yaml-testsuite implementation

.github/workflows/ci.yml

@@ -23,3 +23,20 @@ jobs:
     - run: zig fmt --check src 
     - run: zig build test
     - run: zig build run
+
+  spec-test:
+    name: YAML Test Suite
+    runs-on: ${{ matrix.os }}-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos, ubuntu]
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+      - uses: mlugg/setup-zig@v1
+        with:
+          version: master
+      - run: zig build test -Denable-spec-tests

.gitmodules

@@ -0,0 +1,4 @@
+[submodule "test/yaml-test-suite"]
+	path = test/yaml-test-suite
+	url = https://github.com/yaml/yaml-test-suite.git
+	branch = v2022-01-17

build.zig

@@ -1,4 +1,5 @@
 const std = @import("std");
+const SpecTest = @import("test/spec.zig");
 
 pub fn build(b: *std.Build) void {
     const target = b.standardTargetOptions(.{});
@@ -48,4 +49,16 @@ pub fn build(b: *std.Build) void {
     });
     e2e_tests.root_module.addImport("yaml", yaml_module);
     test_step.dependOn(&b.addRunArtifact(e2e_tests).step);
+
+    const enable_spec_tests = b.option(bool, "enable-spec-tests", "Enable YAML Test Suite") orelse false;
+    if (enable_spec_tests) {
+        const gen = SpecTest.create(b);
+        var spec_tests = b.addTest(.{
+            .root_source_file = gen.path(),
+            .target = target,
+            .optimize = optimize,
+        });
+        spec_tests.root_module.addImport("yaml", yaml_module);
+        test_step.dependOn(&b.addRunArtifact(spec_tests).step);
+    }
 }