From b986fcfc996ec54e2f755b1161df1a6ceac009d4 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Fri, 13 May 2022 14:31:02 -0700
Subject: [PATCH] test-cases: honor -Dtest-filter argument from zig build

---
 src/test.zig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/test.zig b/src/test.zig
index 317e020dc2..492fa4ff53 100644
--- a/src/test.zig
+++ b/src/test.zig
@@ -1201,6 +1201,9 @@ pub const TestContext = struct {
             if (!build_options.have_llvm and case.backend == .llvm)
                 continue;
 
+            if (build_options.test_filter) |test_filter| {
+                if (std.mem.indexOf(u8, case.name, test_filter) == null) continue;
+            }
             var prg_node = root_node.start(case.name, case.updates.items.len);
             prg_node.activate();
             defer prg_node.end();