tokenize_command_line_gtest.cc

/* -*- mode: C++; c-basic-offset: 4; tab-width: 8; -*-
* vi: set shiftwidth=4 tabstop=8:
* :indentSize=4:tabSize=8:
*/
#include "gtest/gtest.h"
#include "tokenize_command_line.h"

#if defined(_WIN32)
void setenv(const char *key, const char* val, int);
#endif

TEST(tokenize_command_line, handles_empty_string)
{
    int argc;
    char **argv;
    ASSERT_TRUE(tokenize_command_line("", argc, argv));
    ASSERT_EQ(0, argc);
    ASSERT_TRUE(argv != nullptr);
    ASSERT_TRUE(*argv == nullptr);
    tokenize_command_line_free(argv);
}

TEST(tokenize_command_line, handles_one_parameter)
{
    int argc;
    char **argv;
    ASSERT_TRUE(tokenize_command_line("a", argc, argv));
    ASSERT_EQ(1, argc);
    ASSERT_TRUE(argv != nullptr);
    ASSERT_STREQ("a", argv[0]);
    ASSERT_TRUE(argv[1] == nullptr);
    tokenize_command_line_free(argv);
}

TEST(tokenize_command_line, handles_two_parameters)
{
    int argc;
    char **argv;
    ASSERT_TRUE(tokenize_command_line("a b", argc, argv));
    ASSERT_EQ(2, argc);
    ASSERT_STREQ("a", argv[0]);
    ASSERT_STREQ("b", argv[1]);
    ASSERT_TRUE(argv[2] == nullptr);
    tokenize_command_line_free(argv);
}

TEST(tokenize_command_line, handles_tab_as_whitespace)
{
    int argc;
    char **argv;
    ASSERT_TRUE(tokenize_command_line("a\tb", argc, argv));
    ASSERT_EQ(2, argc);
    ASSERT_STREQ("a", argv[0]);
    ASSERT_STREQ("b", argv[1]);
    ASSERT_TRUE(argv[2] == nullptr);
    tokenize_command_line_free(argv);
}

TEST(tokenize_command_line, handles_single_quotes)
{
    int argc;
    char **argv;
    ASSERT_TRUE(tokenize_command_line("'a' 'b c d'", argc, argv));
    ASSERT_EQ(2, argc);
    ASSERT_STREQ("a", argv[0]);
    ASSERT_STREQ("b c d", argv[1]);
    ASSERT_TRUE(argv[2] == nullptr);
    tokenize_command_line_free(argv);
}

TEST(tokenize_command_line, handles_double_quotes)
{
    int argc;
    char **argv;
    ASSERT_TRUE(tokenize_command_line("\"a\" \"b c d\"", argc, argv));
    ASSERT_EQ(2, argc);
    ASSERT_STREQ("a", argv[0]);
    ASSERT_STREQ("b c d", argv[1]);
    ASSERT_TRUE(argv[2] == nullptr);
    tokenize_command_line_free(argv);
}

TEST(tokenize_command_line, variable_substitution1)
{
    setenv("SECOND", "second", 1);
#if defined(_WIN32)
    const char *command_line = "first %SECOND% third";
#else
    const char *command_line = "first $SECOND third";
#endif
    int argc;
    char **argv;
    ASSERT_TRUE(tokenize_command_line(command_line, argc, argv));
    ASSERT_EQ(3, argc);
    ASSERT_STREQ("first",  argv[0]);
    ASSERT_STREQ("second", argv[1]);
    ASSERT_STREQ("third",  argv[2]);
    ASSERT_TRUE(argv[3] == nullptr);
    tokenize_command_line_free(argv);
}

TEST(tokenize_command_line, variable_substitution2)
{
    setenv("SECOND", "2", 1);
#if defined(_WIN32)
    const char *command_line = "eins%SECOND%drei";
#else
    const char *command_line = "eins${SECOND}drei";
#endif
    int argc;
    char **argv;
    ASSERT_TRUE(tokenize_command_line(command_line, argc, argv));
    ASSERT_EQ(1, argc);
    ASSERT_STREQ("eins2drei", argv[0]);
    ASSERT_TRUE(argv[1] == nullptr);
    tokenize_command_line_free(argv);
}

TEST(tokenize_command_line, recursive_variable_substitution)
{
    setenv("d1", "d1", 1);
#if defined(_WIN32)
    setenv("d2", "%d1%", 1);
    const char *command_line = "%d2%";
#else
    setenv("d2", "$d1", 1);
    const char *command_line = "$d2";
#endif
    int argc;
    char **argv;
    ASSERT_TRUE(tokenize_command_line(command_line, argc, argv));
    ASSERT_EQ(1, argc);
#if defined(_WIN32)
    ASSERT_STREQ("%d1%", argv[0]);
#else
    ASSERT_STREQ("$d1", argv[0]);
#endif
    ASSERT_TRUE(argv[1] == nullptr);
    tokenize_command_line_free(argv);
}