feat: read the business-senders list

1 files changed, 101 insertions, 0 deletions

diff --git a/tests/test_businesssenders.cpp b/tests/test_businesssenders.cpp
new file mode 100644
index 0000000..64a96fa
--- /dev/null
+++ b/tests/test_businesssenders.cpp
@@ -0,0 +1,101 @@
+/*
+ * 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 <QTemporaryDir>
+#include <QTest>
+
+#include "businesssenders.h"
+
+class TestBusinessSenders : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void anExactAddressMatches();
+    void aDomainEntryMatchesEveryAddressUnderIt();
+    void commentsAndBlankLinesAreIgnored();
+    void whitespaceAroundAnEntryIsIgnored();
+    void matchingIsCaseInsensitive();
+    void anAbsentFileMatchesNothing();
+};
+
+void TestBusinessSenders::anExactAddressMatches()
+{
+    const BusinessSenders::List list = BusinessSenders::parse(
+        QStringLiteral("noreply@cofidis.it\n"));
+    QVERIFY(BusinessSenders::contains(list,
+                                      QStringLiteral("noreply@cofidis.it")));
+    QVERIFY(!BusinessSenders::contains(list,
+                                       QStringLiteral("someone@cofidis.it")));
+}
+
+void TestBusinessSenders::aDomainEntryMatchesEveryAddressUnderIt()
+{
+    const BusinessSenders::List list =
+        BusinessSenders::parse(QStringLiteral("@cofidis.it\n"));
+    QVERIFY(BusinessSenders::contains(list,
+                                      QStringLiteral("noreply@cofidis.it")));
+    QVERIFY(BusinessSenders::contains(list,
+                                      QStringLiteral("billing@cofidis.it")));
+    QVERIFY(!BusinessSenders::contains(list,
+                                       QStringLiteral("a@example.org")));
+}
+
+void TestBusinessSenders::commentsAndBlankLinesAreIgnored()
+{
+    // A commented entry is the REJECT gesture: present in the file, not
+    // applied. This is the property the whole file format rests on.
+    const BusinessSenders::List list = BusinessSenders::parse(
+        QStringLiteral("# noreply@cofidis.it (47 messages)\n"
+                       "\n"
+                       "   \n"
+                       "billing@example.org\n"));
+    QVERIFY(!BusinessSenders::contains(list,
+                                       QStringLiteral("noreply@cofidis.it")));
+    QVERIFY(BusinessSenders::contains(list,
+                                      QStringLiteral("billing@example.org")));
+}
+
+void TestBusinessSenders::whitespaceAroundAnEntryIsIgnored()
+{
+    const BusinessSenders::List list =
+        BusinessSenders::parse(QStringLiteral("  billing@example.org  \n"));
+    QVERIFY(BusinessSenders::contains(list,
+                                      QStringLiteral("billing@example.org")));
+}
+
+void TestBusinessSenders::matchingIsCaseInsensitive()
+{
+    // Addresses arrive from headers in whatever case the sender used, so a
+    // list entry that matched only one casing would look broken at random.
+    const BusinessSenders::List list =
+        BusinessSenders::parse(QStringLiteral("NoReply@Cofidis.IT\n"));
+    QVERIFY(BusinessSenders::contains(list,
+                                      QStringLiteral("noreply@cofidis.it")));
+}
+
+void TestBusinessSenders::anAbsentFileMatchesNothing()
+{
+    QTemporaryDir dir;
+    const BusinessSenders::List list =
+        BusinessSenders::load(dir.filePath(QStringLiteral("does-not-exist")));
+    QVERIFY(!BusinessSenders::contains(list, QStringLiteral("a@example.org")));
+}
+
+QTEST_MAIN(TestBusinessSenders)
+#include "test_businesssenders.moc"