OCaml: Add coverage reporting

.gitignore

@@ -0,0 +1 @@
+ocaml/_coverage

ocaml/dune-project

@@ -24,6 +24,7 @@
     (depends
         (ocaml (>= 5.3.0))
         (dune (>= 3.17.2))
+        (bisect_ppx (and :dev (>= 2.5.0)))
     )
 )
 

ocaml/justfile

@@ -0,0 +1,25 @@
+default:
+    @just --list
+
+build :
+    dune build
+
+test :
+    dune build
+    dune test
+
+format :
+    dune fmt; dune promote
+
+check-format :
+    dune build fmt
+
+cover :
+    find . -name '*.coverage' -exec rm -v '{}' ';'
+    dune build
+    dune runtest --instrument-with bisect_ppx --force
+    bisect-ppx-report html
+    bisect-ppx-report summary
+
+clean :
+    dune clean

ocaml/lib/dune

@@ -1,6 +1,7 @@
 (library
     (name tori)
     (libraries unix)
+    (instrumentation (backend bisect_ppx))
 )
 
 (include_subdirs qualified)

ocaml/tori.opam

@@ -18,6 +18,7 @@ doc: "https://tori.jutty.dev/docs"
 depends: [
   "ocaml" {>= "5.3.0"}
   "dune" {>= "3.17" & >= "3.17.2"}
+  "bisect_ppx" {dev & >= "2.5.0"}
   "odoc" {with-doc}
 ]
 build: [