From d67b821130d1b73765ffcd60952a35141a4b8d3d Mon Sep 17 00:00:00 2001
From: Paul Campbell <pcampbell@kemitix.net>
Date: Tue, 4 Jun 2024 07:16:23 +0100
Subject: [PATCH] chore: add grcov-coverage as an alternate report generation
 recipe

---
 justfile | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/justfile b/justfile
index 44414667..661f7039 100644
--- a/justfile
+++ b/justfile
@@ -21,3 +21,17 @@ start-ngrok:
 coverage-update:
   cargo tarpaulin --lib --out html
   echo "Now:\n\topen tarpaulin-report.html"
+
+grcov-coverage:
+  #!/usr/bin/env bash
+  set -e
+  # an alternate coverage report
+  rustup component add llvm-tools-preview
+  export RUSTFLAGS="-Cinstrument-coverage"
+  cargo build
+  export LLVM_PROFILE_FILE="git-next-%p-%m.profraw"
+  cargo test
+  echo "Building report..."
+  grcov . -s . --binary-path ./target/debug/ -t html --branch --ignore-not-existing -o ./target/debug/coverage/
+  find . -name '*.profraw' -exec rm "{}" \;
+  echo "Now:\n\topen target/debug/coverage/index.html"