diff --git a/test/api/InputHandler.api.ts b/test/api/InputHandler.api.ts
index 9ca0c943..05b16010 100644
--- a/test/api/InputHandler.api.ts
+++ b/test/api/InputHandler.api.ts
@@ -196,6 +196,36 @@ describe('InputHandler Integration Tests', function(): void {
       assert.deepEqual(await getLinesAsArray(5), ['   4', '    5', 'abc', 'def', 'ghi']);
     });
 
+    it('IL: Insert Ps Line(s) (default = 1) - CSI Ps L', async function(): Promise<any> {
+      await page.evaluate(`
+        // Default
+        window.term.write('foo\x1b[La')
+        // Explicit
+        window.term.write('\x1b[2Lb')
+      `);
+      assert.deepEqual(await getLinesAsArray(4), ['b', '', 'a', 'foo']);
+    });
+
+    it('DL: Delete Ps Line(s) (default = 1) - CSI Ps M', async function(): Promise<any> {
+      await page.evaluate(`
+        // Default
+        window.term.write('a\\nb\x1b[1F\x1b[M')
+        // Explicit
+        window.term.write('\x1b[1Ed\\ne\\nf\x1b[2F\x1b[2M')
+      `);
+      assert.deepEqual(await getLinesAsArray(5), [' b', '  f', '', '', '']);
+    });
+
+    it('DCH: Delete Ps Character(s) (default = 1) - CSI Ps P', async function(): Promise<any> {
+      await page.evaluate(`
+        // Default
+        window.term.write('abc\x1b[1;1H\x1b[P')
+        // Explicit
+        window.term.write('\\n\\rdef\x1b[2;1H\x1b[2P')
+      `);
+      assert.deepEqual(await getLinesAsArray(2), ['bc', 'f']);
+    });
+
     describe('DSR: Device Status Report', () => {
       it('Status Report - CSI 5 n', async function(): Promise<any> {
         await page.evaluate(`