Added tests for string_to_timepoint and parse_options: -h/-V/-t.

tests/test_parse_options.cpp

@@ -0,0 +1,165 @@
+/*  This file is part of remwharead.
+ *  Copyright © 2019 tastytea <tastytea@tastytea.de>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <exception>
+#include <string>
+#include <chrono>
+#include <vector>
+#include <catch.hpp>
+#include "parse_options.hpp"
+
+using std::string;
+using std::chrono::system_clock;
+using std::chrono::seconds;
+using std::vector;
+
+SCENARIO ("The time conversion works correctly")
+{
+    bool exception = false;
+    const string datetime = "1970-01-04T00:00:00";
+    system_clock::time_point tp;
+    seconds seconds_since_epoch;
+
+    GIVEN ("The date and time " + datetime)
+    {
+        try
+        {
+            tp = string_to_timepoint(datetime);
+            seconds_since_epoch = std::chrono::duration_cast<seconds>
+                (tp.time_since_epoch());
+        }
+        catch (const std::exception &e)
+        {
+            exception = true;
+        }
+
+        THEN ("No exception is thrown")
+            AND_THEN ("Seconds since epoch is not 0")
+        {
+            REQUIRE_FALSE(exception);
+            REQUIRE(seconds_since_epoch != seconds(0));
+        }
+    }
+}
+
+SCENARIO ("The option parser works correctly")
+{
+    bool exception = false;
+    options opts;
+
+    WHEN ("The options are --help --file test")
+    {
+        try
+        {
+            const char *argv[]
+                = { "remwharead", "--help", "--file", "test" };
+            opts = parse_options(4, argv);
+        }
+        catch (const std::exception &e)
+        {
+            exception = true;
+        }
+
+        THEN ("No exception is thrown")
+            AND_THEN ("status code is 0")
+            AND_THEN ("options.file is empty")
+        {
+            REQUIRE_FALSE(exception);
+            REQUIRE(opts.status_code == 0);
+            REQUIRE(opts.file == "");
+        }
+    }
+
+    WHEN ("The options are --version --file test")
+    {
+        try
+        {
+            const char *argv[]
+                = { "remwharead", "--version", "--file", "test" };
+            opts = parse_options(4, argv);
+        }
+        catch (const std::exception &e)
+        {
+            exception = true;
+        }
+
+        THEN ("No exception is thrown")
+            AND_THEN ("status code is 0")
+            AND_THEN ("options.file is empty")
+        {
+            REQUIRE_FALSE(exception);
+            REQUIRE(opts.status_code == 0);
+            REQUIRE(opts.file == "");
+        }
+    }
+
+    WHEN ("The options are -t 💩")
+    {
+        try
+        {
+            const char *argv[]
+                = { "remwharead", "-t", "💩" };
+            opts = parse_options(3, argv);
+        }
+        catch (const std::exception &e)
+        {
+            exception = true;
+        }
+
+        THEN ("No exception is thrown")
+            AND_THEN ("status code is 0")
+            AND_THEN ("options.file is empty")
+        {
+            REQUIRE_FALSE(exception);
+            REQUIRE(opts.status_code == 0);
+            REQUIRE(opts.tags == vector<string>{ "💩" });
+        }
+    }
+
+    WHEN ("A very long string is passed as a tag")
+    {
+        const string longstring = // 5 · 60 = 300
+            "aw6hui6chieRo9aihai9un1aeke6oushoo2oRo4aeD6eiDeiSheek4ahGiel"
+            "othaemeeyo4ievieV8kae9xiriejohD0aelah6oophaQueilohyaix3joo7O"
+            "laiceeFePuetaeBe0aip3eemuaheer0aj8aij8ahchisi4eiperiechoopoo"
+            "ohmie5doog5ohbahDoodah7daurah6haebeife2tah5Pheeweeb0eishooc4"
+            "phohKu5Ha3HiCeedeoph1ocaingaHeedeepeesohmee6Equ4meirahk3aihe";
+        const string tags = "tag1," + longstring + ",tag3";
+        try
+        {
+            const char *argv[] =
+                {
+                    "remwharead",
+                    "-t",
+                    tags.c_str()
+                };
+            opts = parse_options(3, argv);
+        }
+        catch (const std::exception &e)
+        {
+            exception = true;
+        }
+
+        THEN ("No exception is thrown")
+            AND_THEN ("status code is 0")
+            AND_THEN ("options.file is empty")
+        {
+            REQUIRE_FALSE(exception);
+            REQUIRE(opts.status_code == 0);
+            REQUIRE(opts.tags == vector<string>{ "tag1", longstring, "tag3" });
+        }
+    }
+}