[subset] Add a test runner for hb-subset-fuzzer and cmake build config.

test/fuzzing/CMakeLists.txt

diff --git a/test/fuzzing/CMakeLists.txt b/test/fuzzing/CMakeLists.txt
index fe4cf79..cb41dc1 100644
--- a/test/fuzzing/CMakeLists.txt
+++ b/test/fuzzing/CMakeLists.txt
@@ -1,6 +1,7 @@
 if (HB_CHECK)
   file (READ "${CMAKE_CURRENT_SOURCE_DIR}/Makefile.am" MAKEFILEAM)
   extract_make_variable (hb_fuzzer_SOURCES ${MAKEFILEAM})
+  extract_make_variable (hb_subset_fuzzer_SOURCES ${MAKEFILEAM})
 
   # TODO: enable these two
   #extract_make_variable (FUZZING_CPPFLAGS ${MAKEFILEAM}) # extracting regex fail
@@ -11,8 +12,16 @@
   add_executable (hb-fuzzer ${hb_fuzzer_SOURCES})
   target_link_libraries (hb-fuzzer harfbuzz)
 
+  add_executable (hb-subset-fuzzer ${hb_subset_fuzzer_SOURCES})
+  target_link_libraries (hb-subset-fuzzer harfbuzz-subset)
+
   target_compile_definitions(hb-fuzzer PUBLIC ${FUZZING_CPPFLAGS})
+  target_compile_definitions(hb-subset-fuzzer PUBLIC ${FUZZING_CPPFLAGS})
+
   add_test (NAME hb-fuzzer
     COMMAND "${PYTHON_EXECUTABLE}" run-fuzzer-tests.py $<TARGET_FILE:hb-fuzzer>
     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+  add_test (NAME hb-subset-fuzzer
+    COMMAND "${PYTHON_EXECUTABLE}" run-subset-fuzzer-tests.py $<TARGET_FILE:hb-subset-fuzzer>
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
 endif ()

test/fuzzing/Makefile.am

diff --git a/test/fuzzing/Makefile.am b/test/fuzzing/Makefile.am
index 27f59d9..d1f49e5 100644
--- a/test/fuzzing/Makefile.am
+++ b/test/fuzzing/Makefile.am
@@ -48,7 +48,7 @@
 	$(NULL)
 
 hb_subset_fuzzer_SOURCES = \
-	hb-subset.hh \
+	hb-fuzzer.hh \
 	hb-subset-fuzzer.cc \
 	main.cc \
 	$(NULL)
@@ -64,5 +64,6 @@
 
 check:
 	EXEEXT="$(EXEEXT)" srcdir="$(srcdir)" builddir="$(builddir)" $(srcdir)/run-fuzzer-tests.py
+	EXEEXT="$(EXEEXT)" srcdir="$(srcdir)" builddir="$(builddir)" $(srcdir)/run-subset-fuzzer-tests.py
 
 -include $(top_srcdir)/git.mk

test/fuzzing/run-subset-fuzzer-tests.py

diff --git a/test/fuzzing/run-subset-fuzzer-tests.py b/test/fuzzing/run-subset-fuzzer-tests.py
new file mode 100755
index 0000000..9450cb4
--- /dev/null
+++ b/test/fuzzing/run-subset-fuzzer-tests.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+
+from __future__ import print_function
+import sys, os, subprocess
+
+srcdir = os.environ.get ("srcdir", ".")
+EXEEXT = os.environ.get ("EXEEXT", "")
+top_builddir = os.environ.get ("top_builddir", ".")
+hb_subset_fuzzer = os.path.join (top_builddir, "hb-subset-fuzzer" + EXEEXT)
+
+if not os.path.exists (hb_subset_fuzzer):
+        if len (sys.argv) == 1 or not os.path.exists (sys.argv[1]):
+                print ("""Failed to find hb-subset-fuzzer binary automatically,
+please provide it as the first argument to the tool""")
+                sys.exit (1)
+
+        hb_subset_fuzzer = sys.argv[1]
+
+print ('hb_subset_fuzzer:', hb_subset_fuzzer)
+fails = 0
+
+parent_path = os.path.join (srcdir, "..", "subset", "data", "fonts")
+for file in os.listdir (parent_path):
+        p = subprocess.Popen ([hb_subset_fuzzer, os.path.join(parent_path, file)])
+
+        if p.wait () != 0:
+                fails = fails + 1
+
+if fails:
+        print ("%i fuzzer related tests failed." % fails)
+        sys.exit (1)