diff --git a/tests/cases/conformance/es2017/useStringPadding1.ts b/tests/cases/conformance/es2017/useStringPadding1.ts
new file mode 100644
index 0000000000000..42a04fc4e62bf
--- /dev/null
+++ b/tests/cases/conformance/es2017/useStringPadding1.ts
@@ -0,0 +1,7 @@
+// @target: es5
+// @lib: es5,es2017.string
+
+var str = 'foo';
+
+str.padStart(5, '-');
+str.padEnd(5, '-');
diff --git a/tests/cases/conformance/es2017/useStringPadding2.ts b/tests/cases/conformance/es2017/useStringPadding2.ts
new file mode 100644
index 0000000000000..98a3c0b90b3c0
--- /dev/null
+++ b/tests/cases/conformance/es2017/useStringPadding2.ts
@@ -0,0 +1,7 @@
+// @target: es5
+// @lib: es5
+
+var str = 'foo';
+
+str.padStart(5, '-');
+str.padEnd(5, '-');
diff --git a/tests/cases/conformance/es2017/useStringPadding3.ts b/tests/cases/conformance/es2017/useStringPadding3.ts
new file mode 100644
index 0000000000000..d5a1a3982ba53
--- /dev/null
+++ b/tests/cases/conformance/es2017/useStringPadding3.ts
@@ -0,0 +1,7 @@
+// @target: es6
+//
+
+var str = 'foo';
+
+str.padStart(5, '-');
+str.padEnd(5, '-');
diff --git a/tests/cases/conformance/es2017/useStringPadding4.ts b/tests/cases/conformance/es2017/useStringPadding4.ts
new file mode 100644
index 0000000000000..d55cdac11ac5e
--- /dev/null
+++ b/tests/cases/conformance/es2017/useStringPadding4.ts
@@ -0,0 +1,7 @@
+// @target: es6
+// @lib: es2017
+
+var str = 'foo';
+
+str.padStart(5, '-');
+str.padEnd(5, '-');