Shove kicad2step into pcbnew itself with a new cli

thirdparty/argparse/test/test_help.cpp

@@ -0,0 +1,75 @@
+#include <argparse/argparse.hpp>
+#include <doctest.hpp>
+#include <sstream>
+
+using doctest::test_suite;
+
+TEST_CASE("Users can format help message" * test_suite("help")) {
+  argparse::ArgumentParser program("test");
+
+  SUBCASE("Simple arguments") {
+    program.add_argument("input").help("positional input");
+    program.add_argument("-c").help("optional input");
+  }
+  SUBCASE("Default values") {
+    program.add_argument("-a").default_value(42);
+    program.add_argument("-b").default_value(4.4e-7);
+    program.add_argument("-c")
+        .default_value(std::vector<int>{1, 2, 3, 4, 5})
+        .nargs(5);
+    program.add_argument("-d").default_value("I am a string");
+    program.add_argument("-e").default_value(std::optional<float>{});
+    program.add_argument("-f").default_value(false);
+  }
+  std::ostringstream s;
+  s << program;
+  REQUIRE_FALSE(s.str().empty());
+
+  auto msg = program.help().str();
+  REQUIRE(msg == s.str());
+}
+
+TEST_CASE("Users can override the help options" * test_suite("help")) {
+  GIVEN("a program that meant to take -h as a normal option") {
+    argparse::ArgumentParser program("test");
+    program.add_argument("input");
+    program.add_argument("-h").implicit_value('h').default_value('x');
+
+    WHEN("provided -h without fulfilling other requirements") {
+      THEN("validation fails") {
+        REQUIRE_THROWS_AS(program.parse_args({"test", "-h"}),
+                          std::runtime_error);
+      }
+    }
+
+    WHEN("provided arguments to all parameters") {
+      program.parse_args({"test", "-h", "some input"});
+
+      THEN("these parameters get their values") {
+        REQUIRE(program["-h"] == 'h');
+        REQUIRE(program.get("input") == "some input");
+      }
+    }
+  }
+}
+
+TEST_CASE("Users can disable default -h/--help" * test_suite("help")) {
+  argparse::ArgumentParser program("test", "1.0",
+                                   argparse::default_arguments::version);
+  REQUIRE_THROWS_AS(program.parse_args({"test", "-h"}), std::runtime_error);
+}
+
+TEST_CASE("Users can replace default -h/--help" * test_suite("help")) {
+  argparse::ArgumentParser program("test", "1.0",
+                                   argparse::default_arguments::version);
+  std::stringstream buffer;
+  program.add_argument("-h", "--help")
+      .action([&](const auto &) { buffer << program; })
+      .default_value(false)
+      .implicit_value(true)
+      .nargs(0);
+
+  REQUIRE(buffer.str().empty());
+  program.parse_args({"test", "--help"});
+  REQUIRE_FALSE(buffer.str().empty());
+}