diff --git a/tests/cases/fourslash/formatComments.ts b/tests/cases/fourslash/formatComments.ts
new file mode 100644
index 00000000000..083ba6c078d
--- /dev/null
+++ b/tests/cases/fourslash/formatComments.ts
@@ -0,0 +1,24 @@
+/// <reference path="fourslash.ts"/>
+
+////_.chain()
+////// wow/*callChain1*/
+////  .then()
+////// waa/*callChain2*/
+////    .then();
+////wow(
+////  3,
+////// uaa/*argument1*/
+////    4
+////// wua/*argument2*/
+////);
+
+format.document();
+
+goTo.marker("callChain1");
+verify.currentLineContentIs("    // wow");
+goTo.marker("callChain2");
+verify.currentLineContentIs("    // waa");
+goTo.marker("argument1");
+verify.currentLineContentIs("    // uaa");
+goTo.marker("argument2");
+verify.currentLineContentIs("    // wua");
\ No newline at end of file