diff --git a/source/readconf.d b/source/readconf.d
index ecb71ee..21efba8 100644
--- a/source/readconf.d
+++ b/source/readconf.d
@@ -169,6 +169,11 @@ struct ConfigFile
     private string name = "[]";
     private ConfigSection[string] sections;
 
+    @property bool exist()
+    {
+        return this.sections.length > 0;
+    }
+
     /** 
      * Get the section
      * Params:
@@ -176,6 +181,10 @@ struct ConfigFile
      */
     @property ConfigSection sectionName(string section = "[]")
     {
+        if (!this.exist)
+            throw new Exception("The configuration file does not exist");
+        if (sections.length == 1)
+            return sections[sections.byKey.front];
         return section in sections ? sections[section] : ConfigSection();
     }
 
@@ -219,6 +228,8 @@ struct ConfigSection
      */
     ConfigParameter key(string key)
     {
+        if (this.empty)
+            throw new Exception("The selected section has no parameters or does not exist");
         return key in this.parameters ? this.parameters[key] : ConfigParameter();
     }
 
diff --git a/tests/database.conf b/tests/database.conf
new file mode 100644
index 0000000..a20cdf8
--- /dev/null
+++ b/tests/database.conf
@@ -0,0 +1,5 @@
+[postgres]
+host        => "//myhost"
+port        => 5432
+name        => mydatabase
+password    => "/&#BD&@MXLE"
diff --git a/tests/test.d b/tests/test.d
index ff4bb36..b5390d8 100644
--- a/tests/test.d
+++ b/tests/test.d
@@ -1,23 +1,36 @@
 import readconf;
+import std.conv;
 
 unittest
 {
-    rc.read("./tests/settings.conf");
-    rc.read("./tests/settings.conf", "new");
+    rc.read("./tests/settings.conf", "old");
+    rc.read("./tests/database.conf", "pgconf");
 
-    assert(rc.cf("settings.conf").sn.key("value1") == "text without quotes");
-    assert(rc.cf("settings.conf").sn.key("value2") == "Yes!");
-    assert(rc.cf("settings.conf").sn.key("value3") == "value in apostrophes");
-    assert(rc.cf("settings.conf").sn.key("value4") == "1000");
-    assert(rc.cf("settings.conf").sn.key("value5") == "0.000");
-    assert(rc.cf("settings.conf").sn.key("value7") == "//path");
-    assert(rc.cf("settings.conf").sn.key("value8") == "\"Hey!\"");
-    assert(rc.cf("settings.conf").sn("part2").key("value1") == "this value will be in the new section");
-    assert(rc.cf("settings.conf").sn("part2").key("value3") == "good value!");
-    assert(rc.cf("settings.conf").sn("part3").key("value1") == "-2");
-    assert(rc.cf("settings.conf").sn("part3").key("value3") == "100");
+    assert(rc.cf("old").sn.key("value1") == "text without quotes");
+    assert(rc.cf("old").sn.key("value2") == "Yes!");
+    assert(rc.cf("old").sn.key("value3") == "value in apostrophes");
+    assert(rc.cf("old").sn.key("value4") == "1000");
+    assert(rc.cf("old").sn.key("value5") == "0.000");
+    assert(rc.cf("old").sn.key("value7") == "//path");
+    assert(rc.cf("old").sn.key("value8") == "\"Hey!\"");
+    assert(rc.cf("old").sn("part2").key("value1") == "this value will be in the new section");
+    assert(rc.cf("old").sn("part2").key("value3") == "good value!");
+    assert(rc.cf("old").sn("part3").key("value1") == "-2");
+    assert(rc.cf("old").sn("part3").key("value3") == "100");
 
-    assert(rc.cf("new").sn("part3").key("value3") == "100");
+    auto pgconf = rc.cf("pgconf").sn("postgres");
+
+    assert(pgconf.key("host")        == "//myhost");
+    assert(pgconf.key("port").to!int == 5432);
+    assert(pgconf.key("name")        == "mydatabase");
+    assert(pgconf.key("password")    == "/&#BD&@MXLE");
+
+    auto pgconf2 = rc.cf("pgconf");
+    
+    assert(pgconf2.sn.key("host")        == "//myhost");
+    assert(pgconf2.sn.key("port").to!int == 5432);
+    assert(pgconf2.sn.key("name")        == "mydatabase");
+    assert(pgconf2.sn.key("password")    == "/&#BD&@MXLE");
 }
 
 // void main()