diff --git a/.automation/test/csharp/README.md b/.automation/test/csharp/README.md
new file mode 100644
index 00000000..7c284115
--- /dev/null
+++ b/.automation/test/csharp/README.md
@@ -0,0 +1,19 @@
+# CSS Test Cases
+
+This folder holds the test cases for **CSS**.
+
+## Additional Docs
+
+No Additional information is needed for this test case.
+
+## Good Test Cases
+
+The test cases denoted: `LANGUAGE_good_FILE.EXTENSION` are all valid, and should pass successfully when linted.
+
+- **Note:** They are linted utilizing the default linter rules.
+
+## Bad Test Cases
+
+The test cases denoted: `LANGUAGE_bad_FILE.EXTENSION` are **NOT** valid, and should trigger errors when linted.
+
+- **Note:** They are linted utilizing the default linter rules.
diff --git a/.automation/test/csharp/csharp_bad_01.cs b/.automation/test/csharp/csharp_bad_01.cs
new file mode 100644
index 00000000..6ae90d7e
--- /dev/null
+++ b/.automation/test/csharp/csharp_bad_01.cs
@@ -0,0 +1,9 @@
+/* Bad */
+/* Multi-line */
+/* Comment */
+.selector-3[type="text"] {
+    background: linear-gradient(#FFFFFF, rgba(0, 0, 0, 0.8));
+    box-sizing: border-box;
+    display: block;
+    color: #AAAAAA;
+}
diff --git a/.automation/test/csharp/csharp_good_01.cs b/.automation/test/csharp/csharp_good_01.cs
new file mode 100644
index 00000000..a126e5b2
--- /dev/null
+++ b/.automation/test/csharp/csharp_good_01.cs
@@ -0,0 +1,22 @@
+/**
+ * Multi-line comment
+ */
+
+.selector-1,
+.selector-2,
+.selector-3[type="text"] {
+  background: linear-gradient(#fff, rgba(0, 0, 0, 0.8));
+  box-sizing: border-box;
+  display: block;
+  color: #333;
+}
+
+.selector-a,
+.selector-b:not(:first-child) {
+  padding: 10px !important;
+  top: calc(calc(1em * 2) / 3);
+}
+
+.selector-x { width: 10%; }
+.selector-y { width: 20%; }
+.selector-z { width: 30%; }
diff --git a/.automation/test/csharp/reports/expected-CSHARP.tap.ignored b/.automation/test/csharp/reports/expected-CSHARP.tap.ignored
new file mode 100644
index 00000000..98d94702
--- /dev/null
+++ b/.automation/test/csharp/reports/expected-CSHARP.tap.ignored
@@ -0,0 +1,7 @@
+TAP version 13
+1..2
+not ok 1 - css_bad_01.css
+  ---
+  message: \ncss/css_bad_01.css\n 2 1   ✖  Expected empty line before comment   comment-empty-line-before\n 3 1   ✖  Expected empty line before comment   comment-empty-line-before\n 5 5   ✖  Expected indentation of 2 spaces     indentation              \n 5 33  ✖  Expected "#FFFFFF" to be "#ffffff"   color-hex-case           \n 5 33  ✖  Expected "#FFFFFF" to be "#FFF"      color-hex-length         \n 6 5   ✖  Expected indentation of 2 spaces     indentation              \n 7 5   ✖  Expected indentation of 2 spaces     indentation              \n 8 5   ✖  Expected indentation of 2 spaces     indentation              \n 8 12  ✖  Expected "#AAAAAA" to be "#aaaaaa"   color-hex-case           \n 8 12  ✖  Expected "#AAAAAA" to be "#AAA"      color-hex-length\n
+  ...
+ok 2 - css_good_01.css
diff --git a/lib/worker.sh b/lib/worker.sh
index e2afbee3..4757931b 100755
--- a/lib/worker.sh
+++ b/lib/worker.sh
@@ -611,6 +611,7 @@ function RunTestCases() {
   TestCodebase "CLOUDFORMATION" "cfn-lint" "cfn-lint --config-file ${CLOUDFORMATION_LINTER_RULES}" ".*\.\(json\|yml\|yaml\)\$" "cloudformation"
   TestCodebase "CLOJURE" "clj-kondo" "clj-kondo --config ${CLOJURE_LINTER_RULES} --lint" ".*\.\(clj\|cljs\|cljc\|edn\)\$" "clojure"
   TestCodebase "COFFEESCRIPT" "coffeelint" "coffeelint -f ${COFFEESCRIPT_LINTER_RULES}" ".*\.\(coffee\)\$" "coffeescript"
+  TestCodebase "CSHARP" "dotnet-format" "dotnet-format --check --include .*\.\(cs\)\$" "csharp"
   TestCodebase "CSS" "stylelint" "stylelint --config ${CSS_LINTER_RULES}" ".*\.\(css\|scss\|sass\)\$" "css"
   TestCodebase "DART" "dart" "dartanalyzer --fatal-infos  --fatal-warnings --options ${DART_LINTER_RULES}" ".*\.\(dart\)\$" "dart"
   TestCodebase "DOCKERFILE" "dockerfilelint" "dockerfilelint -c ${DOCKERFILE_LINTER_RULES}" ".*\(Dockerfile\)\$" "docker"