From 4e69307074215b42e5fb4e152a67b1403b1d3929 Mon Sep 17 00:00:00 2001
From: Daniel Imms <2193314+Tyriar@users.noreply.github.com>
Date: Sat, 9 Sep 2023 05:59:24 -0700
Subject: [PATCH] Add regression test

---
 test/playwright/SharedRendererTests.ts | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/test/playwright/SharedRendererTests.ts b/test/playwright/SharedRendererTests.ts
index f8d70cc9..4fb6db13 100644
--- a/test/playwright/SharedRendererTests.ts
+++ b/test/playwright/SharedRendererTests.ts
@@ -144,7 +144,7 @@ export function injectSharedRendererTests(ctx: ISharedRendererTestContext): void
     await pollFor(ctx.value.page, () => getCellColor(ctx.value, 8, 1), [22, 23, 24, 255]);
   });
 
-  test('foreground 0-15 inivisible', async () => {
+  test('foreground 0-15 invisible', async () => {
     const theme: ITheme = {
       black: '#010203',
       red: '#040506',
@@ -167,7 +167,7 @@ export function injectSharedRendererTests(ctx: ISharedRendererTestContext): void
     await pollFor(ctx.value.page, () => getCellColor(ctx.value, 8, 1), [0, 0, 0, 255]);
   });
 
-  test('background 0-15 inivisible', async () => {
+  test('background 0-15 invisible', async () => {
     const theme: ITheme = {
       black: '#010203',
       red: '#040506',
@@ -1070,6 +1070,17 @@ export function injectSharedRendererTests(ctx: ISharedRendererTestContext): void
       await pollFor(ctx.value.page, () => getCellColor(ctx.value, 2, 1), [0, 0, 255, 255]); // inverse background of ' ' should be decoration bg override
     });
   });
+
+  test.describe('regression tests', () => {
+    test('#4758: multiple invisible text characters without SGR change should not be rendered', async () => {
+      // Regression test: #4758 when multiple invisible characters are used
+      await ctx.value.proxy.writeln(`\x1b[8m■■`);
+      // Full refresh as the before result is the same as after
+      await ctx.value.proxy.refresh(0, await ctx.value.proxy.rows - 1);
+      await pollFor(ctx.value.page, () => getCellColor(ctx.value, 1, 1), [0, 0, 0, 255]);
+      await pollFor(ctx.value.page, () => getCellColor(ctx.value, 2, 1), [0, 0, 0, 255]);
+    });
+  });
 }
 
 /**