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atf_test_case makeconf__ok
proc makeconf__ok_body {
	cat >Makefile <<< """
A_TEST_CONFIG_VARIABLE = not overriden

.PHONY: show-config-var
show-config-var:
	@echo '$'{A_TEST_CONFIG_VARIABLE}

.include <bsd.own.mk>
"""

	echo >empty.conf
	cat >custom.conf <<< """
A_TEST_CONFIG_VARIABLE = 'a value'
"""
	atf_check -o inline:'not overriden\n' \
	    make MAKECONF="$(pwd)/empty.conf" show-config-var
	atf_check -o inline:'a value\n' \
	    make MAKECONF="$(pwd)/custom.conf" show-config-var
}

atf_test_case makeconf__missing
proc makeconf__missing_body {
	cat >Makefile <<< """
.PHONY: hello
hello:
	@echo 'Did not error out on a missing file!'

.include <bsd.own.mk>
"""

	echo >empty.conf
	cat >custom.conf <<< """
A_TEST_CONFIG_VARIABLE = 'a value'
"""
	atf_check -o inline:'Did not error out on a missing file!\n' \
	    make MAKECONF="$(pwd)/non-existent.conf" hello
}

proc atf_init_test_cases {
	atf_add_test_case makeconf__ok
	atf_add_test_case makeconf__missing
}