add math test

.github/workflows/build.yml

@@ -24,3 +24,6 @@ jobs:
 
       - name: Build
         run: zig build -DzigCC --summary all
+
+      - name: Test
+        run: zig build test

build.zig

@@ -231,6 +231,17 @@ pub fn build(b: *Build) !void {
         b.getInstallStep().dependOn(&ldc.step);
     }
     buildShaders(b);
+
+    // build tests
+    const math_test = try ldcBuildStep(b, .{
+        .name = "test-math",
+        .kind = .@"test",
+        .target = b.host,
+        .artifact = sokol,
+        .sources = &.{b.fmt("{s}/src/handmade/math.d", .{rootPath()})},
+        .dflags = &.{},
+    });
+    b.default_step.dependOn(&math_test.step);
 }
 
 // Use LDC2 (https://github.com/ldc-developers/ldc) to compile the D examples
@@ -454,8 +465,13 @@ pub fn ldcBuildStep(b: *Build, options: DCompileStep) !*RunStep {
     const example_run = b.addSystemCommand(&.{b.pathJoin(&.{ b.install_path, "bin", options.name })});
     example_run.step.dependOn(&ldc_exec.step);
 
-    const run = b.step(b.fmt("run-{s}", .{options.name}), b.fmt("Run {s} example", .{options.name}));
-    run.dependOn(&example_run.step);
+    if (options.kind != .@"test") {
+        const run = b.step(b.fmt("run-{s}", .{options.name}), b.fmt("Run {s} example", .{options.name}));
+        run.dependOn(&example_run.step);
+    } else {
+        const tests = b.step("test", "Run all tests");
+        tests.dependOn(&example_run.step);
+    }
 
     return ldc_exec;
 }

src/handmade/math.d

@@ -211,7 +211,7 @@ float radians(float deg)
     return deg * (PI / 180.0);
 }
 
-@safe pure unittest
+@safe unittest
 {
     import std.math : isClose;
     // Vec3.zero test
@@ -224,7 +224,7 @@ float radians(float deg)
 
 }
 
-@safe pure unittest
+@safe unittest
 {
     import std.math : isClose;
     // Vec3.new test
@@ -237,7 +237,7 @@ float radians(float deg)
 
 }
 
-@safe pure unittest
+@safe unittest
 {
     import std.math : isClose;
     // Mat4.identity test