From f9d47533eee849a4919fe753d28634686cd45a9e Mon Sep 17 00:00:00 2001
From: RunasSudo <runassudo@yingtongli.me>
Date: Mon, 14 Jun 2021 14:43:08 +1000
Subject: [PATCH] Use llvm-cov for coverage reporting

grcov reports incorrect coverage, e.g. showing blank lines as uncovered
---
 coverage.sh | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/coverage.sh b/coverage.sh
index bf11a9a..7f7f850 100755
--- a/coverage.sh
+++ b/coverage.sh
@@ -8,7 +8,10 @@ export LLVM_PROFILE_FILE="target/coverage/prof/opentally-%p-%m.profraw"
 export CARGO_TARGET_DIR=target/coverage
 cargo test
 
-grcov target/coverage/prof --binary-path target/coverage/debug -t html -o target/coverage/html \
-	--ignore src/numbers/rational_num.rs \
-	--ignore src/stv/wasm.rs \
-	--ignore 'tests/*'
+llvm-profdata merge -sparse target/coverage/prof/*.profraw -o target/coverage/opentally.profdata
+
+llvm-cov show target/coverage/debug/opentally -instr-profile=target/coverage/opentally.profdata -Xdemangler="$HOME/.cargo/bin/rustfilt" \
+	-ignore-filename-regex="$HOME/." \
+	-ignore-filename-regex=numbers/rational_num.rs \
+	-ignore-filename-regex=stv/wasm.rs \
+	-format=html --show-instantiations=false --output-dir=target/coverage/html