test/tokenizer/Test.cpp

/*
 * Copyright (c) 2015, Intel Corporation
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
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 * may be used to endorse or promote products derived from this software without
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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#include "Tokenizer.h"

#define CATCH_CONFIG_MAIN // This tells Catch to provide a main()
#include <catch.hpp>

#include <string>
#include <vector>

using std::string;
using std::vector;

using Expected = vector<string>;

SCENARIO("Tokenizer tests")
{
    GIVEN ("A default tokenizer") {

        GIVEN ("A trivial string") {
            Tokenizer tokenizer("a bcd ef");
            Expected expected{"a", "bcd", "ef"};

            THEN ("split() api should work") {
                CHECK(tokenizer.split() == expected);
            }
        }

        GIVEN ("An empty string") {
            Tokenizer tokenizer("");
            Expected expected{};

            THEN ("split() should be empty") {
                CHECK(tokenizer.split() == expected);
            }
        }

        GIVEN ("Multiple separators in a row") {
            Tokenizer tokenizer("  a \n\t bc  ");
            Expected expected{"a", "bc"};

            THEN ("split() api should work") {
                CHECK(tokenizer.split() == expected);
            }
        }
    }

    GIVEN ("A slash-separated string and tokenizer") {
        Tokenizer tokenizer("/a/bcd/ef g/h/", "/");
        Expected expected{"a", "bcd", "ef g", "h"};

        THEN ("split() api should work") {
            CHECK(tokenizer.split() == expected);
        }
    }

    GIVEN ("A tokenizer that doesn't merge consecutive separators") {

        GIVEN ("An empty string") {
            Tokenizer tokenizer("", Tokenizer::defaultDelimiters, false);
            Expected expected{};

            THEN ("split() should be empty") {
                CHECK(tokenizer.split() == expected);
            }
        }

        GIVEN ("A string consisting only of a delimiter") {
            Tokenizer tokenizer(",", ",", false);
            Expected expected{"", ""};

            THEN ("split() should return two empty tokens") {
                CHECK(tokenizer.split() == expected);
            }
        }

        GIVEN ("Multiple separators in a row") {
            Tokenizer tokenizer(" a  b \nc d ", Tokenizer::defaultDelimiters, false);
            Expected expected{"", "a", "", "b", "", "c", "d", ""};

            THEN ("split() api should work") {
                CHECK(tokenizer.split() == expected);
            }
        }
    }
}