[subset] Unit test to check that post subsetting drops glyph names.

test/api/Makefile.am

diff --git a/test/api/Makefile.am b/test/api/Makefile.am
index 3c5a5cc..54e367f 100644
--- a/test/api/Makefile.am
+++ b/test/api/Makefile.am
@@ -36,6 +36,7 @@
 	test-subset-hdmx \
 	test-subset-hmtx \
 	test-subset-os2 \
+	test-subset-post \
 	test-subset-vmtx \
 	test-unicode \
 	test-version \
@@ -47,6 +48,7 @@
 test_subset_hdmx_LDADD = $(LDADD) $(top_builddir)/src/libharfbuzz-subset.la
 test_subset_hmtx_LDADD = $(LDADD) $(top_builddir)/src/libharfbuzz-subset.la
 test_subset_os2_LDADD = $(LDADD) $(top_builddir)/src/libharfbuzz-subset.la
+test_subset_post_LDADD = $(LDADD) $(top_builddir)/src/libharfbuzz-subset.la
 test_subset_vmtx_LDADD = $(LDADD) $(top_builddir)/src/libharfbuzz-subset.la
 
 test_unicode_CPPFLAGS = \