From d127dd5cab51a869d6f6bb6c2a0860c458d3fecd Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Mon, 21 Feb 2022 23:00:24 +0100
Subject: Add coverage test
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Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 Makefile               |  7 +++++++
 config-coverage-gcc.mk | 11 +++++++++++
 test.c                 |  8 +++++---
 3 files changed, 23 insertions(+), 3 deletions(-)
 create mode 100644 config-coverage-gcc.mk

diff --git a/Makefile b/Makefile
index be1a6ca..2660901 100644
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,7 @@
 CONFIGFILE = config.mk
 include $(CONFIGFILE)
 
+
 BIN =\
 	bsum\
 	b2sum
@@ -22,6 +23,11 @@ ALIASES =\
 	b384sum\
 	b512sum
 
+SRC =\
+	$(OBJ:.o=.c)\
+	$(HDR)\
+	test.c
+
 # Known answers tests 
 KAT_FILES =\
         kat/blake2b\
@@ -31,6 +37,7 @@ KAT_FILES =\
         kat/blake2xb\
         kat/blake2xs
 
+
 all: $(BIN) test
 $(OBJ): $(HDR)
 
diff --git a/config-coverage-gcc.mk b/config-coverage-gcc.mk
new file mode 100644
index 0000000..a505279
--- /dev/null
+++ b/config-coverage-gcc.mk
@@ -0,0 +1,11 @@
+CONFIGFILE_PROPER = config.mk
+include $(CONFIGFILE_PROPER)
+
+CC   = $(CC_PREFIX)gcc -std=c99
+GCOV = gcov
+
+CFLAGS  = -g -O0 -pedantic -fprofile-arcs -ftest-coverage
+LDFLAGS = -lblake -lgcov -fprofile-arcs
+
+coverage: check
+	$(GCOV) -pr $(SRC) 2>&1
diff --git a/test.c b/test.c
index 8f66b0e..3bd23ef 100644
--- a/test.c
+++ b/test.c
@@ -235,20 +235,22 @@ hashx(unsigned char **msg, size_t msglen, size_t *msgsize,
 		ERROR("Internal test error: %s\n", strerror(errno)); /* $covered$ */
 
 	if (!pid) {
+		/* $covered{$ */
 		close(input_pipe[1]);
 		close(output_pipe[0]);
 		if (input_pipe[0] != STDIN_FILENO) {
 			if (dup2(input_pipe[0], STDIN_FILENO) != STDIN_FILENO)
-				ERROR("Internal test error: %s\n", strerror(errno)); /* $covered$ */
+				ERROR("Internal test error: %s\n", strerror(errno));
 			close(input_pipe[0]);
 		}
 		if (output_pipe[1] != STDOUT_FILENO) {
 			if (dup2(output_pipe[1], STDOUT_FILENO) != STDOUT_FILENO)
-				ERROR("Internal test error: %s\n", strerror(errno)); /* $covered$ */
+				ERROR("Internal test error: %s\n", strerror(errno));
 			close(output_pipe[1]);
 		}
 		execv(argv[0], (void *const)argv);
-		ERROR("Internal test error: %s\n", strerror(errno)); /* $covered$ */
+		ERROR("Internal test error: %s\n", strerror(errno));
+		/* $covered}$ */
 
 	} else {
 		close(input_pipe[0]);
-- 
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