HelpTest.cpp
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#ifdef CLI_SINGLE_FILE
#include "CLI11.hpp"
#else
#include "CLI/CLI.hpp"
#endif
#include "gtest/gtest.h"
#include "gmock/gmock.h"
#include <fstream>
using ::testing::HasSubstr;
using ::testing::Not;
TEST(THelp, Basic) {
CLI::App app{"My prog"};
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("My prog"));
EXPECT_THAT(help, HasSubstr("-h,--help"));
EXPECT_THAT(help, HasSubstr("Options:"));
EXPECT_THAT(help, HasSubstr("Usage:"));
}
TEST(THelp, Footer) {
CLI::App app{"My prog"};
app.set_footer("Report bugs to bugs@example.com");
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("My prog"));
EXPECT_THAT(help, HasSubstr("-h,--help"));
EXPECT_THAT(help, HasSubstr("Options:"));
EXPECT_THAT(help, HasSubstr("Usage:"));
EXPECT_THAT(help, HasSubstr("Report bugs to bugs@example.com"));
}
TEST(THelp, OptionalPositional) {
CLI::App app{"My prog"};
std::string x;
app.add_option("something", x, "My option here");
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("My prog"));
EXPECT_THAT(help, HasSubstr("-h,--help"));
EXPECT_THAT(help, HasSubstr("Options:"));
EXPECT_THAT(help, HasSubstr("Positionals:"));
EXPECT_THAT(help, HasSubstr("something TEXT"));
EXPECT_THAT(help, HasSubstr("My option here"));
EXPECT_THAT(help, HasSubstr("Usage: program [OPTIONS] [something]"));
}
TEST(THelp, Hidden) {
CLI::App app{"My prog"};
std::string x;
app.add_option("something", x, "My option here")->group("");
std::string y;
app.add_option("--another", y)->group("");
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("My prog"));
EXPECT_THAT(help, HasSubstr("-h,--help"));
EXPECT_THAT(help, HasSubstr("Options:"));
EXPECT_THAT(help, HasSubstr("[something]"));
EXPECT_THAT(help, Not(HasSubstr("something ")));
EXPECT_THAT(help, Not(HasSubstr("another")));
}
TEST(THelp, OptionalPositionalAndOptions) {
CLI::App app{"My prog"};
app.add_flag("-q,--quick");
std::string x;
app.add_option("something", x, "My option here");
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("My prog"));
EXPECT_THAT(help, HasSubstr("-h,--help"));
EXPECT_THAT(help, HasSubstr("Options:"));
EXPECT_THAT(help, HasSubstr("Usage: program [OPTIONS] [something]"));
}
TEST(THelp, RequiredPositionalAndOptions) {
CLI::App app{"My prog"};
app.add_flag("-q,--quick");
std::string x;
app.add_option("something", x, "My option here")->required();
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("My prog"));
EXPECT_THAT(help, HasSubstr("-h,--help"));
EXPECT_THAT(help, HasSubstr("Options:"));
EXPECT_THAT(help, HasSubstr("Positionals:"));
EXPECT_THAT(help, HasSubstr("Usage: program [OPTIONS] something"));
}
TEST(THelp, MultiOpts) {
CLI::App app{"My prog"};
std::vector<int> x, y;
app.add_option("-q,--quick", x, "Disc")->expected(2);
app.add_option("-v,--vals", y, "Other");
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("My prog"));
EXPECT_THAT(help, Not(HasSubstr("Positionals:")));
EXPECT_THAT(help, HasSubstr("Usage: program [OPTIONS]"));
EXPECT_THAT(help, HasSubstr("INT x 2"));
EXPECT_THAT(help, HasSubstr("INT ..."));
}
TEST(THelp, VectorOpts) {
CLI::App app{"My prog"};
std::vector<int> x = {1, 2};
app.add_option("-q,--quick", x, "", true);
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("INT=[1,2] ..."));
}
TEST(THelp, MultiPosOpts) {
CLI::App app{"My prog"};
std::vector<int> x, y;
app.add_option("quick", x, "Disc")->expected(2);
app.add_option("vals", y, "Other");
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("My prog"));
EXPECT_THAT(help, HasSubstr("Positionals:"));
EXPECT_THAT(help, HasSubstr("Usage: program [OPTIONS]"));
EXPECT_THAT(help, HasSubstr("INT x 2"));
EXPECT_THAT(help, HasSubstr("INT ..."));
EXPECT_THAT(help, HasSubstr("[quick(2x)]"));
EXPECT_THAT(help, HasSubstr("[vals...]"));
}
TEST(THelp, EnvName) {
CLI::App app{"My prog"};
std::string input;
app.add_option("--something", input)->envname("SOME_ENV");
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("SOME_ENV"));
}
TEST(THelp, Requires) {
CLI::App app{"My prog"};
CLI::Option *op1 = app.add_flag("--op1");
app.add_flag("--op2")->requires(op1);
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("Requires: --op1"));
}
TEST(THelp, RequiresPositional) {
CLI::App app{"My prog"};
int x, y;
CLI::Option *op1 = app.add_option("op1", x, "one");
app.add_option("op2", y, "two")->requires(op1);
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("Positionals:"));
EXPECT_THAT(help, HasSubstr("Requires: op1"));
}
TEST(THelp, Excludes) {
CLI::App app{"My prog"};
CLI::Option *op1 = app.add_flag("--op1");
app.add_flag("--op2")->excludes(op1);
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("Excludes: --op1"));
}
