From 845089ea062f3351163272027a394997de8e852e Mon Sep 17 00:00:00 2001
From: Vasily Tsybenko <vasayxtx@gmail.com>
Date: Tue, 8 Oct 2024 21:29:01 +0300
Subject: [PATCH] Validate code coverage in CI

---
 .github/workflows/test.yml | 27 +++++++++++++++++----------
 min-coverage.txt           |  2 +-
 2 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7d7f09c..aeaca86 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -35,13 +35,20 @@ jobs:
         run: go mod download
 
       - name: Run tests with coverage
-        run: go test -race -cover -coverprofile="coverage.out" -covermode=atomic -v ./...
-
-      - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
-        with:
-          files: ./coverage.out
-
-      - name: Calculate coverage
-        run: go tool cover -func=coverage.out | grep total | awk '{print substr($3, 1, length($3)-1)}'
-        id: coverage
+        run: go test -race -cover -coverprofile="coverage.out" -covermode=atomic -v --coverpkg=./... ./...
+
+      - name: Exclude generated code and examples from coverage
+        if: matrix.os == 'ubuntu-latest'
+        run: grep -Ev '/pb/|/examples/' ./coverage.out > ./coverage_filtered.out && mv -f ./coverage_filtered.out ./coverage.out
+
+      - name: Check coverage
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          real_coverage=$(go tool cover -func=coverage.out | grep total | awk '{print substr($3, 1, length($3)-1)}')
+          min_coverage=$(cat min-coverage.txt)
+          if (( $(echo "$real_coverage < $min_coverage" | bc -l) )); then
+            echo "Coverage check failed: $real_coverage% is lower than the required $min_coverage%"
+            exit 1
+          else
+            echo "Coverage check passed: $real_coverage% meets the minimum requirement of $min_coverage%"
+          fi
diff --git a/min-coverage.txt b/min-coverage.txt
index d15a2cc..85322d0 100644
--- a/min-coverage.txt
+++ b/min-coverage.txt
@@ -1 +1 @@
-80
+79