Start using node test runner instead of mocha

CHANGELOG.md

@@ -88,6 +88,7 @@
 - Remove the transformation of `foo(1,2)` into `Js.Internal.opaqueFullApply(Internal.opaque(f), 1, 2)`, and change the back-end to treat all applications as uncurried. https://github.com/rescript-lang/rescript-compiler/pull/6893
 - Remove `@uncurry` from ReScript sources (others, tests). https://github.com/rescript-lang/rescript-compiler/pull/6938
 - Remove leftover uncurried handling. https://github.com/rescript-lang/rescript-compiler/pull/6939 https://github.com/rescript-lang/rescript-compiler/pull/6940
+- Use node test runner instead of mocha. https://github.com/rescript-lang/rescript-compiler/pull/6956
 
 #### :nail_care: Polish
 

jscomp/test/Assert.res

@@ -0,0 +1,6 @@
+@module("node:assert") external ok: (bool, ~message: string=?) => unit = "ok"
+@module("node:assert") external equal: ('a, 'a, ~message: string=?) => unit = "strictEqual"
+@module("node:assert") external deepEqual: ('a, 'a, ~message: string=?) => unit = "deepStrictEqual"
+@module("node:assert")
+external notDeepEqual: ('a, 'a, ~message: string=?) => unit = "notDeepStrictEqual"
+@module("node:assert") external fail: (~message: string=?) => unit = "fail"

jscomp/test/NodeTest.res

@@ -0,0 +1,5 @@
+@module("node:test")
+external test: (string, unit => unit) => unit = "test"
+
+@module("node:test")
+external describe: (string, unit => unit) => unit = "describe"

jscomp/test/belt_float_ntest.res

@@ -0,0 +1,45 @@
+open NodeTest
+
+module F = Belt.Float
+
+let eq = (loc, a, b) => Assert.equal(a, b, ~message=loc)
+
+describe("Belt.Float", () => {
+  test("fromInt", () => {
+    eq(__LOC__, F.fromInt(1), 1.0)
+    eq(__LOC__, F.fromInt(-1), -1.0)
+  })
+
+  test("toInt", () => {
+    eq(__LOC__, F.toInt(1.0), 1)
+    eq(__LOC__, F.toInt(1.3), 1)
+    eq(__LOC__, F.toInt(1.7), 1)
+    eq(__LOC__, F.toInt(-1.0), -1)
+    eq(__LOC__, F.toInt(-1.5), -1)
+    eq(__LOC__, F.toInt(-1.7), -1)
+  })
+
+  test("fromString", () => {
+    eq(__LOC__, F.fromString("1"), Some(1.0))
+    eq(__LOC__, F.fromString("-1"), Some(-1.0))
+    eq(__LOC__, F.fromString("1.7"), Some(1.7))
+    eq(__LOC__, F.fromString("-1.0"), Some(-1.0))
+    eq(__LOC__, F.fromString("-1.5"), Some(-1.5))
+    eq(__LOC__, F.fromString("-1.7"), Some(-1.7))
+    eq(__LOC__, F.fromString("not a float"), None)
+  })
+
+  test("toString", () => {
+    eq(__LOC__, F.toString(1.0), "1")
+    eq(__LOC__, F.toString(-1.0), "-1")
+    eq(__LOC__, F.toString(-1.5), "-1.5")
+  })
+
+  test("operators", () => {
+    open! F
+    eq(__LOC__, 2.0 + 3.0, 5.0)
+    eq(__LOC__, 2.0 - 3.0, -1.0)
+    eq(__LOC__, 2.0 * 3.0, 6.0)
+    eq(__LOC__, 3.0 / 2.0, 1.5)
+  })
+})

jscomp/test/belt_int_ntest.res

@@ -0,0 +1,45 @@
+open NodeTest
+
+module I = Belt.Int
+
+let eq = (loc, a, b) => Assert.equal(a, b, ~message=loc)
+
+describe("Belt.Int", () => {
+  test("toFloat", () => {
+    eq(__LOC__, I.toFloat(1), 1.0)
+    eq(__LOC__, I.toFloat(-1), -1.0)
+  })
+
+  test("fromFloat", () => {
+    eq(__LOC__, I.fromFloat(1.0), 1)
+    eq(__LOC__, I.fromFloat(1.3), 1)
+    eq(__LOC__, I.fromFloat(1.7), 1)
+    eq(__LOC__, I.fromFloat(-1.0), -1)
+    eq(__LOC__, I.fromFloat(-1.5), -1)
+    eq(__LOC__, I.fromFloat(-1.7), -1)
+  })
+
+  test("fromString", () => {
+    eq(__LOC__, I.fromString("1"), Some(1))
+    eq(__LOC__, I.fromString("-1"), Some(-1))
+    eq(__LOC__, I.fromString("1.7"), Some(1))
+    eq(__LOC__, I.fromString("-1.0"), Some(-1))
+    eq(__LOC__, I.fromString("-1.5"), Some(-1))
+    eq(__LOC__, I.fromString("-1.7"), Some(-1))
+    eq(__LOC__, I.fromString("not an int"), None)
+  })
+
+  test("toString", () => {
+    eq(__LOC__, I.toString(1), "1")
+    eq(__LOC__, I.toString(-1), "-1")
+  })
+
+  test("operators", () => {
+    open! I
+
+    eq(__LOC__, 2 + 3, 5)
+    eq(__LOC__, 2 - 3, -1)
+    eq(__LOC__, 2 * 3, 6)
+    eq(__LOC__, 2 / 3, 0)
+  })
+})

jscomp/test/belt_mapint_ntest.res

@@ -0,0 +1,26 @@
+@@config({flags: ["-bs-no-cross-module-opt"]})
+
+open NodeTest
+
+let ok = (loc, a) => Assert.ok(a, ~message=loc)
+
+module M = Belt.Map.Int
+
+describe("Belt.Map.Int", () => {
+  test("set", () => {
+    let m = ref(M.empty)
+    let count = 100_0000 - 1
+
+    for i in 0 to count {
+      m := M.set(m.contents, i, i)
+    }
+    for i in 0 to count {
+      ok(__LOC__, M.get(m.contents, i) != None)
+    }
+    for i in 0 to count {
+      m := M.remove(m.contents, i)
+    }
+
+    ok(__LOC__, M.isEmpty(m.contents))
+  })
+})