)runners/test_runner $(TESTFLAGS) -l
.PHONY: code
@@ -134,8 +139,8 @@ structs: $(OBJ)
./scripts/structs.py $^ -S $(STRUCTSFLAGS)
.PHONY: coverage
coverage:
./scripts/coverage.py $(BUILDDIR)tests/*.toml.info -s $(COVERAGEFLAGS)
coverage: $(TAGCDA)
./scripts/coverage.py $^ -s $(COVERAGEFLAGS)
.PHONY: summary
summary: $(BUILDDIR)lfs.csv
@@ -194,10 +199,12 @@ clean:
rm -f $(BUILDDIR)lfs.csv
rm -f $(BUILDDIR)runners/test_runner
rm -f $(OBJ)
rm -f $(CGI)
rm -f $(DEP)
rm -f $(ASM)
rm -f $(CGI)
rm -f $(TEST_TSRC)
rm -f $(TEST_TASRC)
rm -f $(TEST_TAOBJ)
rm -f $(TEST_TADEP)
rm -f $(TEST_TAGCNO)
rm -f $(TEST_TAGCDA)