Added tests for Easy::Filter.

README.adoc

@@ -401,7 +401,7 @@ strings and you can use unsupported fields in an `Entity` by converting it to
 * [x] Context
 * [ ] Conversation
 * [x] Emoji
-* [ ] Filter
+* [x] Filter
 * [ ] Instance
 * [ ] List
 * [ ] Mention

tests/entities/test_filter.cpp

@@ -0,0 +1,96 @@
+/*  This file is part of mastodon-cpp.
+ *  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 <catch.hpp>
+#include "easy/entities/filter.hpp"
+#include "easy/easy.hpp"
+
+using std::string;
+using std::chrono::system_clock;
+
+using namespace Mastodon;
+
+SCENARIO ("Easy::Filter works as intended", "[entity]")
+{
+    GIVEN ("An Easy::Filter object")
+    {
+        Easy::Filter filter;
+        bool exception = false;
+
+        WHEN ("It is initialized with valid filter data")
+        {
+            const string data =
+                "{\"whole_word\":false,"
+                "\"phrase\":\"nöööö!\","
+                "\"irreversible\":null,"
+                "\"id\":\"2\","
+                "\"expires_at\":null,"
+                "\"context\":[\"public\",\"notifications\"]}";
+
+            try
+            {
+                filter.from_string(data);
+            }
+            catch (const std::exception &e)
+            {
+                exception = true;
+            }
+
+            THEN ("No exception is thrown")
+                AND_THEN ("Filter is valid")
+                AND_THEN ("The attributes are set to the right values")
+            {
+                REQUIRE_FALSE(exception);
+                // REQUIRE(filter.valid()); // Pleroma issue #885.
+                REQUIRE(!filter.whole_word());
+                REQUIRE(filter.phrase() == "nöööö!");
+                REQUIRE(!filter.irreversible());
+                REQUIRE(filter.id() == "2");
+                REQUIRE(filter.expires_at().timepoint
+                        == system_clock::time_point());
+                REQUIRE(filter.context() == std::vector<Easy::context_type>
+                        ({
+                            Easy::context_type::Public,
+                            Easy::context_type::Notifications
+                        }));
+            }
+        }
+
+        WHEN ("It is initialized with an empty string")
+        {
+            try
+            {
+                filter.from_string("");
+            }
+            catch (const std::exception &e)
+            {
+                exception = true;
+            }
+
+            THEN ("No exception is thrown")
+                AND_THEN ("It is not valid")
+                AND_THEN ("shortcode is empty")
+            {
+                REQUIRE_FALSE(exception);
+                REQUIRE_FALSE(filter.valid());
+                REQUIRE(filter.phrase() == "");
+            }
+        }
+    }
+}