libcruft-util/test/cmdopt.cpp

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#include "cmdopt.hpp"
#include "debug.hpp"
#include "tap.hpp"
#include "types.hpp"
#include "maths.hpp"
#include <array>
///////////////////////////////////////////////////////////////////////////////
// Check that null options don't strhrow anything
static
void
test_null (cruft::TAP::logger &tap)
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{
cruft::cmdopt::parser p;
p.add<cruft::cmdopt::option::null> ('n', "null", "testing null option");
static const char *argv1[] = { "./foo", "-n", "foo" };
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tap.expect_nothrow ([&] () {
p.scan (std::size (argv1), argv1);
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}, "nothrow null short form");
static const char *argv2[] = { "./foo", "--null", "foo" };
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tap.expect_nothrow ([&] () {
p.scan (std::size (argv2), argv2);
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}, "nothrow null long form");
}
///////////////////////////////////////////////////////////////////////////////
// Check if presence options can be used successfully
static
void
test_present (cruft::TAP::logger &tap)
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{
cruft::cmdopt::parser p;
bool is_present;
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p.add<cruft::cmdopt::option::present> ('p', "present", "option is present", is_present);
// Short option form
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{
static const char *argv1[] = { "./foo", "-p" };
is_present = false;
p.scan (std::size (argv1), argv1);
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tap.expect (is_present, "presence short form");
}
// Long option form
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{
static const char *argv2[] = { "./foo", "--present" };
is_present = false;
p.scan (std::size (argv2), argv2);
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tap.expect (is_present, "presence long form");
}
// Check that value is reset from true if not present
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{
static const char *argv3[] = { "./foo" };
is_present = true;
p.scan (std::size (argv3), argv3);
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tap.expect (!is_present, "presence null");
}
}
///////////////////////////////////////////////////////////////////////////////
// Check all forms of boolean inputs
static
void
test_bool (cruft::TAP::logger &tap)
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{
cruft::cmdopt::parser p;
bool value = false;
p.add<cruft::cmdopt::option::value<bool>> ('b', "bool", "testing boolean actions", value);
// List all legal forms of positive or negative boolean values
std::array<const char*, 3> argv { "./foo", "-b", NULL };
static const char *positive[] = { "1", "true", "yes" };
static const char *negative[] = { "0", "false", "no" };
// For each boolean value, ensure that it returns as expected
for (auto i: positive) {
argv[2] = i;
p.scan (argv.size (), argv.data ());
tap.expect_eq (value, true, "read bool, %s", i);
}
for (auto i: negative) {
argv[2] = i;
p.scan (argv.size (), argv.data ());
tap.expect_eq (value, false, "read bool, %s", i);
}
// Check that invalid forms of boolean all throw exceptions
const char* invalid[] = { "foo", "null" };
for (auto i: invalid) {
argv[2] = i;
tap.expect_throw<cruft::cmdopt::invalid_value> ([&] () {
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p.scan (argv.size (), argv.data ());
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}, "invalid bool, %s", i);
}
}
///////////////////////////////////////////////////////////////////////////////
template<typename T>
static
void
test_numeric (cruft::TAP::logger &tap)
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{
cruft::cmdopt::parser p;
T value;
p.add<cruft::cmdopt::option::value<T>> ('t', "type", "testing type option", value);
T values[] = {
// TODO: Enable minimum value testing. Currently disabled as
// a negative numerical value looks just like a proceeding
// option.
//std::numeric_limits<T>::min(),
std::numeric_limits<T>::max (),
0
};
const char *argv_short[] = { "./foo", "-t", NULL };
const char * argv_long[] = { "./foo", NULL };
for(size_t i = 0; i < std::size (values); ++i) {
std::ostringstream out_short, out_long;
std::string str_short, str_long;
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// construct short form arguments
out_short << values[i];
str_short = out_short.str ();
argv_short[2] = str_short.c_str ();
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// check short form reading
value = 2;
p.scan (std::size (argv_short), argv_short);
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tap.expect_eq (value, values[i], "equality, short form");
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// construct long form arguments
out_long << "--type=" << values[i];
str_long = out_long.str ();
argv_long[1] = str_long.c_str ();
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// check long form reading
value = 2;
p.scan (std::size (argv_long), argv_long);
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tap.expect_eq (value, values[i], "equality, long form");
}
}
///////////////////////////////////////////////////////////////////////////////
static
void
test_bytes (cruft::TAP::logger &tap)
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{
cruft::cmdopt::parser p;
size_t size;
p.add<cruft::cmdopt::option::bytes> ('b', "bytes", "testing bytes", size);
static const struct {
const char *str;
size_t val;
} commands[] = {
{ "1", 1 },
{ "1k", cruft::pow (1024u, 1u) },
{ "1M", cruft::pow (1024u, 2u) },
{ "1G", cruft::pow (1024u, 3u) }
};
const char *argv[] = {
"./foo",
"-b",
NULL
};
for (auto &i: commands) {
argv[2] = i.str;
p.scan (std::size (argv), argv);
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tap.expect_eq (i.val, size, "bytes, %s", i.str);
};
}
///////////////////////////////////////////////////////////////////////////////
static
void
test_required (cruft::TAP::logger &tap)
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{
cruft::cmdopt::parser p;
p.add<cruft::cmdopt::option::null> (
'n',
"null",
"null testing"
).required (true);
static const char *argv[] = {
"./cpptest",
"-n",
"value"
};
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tap.expect_nothrow ([&] () {
p.scan (std::size (argv), argv);
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}, "required option, success");
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tap.expect_throw<cruft::cmdopt::invalid_required> ([&] () {
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p.scan (1, argv);
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}, "required option, failure");
}
///////////////////////////////////////////////////////////////////////////////
static
void
test_positional (cruft::TAP::logger &tap)
{
unsigned value = 0xdead;
constexpr unsigned expected = 0xbeef;
cruft::cmdopt::parser p;
p.append<cruft::cmdopt::option::value<unsigned>> ("unsigned test", value);
static const char *argv[] = {
"./cpptest",
"--",
"48879",
};
tap.expect_nothrow ([&] {
p.scan (std::size (argv), argv);
}, "positional, nothrow");
tap.expect_eq (value, expected, "positiona, value success");
}
///////////////////////////////////////////////////////////////////////////////
int
main (int, char **) {
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return cruft::TAP::logger::run ([] (auto &tap) {
test_null (tap);
test_present (tap);
test_bool (tap);
test_numeric< int16_t> (tap);
test_numeric< int32_t> (tap);
test_numeric< int64_t> (tap);
test_numeric<uint16_t> (tap);
test_numeric<uint32_t> (tap);
test_numeric<uint64_t> (tap);
test_bytes (tap);
test_required (tap);
test_positional (tap);
});
}