From 1cf17b9a2bd064e5fbf8092bab857fe8504d9427 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20L=C3=BCck?= <christian@clue.engineering>
Date: Fri, 21 Apr 2023 13:04:01 +0200
Subject: [PATCH] Update test suite to ensure 100% code coverage

---
 .github/workflows/ci.yml | 10 ++++++++--
 README.md                |  9 +++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 21bdbe4..e7e8566 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,10 +30,16 @@ jobs:
           php-version: ${{ matrix.php }}
           coverage: xdebug
       - run: composer install
-      - run: vendor/bin/phpunit --coverage-text
+      - run: vendor/bin/phpunit --coverage-text --coverage-clover=clover.xml
         if: ${{ matrix.php >= 7.3 }}
-      - run: vendor/bin/phpunit --coverage-text -c phpunit.xml.legacy
+      - run: vendor/bin/phpunit --coverage-text --coverage-clover=clover.xml -c phpunit.xml.legacy
         if: ${{ matrix.php < 7.3 }}
+      - name: Check 100% code coverage
+        shell: php {0}
+        run: |
+          <?php
+          $metrics = simplexml_load_file('clover.xml')->project->metrics;
+          exit((int) $metrics['statements'] === (int) $metrics['coveredstatements'] ? 0 : 1);
 
   PHPUnit-hhvm:
     name: PHPUnit (HHVM)
diff --git a/README.md b/README.md
index c6b4793..6b4880d 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # clue/reactphp-flux
 
 [![CI status](https://github.com/clue/reactphp-flux/actions/workflows/ci.yml/badge.svg)](https://github.com/clue/reactphp-flux/actions)
+[![code coverage](https://img.shields.io/badge/code%20coverage-100%25-success)](#tests)
 [![installs on Packagist](https://img.shields.io/packagist/dt/clue/reactphp-flux?color=blue&label=installs%20on%20Packagist)](https://packagist.org/packages/clue/reactphp-flux)
 
 Flux, the lightweight stream processor to concurrently do many (but not too many) things at once,
@@ -683,6 +684,14 @@ To run the test suite, go to the project root and run:
 vendor/bin/phpunit
 ```
 
+The test suite is set up to always ensure 100% code coverage across all
+supported environments. If you have the Xdebug extension installed, you can also
+generate a code coverage report locally like this:
+
+```bash
+XDEBUG_MODE=coverage vendor/bin/phpunit --coverage-text
+```
+
 ## License
 
 This project is released under the permissive [MIT license](LICENSE).