FormatterTest.cpp
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// Copyright (c) 2017-2022, University of Cincinnati, developed by Henry Schreiner
// under NSF AWARD 1414736 and by the respective contributors.
// All rights reserved.
//
// SPDX-License-Identifier: BSD-3-Clause
#ifdef CLI11_SINGLE_FILE
#include "CLI11.hpp"
#else
#include "CLI/CLI.hpp"
#endif
#include "catch.hpp"
#include <fstream>
using Catch::Matchers::Contains;
class SimpleFormatter : public CLI::FormatterBase {
public:
SimpleFormatter() : FormatterBase() {}
std::string make_help(const CLI::App *, std::string, CLI::AppFormatMode) const override {
return "This is really simple";
}
};
TEST_CASE("Formatter: Nothing", "[formatter]") {
CLI::App app{"My prog"};
app.formatter(std::make_shared<SimpleFormatter>());
std::string help = app.help();
CHECK("This is really simple" == help);
}
TEST_CASE("Formatter: NothingLambda", "[formatter]") {
CLI::App app{"My prog"};
app.formatter_fn(
[](const CLI::App *, std::string, CLI::AppFormatMode) { return std::string("This is really simple"); });
std::string help = app.help();
CHECK("This is really simple" == help);
}
TEST_CASE("Formatter: OptCustomize", "[formatter]") {
CLI::App app{"My prog"};
auto optfmt = std::make_shared<CLI::Formatter>();
optfmt->column_width(25);
optfmt->label("REQUIRED", "(MUST HAVE)");
app.formatter(optfmt);
int v{0};
app.add_option("--opt", v, "Something")->required();
std::string help = app.help();
CHECK_THAT(help, Contains("(MUST HAVE)"));
CHECK(help == "My prog\n"
"Usage: [OPTIONS]\n\n"
"Options:\n"
" -h,--help Print this help message and exit\n"
" --opt INT (MUST HAVE) Something\n");
}
TEST_CASE("Formatter: OptCustomizeSimple", "[formatter]") {
CLI::App app{"My prog"};
app.get_formatter()->column_width(25);
app.get_formatter()->label("REQUIRED", "(MUST HAVE)");
int v{0};
app.add_option("--opt", v, "Something")->required();
std::string help = app.help();
CHECK_THAT(help, Contains("(MUST HAVE)"));
CHECK(help == "My prog\n"
"Usage: [OPTIONS]\n\n"
"Options:\n"
" -h,--help Print this help message and exit\n"
" --opt INT (MUST HAVE) Something\n");
}
TEST_CASE("Formatter: OptCustomizeOptionText", "[formatter]") {
CLI::App app{"My prog"};
app.get_formatter()->column_width(25);
int v{0};
app.add_option("--opt", v, "Something")->option_text("(ARG)");
std::string help = app.help();
CHECK_THAT(help, Contains("(ARG)"));
CHECK(help == "My prog\n"
"Usage: [OPTIONS]\n\n"
"Options:\n"
" -h,--help Print this help message and exit\n"
" --opt (ARG) Something\n");
}
TEST_CASE("Formatter: FalseFlagExample", "[formatter]") {
CLI::App app{"My prog"};
app.get_formatter()->column_width(25);
app.get_formatter()->label("REQUIRED", "(MUST HAVE)");
int v{0};
app.add_flag("--opt,!--no_opt", v, "Something");
bool flag{false};
app.add_flag("!-O,--opt2,--no_opt2{false}", flag, "Something else");
std::string help = app.help();
CHECK_THAT(help, Contains("--no_opt{false}"));
CHECK_THAT(help, Contains("--no_opt2{false}"));
CHECK_THAT(help, Contains("-O{false}"));
}
TEST_CASE("Formatter: AppCustomize", "[formatter]") {
CLI::App app{"My prog"};
app.add_subcommand("subcom1", "This");
auto appfmt = std::make_shared<CLI::Formatter>();
appfmt->column_width(20);
appfmt->label("Usage", "Run");
app.formatter(appfmt);
app.add_subcommand("subcom2", "This");
std::string help = app.help();
CHECK(help == "My prog\n"
"Run: [OPTIONS] [SUBCOMMAND]\n\n"
"Options:\n"
" -h,--help Print this help message and exit\n\n"
"Subcommands:\n"
" subcom1 This\n"
" subcom2 This\n");
}
TEST_CASE("Formatter: AppCustomizeSimple", "[formatter]") {
CLI::App app{"My prog"};
app.add_subcommand("subcom1", "This");
app.get_formatter()->column_width(20);
app.get_formatter()->label("Usage", "Run");
app.add_subcommand("subcom2", "This");
std::string help = app.help();
CHECK(help == "My prog\n"
"Run: [OPTIONS] [SUBCOMMAND]\n\n"
"Options:\n"
" -h,--help Print this help message and exit\n\n"
"Subcommands:\n"
" subcom1 This\n"
" subcom2 This\n");
}
TEST_CASE("Formatter: AllSub", "[formatter]") {
CLI::App app{"My prog"};
CLI::App *sub = app.add_subcommand("subcom", "This");
sub->add_flag("--insub", "MyFlag");
std::string help = app.help("", CLI::AppFormatMode::All);
CHECK_THAT(help, Contains("--insub"));
CHECK_THAT(help, Contains("subcom"));
}
TEST_CASE("Formatter: AllSubRequired", "[formatter]") {
CLI::App app{"My prog"};
CLI::App *sub = app.add_subcommand("subcom", "This");
sub->add_flag("--insub", "MyFlag");
sub->required();
std::string help = app.help("", CLI::AppFormatMode::All);
CHECK_THAT(help, Contains("--insub"));
CHECK_THAT(help, Contains("subcom"));
CHECK_THAT(help, Contains("REQUIRED"));
}
TEST_CASE("Formatter: NamelessSub", "[formatter]") {
CLI::App app{"My prog"};
CLI::App *sub = app.add_subcommand("", "This subcommand");
sub->add_flag("--insub", "MyFlag");
std::string help = app.help("", CLI::AppFormatMode::Normal);
CHECK_THAT(help, Contains("--insub"));
CHECK_THAT(help, Contains("This subcommand"));
}
TEST_CASE("Formatter: NamelessSubInGroup", "[formatter]") {
CLI::App app{"My prog"};
CLI::App *sub = app.add_subcommand("", "This subcommand");
CLI::App *sub2 = app.add_subcommand("sub2", "subcommand2");
sub->add_flag("--insub", "MyFlag");
int val{0};
sub2->add_option("pos", val, "positional");
sub->group("group1");
sub2->group("group1");
std::string help = app.help("", CLI::AppFormatMode::Normal);
CHECK_THAT(help, Contains("--insub"));
CHECK_THAT(help, Contains("This subcommand"));
CHECK_THAT(help, Contains("group1"));
CHECK_THAT(help, Contains("sub2"));
CHECK(help.find("pos") == std::string::npos);
}