msado15: Improve _Connection_Open/Close stubs.

dlls/msado15/connection.c

@@ -221,8 +221,14 @@ static HRESULT WINAPI connection_get_Version( _Connection *iface, BSTR *str )
 
 static HRESULT WINAPI connection_Close( _Connection *iface )
 {
-    FIXME( "%p\n", iface );
-    return E_NOTIMPL;
+    struct connection *connection = impl_from_Connection( iface );
+
+    TRACE( "%p\n", connection );
+
+    if (connection->state == adStateClosed) return MAKE_ADO_HRESULT( adErrObjectClosed );
+
+    connection->state = adStateClosed;
+    return S_OK;
 }
 
 static HRESULT WINAPI connection_Execute( _Connection *iface, BSTR command, VARIANT *records_affected,
@@ -253,9 +259,14 @@ static HRESULT WINAPI connection_RollbackTrans( _Connection *iface )
 static HRESULT WINAPI connection_Open( _Connection *iface, BSTR connect_str, BSTR userid, BSTR password,
                                        LONG options )
 {
+    struct connection *connection = impl_from_Connection( iface );
     FIXME( "%p, %s, %s, %p, %08x\n", iface, debugstr_w(connect_str), debugstr_w(userid),
            password, options );
-    return E_NOTIMPL;
+
+    if (connection->state == adStateOpen) return MAKE_ADO_HRESULT( adErrObjectOpen );
+
+    connection->state = adStateOpen;
+    return S_OK;
 }
 
 static HRESULT WINAPI connection_get_Errors( _Connection *iface, Errors **obj )

dlls/msado15/tests/msado15.c

@@ -674,7 +674,7 @@ static void test_Connection(void)
     ISupportErrorInfo *errorinfo;
     IConnectionPointContainer *pointcontainer;
     LONG state, timeout;
-    BSTR str, str2;
+    BSTR str, str2, str3;
 
     hr = CoCreateInstance(&CLSID_Connection, NULL, CLSCTX_INPROC_SERVER, &IID__Connection, (void**)&connection);
     ok( hr == S_OK, "got %08x\n", hr );
@@ -702,6 +702,9 @@ if (0)   /* Crashes on windows */
     ok(hr == S_OK, "Failed to get state, hr 0x%08x\n", hr);
     ok(state == adStateClosed, "Unexpected state value 0x%08x\n", state);
 
+    hr = _Connection_Close(connection);
+    ok(hr == MAKE_ADO_HRESULT(adErrObjectClosed), "got %08x\n", hr);
+
     timeout = 0;
     hr = _Connection_get_CommandTimeout(connection, &timeout);
     ok(hr == S_OK, "Failed to get state, hr 0x%08x\n", hr);
@@ -734,8 +737,30 @@ if (0) /* Crashes on windows */
     hr = _Connection_get_ConnectionString(connection, &str2);
     ok(hr == S_OK, "Failed, hr 0x%08x\n", hr);
     ok(!wcscmp(str, str2), "wrong string %s\n", wine_dbgstr_w(str2));
+
+    hr = _Connection_Open(connection, NULL, NULL, NULL, 0);
+    todo_wine ok(hr == E_FAIL, "Failed, hr 0x%08x\n", hr);
+
+    /* Open adds trailing ; if it's missing */
+    str3 = SysAllocString(L"Provider=MSDASQL.1;Persist Security Info=False;Data Source=wine_test;");
+    hr = _Connection_Open(connection, NULL, NULL, NULL, adConnectUnspecified);
+    todo_wine ok(hr == E_FAIL, "Failed, hr 0x%08x\n", hr);
+
+    str2 = NULL;
+    hr = _Connection_get_ConnectionString(connection, &str2);
+    ok(hr == S_OK, "Failed, hr 0x%08x\n", hr);
+    todo_wine ok(!wcscmp(str3, str2) || broken(!wcscmp(str, str2)) /* XP */, "wrong string %s\n", wine_dbgstr_w(str2));
+
+    hr = _Connection_Open(connection, str, NULL, NULL, adConnectUnspecified);
+    todo_wine ok(hr == E_FAIL, "Failed, hr 0x%08x\n", hr);
     SysFreeString(str);
+
+    str2 = NULL;
+    hr = _Connection_get_ConnectionString(connection, &str2);
+    ok(hr == S_OK, "Failed, hr 0x%08x\n", hr);
+    todo_wine ok(!wcscmp(str3, str2) || broken(!wcscmp(str, str2)) /* XP */, "wrong string %s\n", wine_dbgstr_w(str2));
     SysFreeString(str2);
+    SysFreeString(str3);
 
     hr = _Connection_put_ConnectionString(connection, NULL);
     ok(hr == S_OK, "Failed, hr 0x%08x\n", hr);

include/msado15_backcompat.idl

@@ -512,6 +512,12 @@ typedef [uuid(00000531-0000-0010-8000-00aa006d2ea4)] enum EventReasonEnum
     adRsnMoveLast = 15
 } EventReasonEnum;
 
+typedef [uuid(00000541-0000-0010-8000-00aa006d2ea4)] enum ConnectOptionEnum
+{
+    adConnectUnspecified = -1,
+    adAsyncConnect = 0x10
+} ConnectOptionEnum;
+
 [
     uuid(00000503-0000-0010-8000-00aa006d2ea4),
     odl,