[PATCH v3 6/7] t/Makefile: run unit tests alongside shell tests

[Josh Steadmon <steadmon@google.com>]

From: Jeff King <peff@peff.net>

Add a wrapper script to allow `prove` to run both shell tests and unit
tests from a single invocation. This avoids issues around running prove
twice in CI, as discussed in [1].

Additionally, this moves the unit tests into the main dev workflow, so
that errors can be spotted more quickly. Accordingly, we remove the
separate unit tests step for Linux CI. (We leave the Windows CI
unit-test step as-is, because the sharding scheme there involves
selecting specific test files rather than running `make test`.)

[1] https://lore.kernel.org/git/pull.1613.git.1699894837844.gitgitgadget@gmail.com/

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Josh Steadmon <steadmon@google.com>
---
 ci/run-build-and-tests.sh |  2 --
 t/Makefile                |  2 +-
 t/run-test.sh             | 13 +++++++++++++
 3 files changed, 14 insertions(+), 3 deletions(-)
 create mode 100755 t/run-test.sh

diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
index 7a1466b868..2528f25e31 100755
--- a/ci/run-build-and-tests.sh
+++ b/ci/run-build-and-tests.sh
@@ -50,8 +50,6 @@ if test -n "$run_tests"
 then
 	group "Run tests" make test ||
 	handle_failed_tests
-	group "Run unit tests" \
-		make DEFAULT_UNIT_TEST_TARGET=unit-tests-prove unit-tests
 fi
 check_unignored_build_artifacts
 
diff --git a/t/Makefile b/t/Makefile
index 0ae04f1e42..0c739754d8 100644
--- a/t/Makefile
+++ b/t/Makefile
@@ -68,7 +68,7 @@ failed:
 	test -z "$$failed" || $(MAKE) $$failed
 
 prove: pre-clean check-chainlint $(TEST_LINT)
-	@echo "*** prove ***"; $(CHAINLINTSUPPRESS) $(PROVE) --exec '$(TEST_SHELL_PATH_SQ)' $(GIT_PROVE_OPTS) $(T) :: $(GIT_TEST_OPTS)
+	@echo "*** prove (shell & unit tests) ***"; $(CHAINLINTSUPPRESS) $(PROVE) --exec ./run-test.sh $(GIT_PROVE_OPTS) $(T) $(UNIT_TESTS) :: $(GIT_TEST_OPTS)
 	$(MAKE) clean-except-prove-cache
 
 $(T):
diff --git a/t/run-test.sh b/t/run-test.sh
new file mode 100755
index 0000000000..c29fef48dc
--- /dev/null
+++ b/t/run-test.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# A simple wrapper to run shell tests via TEST_SHELL_PATH,
+# or exec unit tests directly.
+
+case "$1" in
+*.sh)
+	exec ${TEST_SHELL_PATH:-/bin/sh} "$@"
+	;;
+*)
+	exec "$@"
+	;;
+esac
-- 
2.44.0.rc0.258.g7320e95886-goog