Add VT100/color attributes tests.

src/tests/Makefile.am

@@ -1,7 +1,8 @@
 EXTRA_DIST = \
 	hold-stdin print-exitstatus \
 	e2e-test e2e-test-server \
-	$(displaytests)
+	$(displaytests) \
+	emulation-attributes.test
 
 AM_CXXFLAGS = $(WARNING_CXXFLAGS) $(PICKY_CXXFLAGS) $(HARDEN_CFLAGS) $(MISC_CXXFLAGS)
 AM_LDFLAGS  = $(HARDEN_LDFLAGS)
@@ -10,6 +11,10 @@ displaytests = \
 	e2e-success.test \
 	e2e-failure.test \
 	emulation-80th-column.test \
+	emulation-attributes-vt100.test \
+	emulation-attributes-16color.test \
+	emulation-attributes-256color8.test \
+	emulation-attributes-256color248.test \
 	emulation-back-tab.test \
 	emulation-cursor-motion.test \
 	emulation-multiline-scroll.test \
@@ -23,6 +28,7 @@ check_PROGRAMS = ocb-aes encrypt-decrypt base64
 TESTS = ocb-aes encrypt-decrypt base64 $(displaytests)
 XFAIL_TESTS = \
 	e2e-failure.test \
+	emulation-attributes-256color8.test \
 	emulation-back-tab.test
 
 base64_vector.cc: $(srcdir)/genbase64.pl