TEST(THelp, ExcludesPositional) {
CLI::App app{"My prog"};
int x, y;
CLI::Option *op1 = app.add_option("op1", x);
app.add_option("op2", y)->excludes(op1);
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("Positionals:"));
EXPECT_THAT(help, HasSubstr("Excludes: op1"));
}
TEST(THelp, ManualSetters) {
CLI::App app{"My prog"};
int x = 1;
CLI::Option *op1 = app.add_option("--op", x);
op1->set_default_str("12");
op1->set_type_name("BIGGLES");
EXPECT_EQ(x, 1);
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("=12"));
EXPECT_THAT(help, HasSubstr("BIGGLES"));
op1->set_default_val("14");
EXPECT_EQ(x, 14);
help = app.help();
EXPECT_THAT(help, HasSubstr("=14"));
}
TEST(THelp, Subcom) {
CLI::App app{"My prog"};
auto sub1 = app.add_subcommand("sub1");
app.add_subcommand("sub2");
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("Usage: program [OPTIONS] [SUBCOMMAND]"));
app.require_subcommand();
help = app.help();
EXPECT_THAT(help, HasSubstr("Usage: program [OPTIONS] SUBCOMMAND"));
help = sub1->help();
EXPECT_THAT(help, HasSubstr("Usage: sub1"));
char x[] = "./myprogram";
char y[] = "sub2";
std::vector<char *> args = {x, y};
app.parse((int)args.size(), args.data());
help = app.help();
EXPECT_THAT(help, HasSubstr("Usage: ./myprogram sub2"));
}
TEST(THelp, IntDefaults) {
CLI::App app{"My prog"};
int one{1}, two{2};
app.add_option("--one", one, "Help for one", true);
app.add_set("--set", two, {2, 3, 4}, "Help for set", true);
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("--one"));
EXPECT_THAT(help, HasSubstr("--set"));
EXPECT_THAT(help, HasSubstr("1"));
EXPECT_THAT(help, HasSubstr("=2"));
EXPECT_THAT(help, HasSubstr("2,3,4"));
}
TEST(THelp, SetLower) {
CLI::App app{"My prog"};
std::string def{"One"};
app.add_set_ignore_case("--set", def, {"oNe", "twO", "THREE"}, "Help for set", true);
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("--set"));
EXPECT_THAT(help, HasSubstr("=One"));
EXPECT_THAT(help, HasSubstr("oNe"));
EXPECT_THAT(help, HasSubstr("twO"));
EXPECT_THAT(help, HasSubstr("THREE"));
}
TEST(THelp, OnlyOneHelp) {
CLI::App app{"My prog"};
// It is not supported to have more than one help flag, last one wins
app.set_help_flag("--help", "No short name allowed");
app.set_help_flag("--yelp", "Alias for help");
std::vector<std::string> input{"--help"};
EXPECT_THROW(app.parse(input), CLI::ExtrasError);
}
TEST(THelp, RemoveHelp) {
CLI::App app{"My prog"};
app.set_help_flag();
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("My prog"));
EXPECT_THAT(help, Not(HasSubstr("-h,--help")));
EXPECT_THAT(help, Not(HasSubstr("Options:")));
EXPECT_THAT(help, HasSubstr("Usage:"));
std::vector<std::string> input{"--help"};
try {
app.parse(input);
} catch(const CLI::ParseError &e) {
EXPECT_EQ(static_cast<int>(CLI::ExitCodes::Extras), e.get_exit_code());
}
}
TEST(THelp, NoHelp) {
CLI::App app{"My prog"};
app.set_help_flag();
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("My prog"));
EXPECT_THAT(help, Not(HasSubstr("-h,--help")));
EXPECT_THAT(help, Not(HasSubstr("Options:")));
EXPECT_THAT(help, HasSubstr("Usage:"));
std::vector<std::string> input{"--help"};
try {
app.parse(input);
} catch(const CLI::ParseError &e) {
EXPECT_EQ(static_cast<int>(CLI::ExitCodes::Extras), e.get_exit_code());
}
}
TEST(THelp, CustomHelp) {
CLI::App app{"My prog"};
CLI::Option *help_option = app.set_help_flag("--yelp", "display help and exit");
EXPECT_EQ(app.get_help_ptr(), help_option);
std::string help = app.help();
EXPECT_THAT(help, HasSubstr("My prog"));
EXPECT_THAT(help, Not(HasSubstr("-h,--help")));
EXPECT_THAT(help, HasSubstr("--yelp"));
EXPECT_THAT(help, HasSubstr("Options:"));
EXPECT_THAT(help, HasSubstr("Usage:"));
std::vector<std::string> input{"--yelp"};
try {
app.parse(input);
} catch(const CLI::CallForHelp &e) {
EXPECT_EQ(static_cast<int>(CLI::ExitCodes::Success), e.get_exit_code());
}
}
TEST(Exit, ErrorWithHelp) {
CLI::App app{"My prog"};
std::vector<std::string> input{"-h"};
try {
app.parse(input);
} catch(const CLI::CallForHelp &e) {
EXPECT_EQ(static_cast<int>(CLI::ExitCodes::Success), e.get_exit_code());
}
}
TEST(Exit, ErrorWithoutHelp) {
CLI::App app{"My prog"};
std::vector<std::string> input{"--none"};
try {
app.parse(input);
} catch(const CLI::ParseError &e) {
EXPECT_EQ(static_cast<int>(CLI::ExitCodes::Extras), e.get_exit_code());
}
}
TEST(Exit, ExitCodes) {
CLI::App app;
auto i = static_cast<int>(CLI::ExitCodes::Extras);
EXPECT_EQ(0, app.exit(CLI::Success()));
EXPECT_EQ(0, app.exit(CLI::CallForHelp()));
EXPECT_EQ(i, app.exit(CLI::ExtrasError("Thing")));
EXPECT_EQ(42, app.exit(CLI::RuntimeError(42)));
EXPECT_EQ(1, app.exit(CLI::RuntimeError())); // Not sure if a default here is a good thing
}