[RFC PATCH 2/2] unit test: add basic example

From: Calvin Wan <calvinwan@google.com>
Date: Apr 27, 2023, 17:50 UTC
Message-ID: <20230427175007.902278-3-calvinwan@google.com>
In-Reply-To: <20230427175007.902278-1-calvinwan@google.com>

Although this commit doesn't showcase unit tests running against anything in Git, locally, I have a smaller set of Git files compiling into a library with unit tests running against it using this C TAP harness.

However, you can run `make ctap` to get an idea of how the output looks and use it as a baseline to play around with the other features of the library.

Signed-off-by: Calvin Wan <calvinwan@google.com>
---
 Makefile      | 11 +++++++++++
 t/TESTS       |  1 +
 t/unit-test.c | 14 ++++++++++++++
 3 files changed, 26 insertions(+)
 create mode 100644 t/unit-test.c

diff --git a/Makefile b/Makefile
index 60ab1a8b4f..b67b81e312 100644
--- a/Makefile
+++ b/Makefile
@@ -3831,3 +3831,14 @@ $(FUZZ_PROGRAMS): all
 		$(XDIFF_OBJS) $(EXTLIBS) git.o $@.o $(LIB_FUZZING_ENGINE) -o $@
 
 fuzz-all: $(FUZZ_PROGRAMS)
+
+LIB_CTAP_SOURCES = t/tap/basic.c t/tap/basic.h t/tap/macros.h
+
+PHONY: ctap
+ctap:
+	cc -It -c $(LIB_CTAP_SOURCES)
+	ar -rc libtap.a basic.o
+	mkdir -p t/unit-test
+	cc -It -o t/unit-test/unit-test-t t/unit-test.c -L. -l:libtap.a
+	cc -o t/runtests t/runtests.c
+	cd t && ./runtests -l TESTS
diff --git a/t/TESTS b/t/TESTS
index e69de29bb2..4b1899a115 100644
--- a/t/TESTS
+++ b/t/TESTS
@@ -0,0 +1 @@
+unit-test/unit-test-t
diff --git a/t/unit-test.c b/t/unit-test.c
new file mode 100644
index 0000000000..6eceb50ee6
--- /dev/null
+++ b/t/unit-test.c
@@ -0,0 +1,14 @@
+#include <tap/basic.h>
+
+int unit_test() {
+	if (1 != 1)
+		return 0;
+	return 1;
+}
+
+int main(void)
+{
+	plan(1);
+	ok(unit_test(), "unit test runs successfully");
+	return 0;
+}

-- 
2.40.1.495.gc816e09b53d-goog