test: add valid tests

tests/ut/toml.d

@@ -103,6 +103,7 @@ unittest {
    doc["bare-key"].should == "value";
    doc["1234"].should == "value";
 }
+
 @("quoted keys")
 @safe
 unittest {

tests/ut/valid.d

@@ -0,0 +1,24 @@
+module ut.valid;
+
+import unit_threaded;
+import toml;
+
+
+@("issue5")
+@ShouldFail("to be fixed: see https://github.com/dlang-community/toml/issues/5")
+@safe
+unittest {
+   enum T =`
+      [[override]]
+      a = 30
+
+      [override.symbols]
+      "S.f" = 30
+
+      [[override]]
+      a = 40
+
+      [override.symbols]
+      "S.f" = 25 `;
+   TOMLDocument doc = parseTOML(T);
+}

tests/ut_main.d

@@ -4,6 +4,7 @@ int main(string[] args) {
     return runTests!(
           "ut.toml",
           "ut.invalid",
+          "ut.valid",
           "toml.serialize",
           "toml.toml",
           )(args);