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test-strings.cpp
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210 lines (162 loc) · 4.84 KB
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#include <cstring>
#include "cpp11/sexp.hpp"
#include "cpp11/strings.hpp"
#include <testthat.h>
context("strings-C++") {
test_that("strings.push_back()") {
cpp11::writable::strings x;
x.push_back("a");
x.push_back("b");
expect_true(x.size() == 2);
expect_true(x[0] == "a");
expect_true(x[1] == "b");
}
test_that("strings.resize()") {
cpp11::writable::strings x;
x.resize(2);
x[0] = "a";
x[1] = "b";
expect_true(x.size() == 2);
expect_true(x[0] == "a");
expect_true(x[1] == "b");
}
test_that("strings.at()") {
cpp11::writable::strings x;
expect_error(x.at(-1));
expect_error(x.at(0));
x.push_back("a");
auto test = x.at(0);
expect_true(test == "a");
expect_error(x.at(1));
}
test_that("strings.pop_back()") {
cpp11::writable::strings x;
x.push_back("a");
x.push_back("b");
x.pop_back();
expect_true(x.size() == 1);
expect_true(x[0] == "a");
expect_error(x.at(1));
}
test_that("strings.insert()") {
cpp11::writable::strings x;
x.insert(0, "a");
x.insert(0, "b");
x.insert(1, "c");
expect_true(x.size() == 3);
expect_true(x[0] == "b");
expect_true(x[1] == "c");
expect_true(x[2] == "a");
}
test_that("strings.erase()") {
cpp11::writable::strings x;
x.push_back("a");
x.push_back("b");
x.push_back("c");
x.push_back("d");
x.push_back("e");
expect_true(x.size() == 5);
x.erase(0);
expect_true(x.size() == 4);
expect_true(x[0] == "b");
expect_true(x[1] == "c");
expect_true(x[2] == "d");
expect_true(x[3] == "e");
x.erase(2);
expect_true(x.size() == 3);
expect_true(x[0] == "b");
expect_true(x[1] == "c");
expect_true(x[2] == "e");
}
test_that("strings.iterator* = ") {
cpp11::writable::strings x;
x.push_back("a");
x.push_back("b");
x.push_back("c");
auto it = x.begin() + 1;
*it = "d";
++it;
*it = "e";
expect_true(x.size() == 3);
expect_true(x[0] == "a");
expect_true(x[1] == "d");
expect_true(x[2] == "e");
}
test_that("writable::strings(SEXP)") {
SEXP x = PROTECT(Rf_allocVector(STRSXP, 5));
SET_STRING_ELT(x, 0, Rf_mkCharCE("a", CE_UTF8));
SET_STRING_ELT(x, 1, Rf_mkCharCE("b", CE_UTF8));
SET_STRING_ELT(x, 2, Rf_mkCharCE("c", CE_UTF8));
SET_STRING_ELT(x, 3, Rf_mkCharCE("d", CE_UTF8));
SET_STRING_ELT(x, 4, Rf_mkCharCE("e", CE_UTF8));
cpp11::writable::strings y(x);
y[0] = "foo";
expect_true(x != y.data());
expect_true(std::string(CHAR(STRING_ELT(x, 0))) == "a");
expect_true(y[0] == "foo");
cpp11::writable::strings z(y);
z[0] = "bar";
expect_true(z.data() != y.data());
expect_true(std::string(CHAR(STRING_ELT(x, 0))) == "a");
expect_true(y[0] == "foo");
expect_true(z[0] == "bar");
UNPROTECT(1);
}
test_that("std::initializer_list<const char*>") {
cpp11::writable::strings x{"foo"};
expect_true(x.size() == 1);
expect_true(x[0] == "foo");
}
test_that("std::initializer_list<std::string>") {
std::string str("foo");
cpp11::writable::strings x{str};
expect_true(x.size() == 1);
expect_true(x[0] == "foo");
}
test_that("NA_STRING constructor") {
cpp11::writable::strings x({NA_STRING});
expect_true(x.size() == 1);
expect_true(x[0] == NA_STRING);
cpp11::writable::strings y({NA_STRING, "foo"});
expect_true(y.size() == 2);
expect_true(y[0] == NA_STRING);
expect_true(y[1] == "foo");
}
test_that("CHARSXP move constructor") {
SEXP x = PROTECT(Rf_mkChar("foo"));
cpp11::writable::strings y(std::move(x));
expect_true(y.size() == 1);
expect_true(y[0] == "foo");
UNPROTECT(1);
}
// test_that("strings::operator=() and strings::at() do not compile") {
// cpp11::strings x(Rf_mkChar("foo"));
// x[0] = "bar";
// x.at(0) = "bar";
//}
test_that("strings::operator=() and strings::at() do compile") {
cpp11::writable::strings x(Rf_mkChar("foo"));
x[0] = "bar";
x.at(0) = "bar";
}
test_that("strings::operator=() works with std:strings") {
cpp11::writable::strings x(Rf_mkChar("foo"));
std::string y("bar");
x[0] = y;
expect_true(x[0] == y);
}
test_that("conversion to SEXP with missing values") {
cpp11::sexp x1 = cpp11::r_string(NA_STRING);
expect_true(static_cast<SEXP>(x1) == NA_STRING);
cpp11::sexp x2 = cpp11::writable::strings(NA_STRING);
expect_true(Rf_xlength(x2) == 1);
expect_true(STRING_ELT(x2, 0) == NA_STRING);
cpp11::sexp x3 = cpp11::writable::strings({NA_STRING});
expect_true(Rf_xlength(x3) == 1);
expect_true(STRING_ELT(x3, 0) == NA_STRING);
cpp11::sexp x4 = cpp11::writable::strings({NA_STRING, "text"});
expect_true(Rf_xlength(x4) == 2);
expect_true(STRING_ELT(x4, 0) == NA_STRING);
expect_true(strcmp(CHAR(STRING_ELT(x4, 1)), "text") == 0);
}
}