From cc5e463ee3cf6b0983093df565d1b6c0d93c0e27 Mon Sep 17 00:00:00 2001
From: Songqian Li <sionli@tencent.com>
Date: Wed, 23 Oct 2024 16:40:17 +0800
Subject: [PATCH] docs: improve code coverage document

Fixes: #6507

This patch improves the code coverage use case for integration
tests and unit tests.

Signed-off-by: Songqian Li <sionli@tencent.com>
---
 docs/coverage.md | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/docs/coverage.md b/docs/coverage.md
index 38fce82d9..96a5a54da 100644
--- a/docs/coverage.md
+++ b/docs/coverage.md
@@ -65,17 +65,17 @@ the data processing from within the container if you don't want to fight the
 tool chain.
 
 ```shell
-# Get a shell
-./scripts/dev_cli.sh shell
+# Set env to enable code coverage
+export RUSTFLAGS="-Cinstrument-coverage"
+export LLVM_PROFILE_FILE="ch-%p-%m.profraw"
 
-# Install llvm-tools-preview for llvm-profdata
-rustup component add llvm-tools-preview
-# Merge data files by using the following command
-find . -name '*.profraw' -exec `rustc --print sysroot`/lib/rustlib/x86_64-unknown-linux-gnu/bin/llvm-profdata merge -sparse {} -o coverage.profdata \;
+# Run unit tests
+scripts/dev_cli.sh tests --unit --libc gnu
 
-# As of writing, the container has Rust 1.67.1. It is too old for grcov.
-rustup install stable
-cargo +stable install grcov
-# Run grcov as usual
-grcov . --binary-path ./target/x86_64-unknown-linux-gnu/release -s . -t html --branch --ignore-not-existing -o coverage-html-output/
+# Run integration tests
+scripts/dev_cli.sh tests --integration --libc gnu
+scripts/dev_cli.sh tests --integration-live-migration --libc gnu
+
+# Export code coverage report
+scripts/dev_cli.sh tests --coverage -- -- html
 ```