add a test for get_monsters().

I want to make sure I don't break this in the future.

res/eressea/strings.xml

@@ -223,7 +223,7 @@
     </string>
     <string name="seashell">
       <text locale="en">This badge pronounces its wearer an official visitor to the
-         region of Muschelplateau.</text>
+         embassies of Muschelplateau.</text>
       <text locale="de">Dieses Abzeichen identifiziert die Partei seines Trägers offiziell
         als einen Besucher der Botschafterregion 'Muschelplateau'.</text>
     </string>

src/kernel/CMakeLists.txt

@@ -3,6 +3,7 @@ project(kernel C)
 SET(_TEST_FILES
 build.test.c
 config.test.c
+faction.test.c
 save.test.c
 ship.test.c
 spell.test.c

src/kernel/faction.test.c

@@ -0,0 +1,27 @@
+#include <platform.h>
+#include <kernel/types.h>
+#include <kernel/config.h>
+#include "faction.h"
+#include <CuTest.h>
+#include <stdio.h>
+
+void test_get_monsters(CuTest *tc) {
+    faction *f;
+    CuAssertPtrEquals(tc, NULL, get_monsters());
+    f = get_or_create_monsters();
+    CuAssertPtrEquals(tc, f, get_monsters());
+    CuAssertIntEquals(tc, 666, f->no);
+    CuAssertStrEquals(tc, "Monster", f->name);
+    free_gamedata();
+    CuAssertPtrEquals(tc, NULL, get_monsters());
+    f = get_or_create_monsters();
+    CuAssertPtrEquals(tc, f, get_monsters());
+    CuAssertIntEquals(tc, 666, f->no);
+}
+
+CuSuite *get_faction_suite(void)
+{
+    CuSuite *suite = CuSuiteNew();
+    SUITE_ADD_TEST(suite, test_get_monsters);
+    return suite;
+}

src/test_eressea.c

@@ -34,6 +34,7 @@ int RunAllTests(void)
   ADD_TESTS(suite, functions);
   ADD_TESTS(suite, umlaut);
   /* kernel */
+  ADD_TESTS(suite, faction);
   ADD_TESTS(suite, build);
   ADD_TESTS(suite, pool);
   ADD_TESTS(suite, curse);