2 files changed, 46 insertions, 0 deletions
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 9c65abd..e5142b6 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -53,3 +53,4 @@ add_qtmaildir_test(messageview)
 add_qtmaildir_test(querycompleter)
 add_qtmaildir_test(tagdialog)
 add_qtmaildir_test(tagrules)
+add_qtmaildir_test(rulequery)
diff --git a/tests/test_rulequery.cpp b/tests/test_rulequery.cpp
new file mode 100644
index 0000000..3e49eac
--- /dev/null
+++ b/tests/test_rulequery.cpp
@@ -0,0 +1,45 @@
+/*
+ * qtmaildir - a Qt6 mail client for notmuch-indexed Maildirs
+ * Copyright (C) 2026 Danilo M. <danix@danix.xyz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <QtTest>
+
+#include "rulequery.h"
+
+/// RuleQuery is a view over a string the notmuch post-new hook executes, so
+/// the risk is a query that compiles to something subtly wider than the rows
+/// say. These tests are about exact strings, not about whether notmuch would
+/// accept the result: notmuch accepts almost anything, including `from:((((`.
+class TestRuleQuery : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void aSingleContainsTermCompiles();
+};
+
+void TestRuleQuery::aSingleContainsTermCompiles()
+{
+    RuleQuery q;
+    q.terms.append({RuleTerm::From, RuleTerm::Contains,
+                    QStringLiteral("sender@example.org")});
+
+    QCOMPARE(q.compile(), QStringLiteral("from:sender@example.org"));
+}
+
+QTEST_MAIN(TestRuleQuery)
+#include "test_rulequery.moc"