diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 1c0658b..c581be8 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -44,7 +44,7 @@ This project uses [the PSR-2 coding standards](http://www.php-fig.org/psr/psr-2/
 [PHPUnit](https://phpunit.de/) is included as a development dependency, and should be run regularly. When submitting changes, please be sure to add or update unit tests accordingly. You may run unit tests at any time by running:
 
 ```bash
-$ ./vendor/bin/phpunit
+$ composer test
 ```
 
 #### Code coverage
diff --git a/.github/workflows/code-coverage.yml b/.github/workflows/code-coverage.yml
new file mode 100644
index 0000000..0f2b1a5
--- /dev/null
+++ b/.github/workflows/code-coverage.yml
@@ -0,0 +1,30 @@
+name: Code Coverage
+
+on: [pull_request]
+
+jobs:
+  coverage:
+    name: Report code coverage
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.2'
+          coverage: xdebug
+
+      - name: Install Composer dependencies
+        uses: ramsey/composer-install@v2
+
+      - name: Run test suite
+        run: vendor/bin/simple-phpunit --coverage-text --coverage-clover=tests/coverage
+
+      - name: Publish to Coveralls
+        uses: coverallsapp/github-action@v2
+        with:
+          files: tests/coverage
+          format: clover
+          fail-on-error: false
diff --git a/.gitignore b/.gitignore
index 235ce45..29813da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,8 @@
 *.DS_Store
-tests/coverage
-vendor
 .phpunit.result.cache
 .vscode
+tests/coverage
+vendor
 
 # The composer.lock file is not needed, as this is a library whose dependencies
 # will depend on the version of PHP being used.
diff --git a/composer.json b/composer.json
index a280d4a..c704177 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,7 @@
             "simple-phpunit --testdox"
         ],
         "test-coverage": [
-            "phpdbg -qrr -d memory_limit=-1 ./vendor/bin/simple-phpunit --coverage-html=tests/coverage --colors=always"
+            "XDEBUG_MODE=coverage ./vendor/bin/simple-phpunit --coverage-html=tests/coverage --colors=always"
         ]
     },
     "scripts-descriptions": {
diff --git a/src/MarkupAssertionsTrait.php b/src/MarkupAssertionsTrait.php
index 052cfe0..14b4906 100644
--- a/src/MarkupAssertionsTrait.php
+++ b/src/MarkupAssertionsTrait.php
@@ -128,7 +128,7 @@ public function assertElementContains($contents, $selector = '', $markup = '', $
     {
         $method = method_exists($this, 'assertStringContainsString')
             ? 'assertStringContainsString'
-            : 'assertContains';
+            : 'assertContains'; // @codeCoverageIgnore
 
         $this->$method(
             $contents,
@@ -153,7 +153,7 @@ public function assertElementNotContains($contents, $selector = '', $markup = ''
     {
         $method = method_exists($this, 'assertStringNotContainsString')
             ? 'assertStringNotContainsString'
-            : 'assertNotContains';
+            : 'assertNotContains'; // @codeCoverageIgnore
 
         $this->$method(
             $contents,
@@ -178,7 +178,7 @@ public function assertElementRegExp($regexp, $selector = '', $markup = '', $mess
     {
         $method = method_exists($this, 'assertMatchesRegularExpression')
             ? 'assertMatchesRegularExpression'
-            : 'assertRegExp';
+            : 'assertRegExp'; // @codeCoverageIgnore
 
         $this->$method(
             $regexp,
@@ -203,7 +203,7 @@ public function assertElementNotRegExp($regexp, $selector = '', $markup = '', $m
     {
         $method = method_exists($this, 'assertDoesNotMatchRegularExpression')
             ? 'assertDoesNotMatchRegularExpression'
-            : 'assertNotRegExp';
+            : 'assertNotRegExp'; // @codeCoverageIgnore
 
         $this->$method(
             $regexp,