From 4056c6dbcb133824709fd5bc14bbb56d856f0080 Mon Sep 17 00:00:00 2001
From: alex <alex@cloudware.io>
Date: Thu, 4 Aug 2022 12:18:00 +0200
Subject: [PATCH] build: add test subcommand

zig build test can now run tests defined in main.zig and all files it
imports due to std.testing.refAllDecls.
---
 build.zig    | 7 ++++++-
 src/main.zig | 5 +++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/build.zig b/build.zig
index bcc8e50..6c9ded1 100644
--- a/build.zig
+++ b/build.zig
@@ -17,7 +17,12 @@ pub fn build(b: *std.build.Builder) void {
     if (b.args) |args| {
         run_cmd.addArgs(args);
     }
-
     const run_step = b.step("run", "run the executable");
     run_step.dependOn(&run_cmd.step);
+
+    const exe_tests = b.addTest("src/main.zig");
+    exe_tests.setTarget(target);
+    exe_tests.setBuildMode(bmode);
+    const test_step = b.step("test", "run tests");
+    test_step.dependOn(&exe_tests.step);
 }
diff --git a/src/main.zig b/src/main.zig
index d67e08f..9bce252 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -176,3 +176,8 @@ fn zigStdPath(alloc: std.mem.Allocator) ![]const u8 {
     defer std.json.parseFree(Env, jenv, opt);
     return alloc.dupe(u8, jenv.std_dir);
 }
+
+test {
+    // run tests found in all @import'ed files.
+    std.testing.refAllDecls(@This());
+}