[libdmapsharing] Wire coverage testing into make check

[W. Michael Petullo <wmpetullo src gnome org>]

commit 38fc523265ff68f519ce6d8d49316d2a23b438eb
Author: W. Michael Petullo <mike flyn org>
Date:   Sat Jul 21 12:59:55 2018 -0400

    Wire coverage testing into make check
    
    Signed-off-by: W. Michael Petullo <mike flyn org>

 configure.ac               |  4 ++--
 libdmapsharing/Makefile.am |  5 +++++
 tests/summarize-coverage   | 47 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 54 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 0b35343..27365d9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,9 +34,9 @@ AC_SUBST(ACLOCAL_AMFLAGS, "-I m4")
 AC_ARG_ENABLE(debug, [AC_HELP_STRING([--enable-debug],[enable debugging build])])
 AC_ARG_ENABLE(coverage, [AC_HELP_STRING([--enable-coverage],[enable code-coverage build])])
 if test "x$enable_debug" = "xyes"; then
-       CFLAGS="$CFLAGS -g"
+       CFLAGS="$CFLAGS -O0 -g"
 elif test "x$enable_coverage" = "xyes"; then
-       CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
+       CFLAGS="$CFLAGS -O0 -g -fprofile-arcs -ftest-coverage"
 else
        CFLAGS="$CFLAGS -O2"
 fi
diff --git a/libdmapsharing/Makefile.am b/libdmapsharing/Makefile.am
index 28db6f7..e5995f6 100644
--- a/libdmapsharing/Makefile.am
+++ b/libdmapsharing/Makefile.am
@@ -202,6 +202,11 @@ CLEANFILES += $(gir_DATA) $(typelib_DATA)
 endif
 
 check:
+       ../tests/unit-test
+       set -e; for i in $(libdmapsharing_4_0_la_SOURCES); do \
+               gcov -r -o $(patsubst %.c,%.o,.libs/libdmapsharing_4_0_la-$$i) $$i > /dev/null; \
+       done
+       ../tests/summarize-coverage $(patsubst %,%.gcov,$(libdmapsharing_4_0_la_SOURCES))
 if HAVE_PEDANSEE
        echo    "[flags]" > pedansee.conf
        echo    "       skip-unit-test-present = true" >> pedansee.conf
diff --git a/tests/summarize-coverage b/tests/summarize-coverage
new file mode 100755
index 0000000..e6a12bd
--- /dev/null
+++ b/tests/summarize-coverage
@@ -0,0 +1,47 @@
+#!/usr/bin/awk -f
+
+BEGIN {
+       checked         = 0
+       totalchecked    = 0
+       unchecked       = 0
+       totalunchecked  = 0
+       irrelevant      = 0
+       totalirrelevant = 0
+       argprev         = 0
+       filenameprev    = FILENAME
+}
+
+function printstats(name, checked, unchecked, irrelevant) {
+       total = checked + unchecked
+       if (total == 0) {
+               return
+       }
+       printf "%s: %d checked (%.2f%) %d unchecked (%.2f%) %d irrelevant\n",
+                name,
+                checked,
+                checked / total * 100,
+                unchecked,
+                unchecked / total * 100,
+                irrelevant
+}
+
+# Print and reset when file changes.
+# (Note that FILENAME already changed; hence filenameprev).
+{
+       if (ARGIND != argprev) {
+               printstats(filenameprev, checked, unchecked, irrelevant)
+               checked = unchecked = irrelevant = 0
+               argprev      = ARGIND
+               filenameprev = FILENAME
+       }
+}
+
+/^ *[0-9]*:/ { checked++;    totalchecked++ }
+/^ *#####:/  { unchecked++;  totalunchecked++ }
+/^ *-:/      { irrelevant++; totalirrelevant++ }
+
+# Print statistics for last file and totals.
+END {
+       printstats(FILENAME, checked, unchecked, irrelevant)
+       printstats("total", totalchecked, totalunchecked, totalirrelevant)
+}