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Add a method to remove the implicit value of an option (#178)

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This commit is contained in:
Jean-Baptiste Bayle 2019-06-18 09:49:15 +02:00 committed by jarro2783
parent 4f3fda4bf9
commit 6b6af4f561
2 changed files with 71 additions and 0 deletions
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10
include/cxxopts.hpp
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@ -314,6 +314,9 @@ namespace cxxopts
virtual std::shared_ptr<Value>
implicit_value(const std::string& value) = 0;
virtual std::shared_ptr<Value>
no_implicit_value() = 0;
virtual bool
is_boolean() const = 0;
};
@ -834,6 +837,13 @@ namespace cxxopts
return shared_from_this();
}
std::shared_ptr<Value>
no_implicit_value()
{
m_implicit = false;
return shared_from_this();
}
std::string
get_default_value() const
{

61
test/options.cpp
View File

@ -250,6 +250,67 @@ TEST_CASE("Empty with implicit value", "[implicit]")
REQUIRE(result["implicit"].as<std::string>() == "");
}
TEST_CASE("Boolean without implicit value", "[implicit]")
{
cxxopts::Options options("no_implicit", "bool without an implicit value");
options.add_options()
("bool", "Boolean without implicit", cxxopts::value<bool>()
->no_implicit_value());
SECTION("When no value provided") {
Argv av({"no_implicit", "--bool"});
char** argv = av.argv();
auto argc = av.argc();
CHECK_THROWS_AS(options.parse(argc, argv), cxxopts::missing_argument_exception&);
}
SECTION("With equal-separated true") {
Argv av({"no_implicit", "--bool=true"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(result.count("bool") == 1);
CHECK(result["bool"].as<bool>() == true);
}
SECTION("With equal-separated false") {
Argv av({"no_implicit", "--bool=false"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(result.count("bool") == 1);
CHECK(result["bool"].as<bool>() == false);
}
SECTION("With space-separated true") {
Argv av({"no_implicit", "--bool", "true"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(result.count("bool") == 1);
CHECK(result["bool"].as<bool>() == true);
}
SECTION("With space-separated false") {
Argv av({"no_implicit", "--bool", "false"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(result.count("bool") == 1);
CHECK(result["bool"].as<bool>() == false);
}
}
TEST_CASE("Default values", "[default]")
{
cxxopts::Options options("defaults", "has defaults");