From 14b93071eca21c69b635bd77eb68057b2906ddab Mon Sep 17 00:00:00 2001 From: Klaus Aehlig Date: Mon, 22 Apr 2024 10:48:46 +0200 Subject: expressions: add "length" function Lists are somtimes used in configurations as replacement for tuples. Providing length gives an easy way to detect usage errors. --- test/buildtool/build_engine/expression/expression.test.cpp | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'test/buildtool/build_engine/expression/expression.test.cpp') diff --git a/test/buildtool/build_engine/expression/expression.test.cpp b/test/buildtool/build_engine/expression/expression.test.cpp index 18189baf..83550ebd 100644 --- a/test/buildtool/build_engine/expression/expression.test.cpp +++ b/test/buildtool/build_engine/expression/expression.test.cpp @@ -1010,6 +1010,19 @@ TEST_CASE("Expression Evaluation", "[expression]") { // NOLINT )"_json)); } + SECTION("length expression") { + auto expr = Expression::FromJson(R"( + { "type": "length" + , "$1": ["foo", "bar", "baz"] + } + )"_json); + REQUIRE(expr); + + auto result = expr.Evaluate(env, fcts); + REQUIRE(result); + CHECK(result == Expression::FromJson("3"_json)); + } + SECTION("keys expression") { auto expr = Expression::FromJson(R"( { "type": "keys" -- cgit v1.2.3