From d4546d58bed6dbf887f37225a4255150817333f2 Mon Sep 17 00:00:00 2001
From: Brett Broadhurst <brettbroadhurst@gmail.com>
Date: Wed, 18 Mar 2026 03:57:02 -0600
Subject: [PATCH] chore: configure kcov for test coverage

---
 build.zig                                      | 18 ++++++++++++++++++
 src/{ => Story}/runtime_tests.zig              |  2 +-
 src/{ => Story}/testdata/hello-world/input.txt |  0
 src/{ => Story}/testdata/hello-world/story.ink |  0
 .../testdata/hello-world/transcript.txt        |  0
 .../testdata/monsieur-fogg/input.txt           |  0
 .../testdata/monsieur-fogg/story.ink           |  0
 .../testdata/monsieur-fogg/transcript.txt      |  0
 src/root.zig                                   |  2 +-
 9 files changed, 20 insertions(+), 2 deletions(-)
 rename src/{ => Story}/runtime_tests.zig (98%)
 rename src/{ => Story}/testdata/hello-world/input.txt (100%)
 rename src/{ => Story}/testdata/hello-world/story.ink (100%)
 rename src/{ => Story}/testdata/hello-world/transcript.txt (100%)
 rename src/{ => Story}/testdata/monsieur-fogg/input.txt (100%)
 rename src/{ => Story}/testdata/monsieur-fogg/story.ink (100%)
 rename src/{ => Story}/testdata/monsieur-fogg/transcript.txt (100%)

diff --git a/build.zig b/build.zig
index 6d6eb72..73ab78f 100644
--- a/build.zig
+++ b/build.zig
@@ -1,6 +1,8 @@
 const std = @import("std");
 
 pub fn build(b: *std.Build) void {
+    const use_llvm = true;
+
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
     const mod = b.addModule("ink", .{
@@ -32,13 +34,29 @@ pub fn build(b: *std.Build) void {
 
     const mod_tests = b.addTest(.{
         .root_module = mod,
+        .use_llvm = use_llvm,
+        .use_lld = use_llvm,
     });
     const run_mod_tests = b.addRunArtifact(mod_tests);
+
     const exe_tests = b.addTest(.{
         .root_module = exe.root_module,
+        .use_llvm = use_llvm,
+        .use_lld = use_llvm,
     });
     const run_exe_tests = b.addRunArtifact(exe_tests);
+
     const test_step = b.step("test", "Run tests");
     test_step.dependOn(&run_mod_tests.step);
     test_step.dependOn(&run_exe_tests.step);
+
+    const run_cover = b.addSystemCommand(&.{
+        "kcov",
+        "--clean",
+        "--include-pattern=src/",
+        b.pathJoin(&.{ b.install_path, "cover" }),
+    });
+    run_cover.addArtifactArg(mod_tests);
+    const cover_step = b.step("cover", "Generate test coverage report");
+    cover_step.dependOn(&run_cover.step);
 }
diff --git a/src/runtime_tests.zig b/src/Story/runtime_tests.zig
similarity index 98%
rename from src/runtime_tests.zig
rename to src/Story/runtime_tests.zig
index 07c28ba..1ed4691 100644
--- a/src/runtime_tests.zig
+++ b/src/Story/runtime_tests.zig
@@ -1,6 +1,6 @@
 const std = @import("std");
 const fatal = std.process.fatal;
-const ink = @import("root.zig");
+const ink = @import("../root.zig");
 
 const Options = struct {
     input_reader: *std.Io.Reader,
diff --git a/src/testdata/hello-world/input.txt b/src/Story/testdata/hello-world/input.txt
similarity index 100%
rename from src/testdata/hello-world/input.txt
rename to src/Story/testdata/hello-world/input.txt
diff --git a/src/testdata/hello-world/story.ink b/src/Story/testdata/hello-world/story.ink
similarity index 100%
rename from src/testdata/hello-world/story.ink
rename to src/Story/testdata/hello-world/story.ink
diff --git a/src/testdata/hello-world/transcript.txt b/src/Story/testdata/hello-world/transcript.txt
similarity index 100%
rename from src/testdata/hello-world/transcript.txt
rename to src/Story/testdata/hello-world/transcript.txt
diff --git a/src/testdata/monsieur-fogg/input.txt b/src/Story/testdata/monsieur-fogg/input.txt
similarity index 100%
rename from src/testdata/monsieur-fogg/input.txt
rename to src/Story/testdata/monsieur-fogg/input.txt
diff --git a/src/testdata/monsieur-fogg/story.ink b/src/Story/testdata/monsieur-fogg/story.ink
similarity index 100%
rename from src/testdata/monsieur-fogg/story.ink
rename to src/Story/testdata/monsieur-fogg/story.ink
diff --git a/src/testdata/monsieur-fogg/transcript.txt b/src/Story/testdata/monsieur-fogg/transcript.txt
similarity index 100%
rename from src/testdata/monsieur-fogg/transcript.txt
rename to src/Story/testdata/monsieur-fogg/transcript.txt
diff --git a/src/root.zig b/src/root.zig
index 6864bc1..eaf4636 100644
--- a/src/root.zig
+++ b/src/root.zig
@@ -6,5 +6,5 @@ test {
     _ = tokenizer;
     _ = Ast;
     _ = Story;
-    _ = @import("runtime_tests.zig");
+    _ = @import("Story/runtime_tests.zig");
 }