scm: add some unit-tests

Some basic unit tests. More will follow.

scm/meson.build

@@ -56,3 +56,16 @@ if makeinfo.found()
     meson.add_install_script(install_info_script, infodir, 'mu-scm.info')
   endif
 endif
+
+if not get_option('tests').disabled()
+
+  srcdir=meson.current_source_dir()
+  def_srcdir='-DMU_SCM_SRCDIR="' + srcdir + '"'
+
+  test('test-scm',
+       executable('test-scm',
+                  'mu-scm.cc',
+                  install: false,
+                  dependencies: [mu_scm_dep],
+                  cpp_args: [mu_scm_dir_arg, def_srcdir, '-DBUILD_TESTS']))
+endif

scm/mu-scm-test.scm

@@ -0,0 +1,76 @@
+;; unit tests
+
+(use-modules (mu) (srfi srfi-64))
+
+(define (test-basic)
+  (test-begin "test-basic")
+
+  (test-equal "mcount" 19 (mcount))
+  (test-equal "cfind" 29 (length (cfind "")))
+  (test-equal "mfind" 19 (length (mfind "")))
+
+  (test-end "test-basic"))
+
+(define (test-basic-mfind)
+
+  (test-begin "test-basic-mfind")
+
+  (let ((msg (car (mfind ""))))
+    ;; size
+    (test-equal 490 (size msg))
+    ;; message-id
+    (test-equal "abcd$efgh@example.com" (message-id msg))
+    ;; subject
+    (test-equal "Greetings from Lothlórien" (subject msg))
+    ;; from
+    (test-equal 1 (length (from msg)))
+    (let ((sender (car (from msg))))
+      (test-equal "Frodo Baggins" (assoc-ref sender 'name))
+      (test-equal "frodo@example.com" (assoc-ref sender 'email)))
+    ;; to
+    (test-equal 1 (length (to msg)))
+    (let ((recip (car (to msg))))
+      (test-equal "Bilbo Baggins" (assoc-ref recip 'name))
+      (test-equal "bilbo@anotherexample.com" (assoc-ref recip 'email)))
+
+    ;; no date
+    (test-assert (not (date msg)))
+
+    ;; flags
+    (test-equal '(unread) (flags msg))
+    (test-assert (unread? msg))
+    (test-assert (not (seen? msg)))
+    (test-assert (not (new? msg))))
+
+  (test-end "test-basic-mfind"))
+
+(define (test-mfind)
+  (test-begin "test-mfind")
+  (let ((msg (car (mfind "" #:sort-field 'date #:reverse? #t))))
+
+    (test-equal "test with multi to and cc" (subject msg) )
+    (test-equal "2016-05-15T16:57:25" (time-t->iso-date (date msg))))
+
+  (test-end "test-mfind"))
+
+(define (test-helpers)
+  (test-begin "test-helpers")
+  (test-equal 1750077792 (iso-date->time-t "2025-06-16T12:43:12"))
+  (test-equal 1750075200 (iso-date->time-t "2025-06-16T12"))
+
+  (test-equal "2025-06-16T12:43:12" (time-t->iso-date 1750077792))
+  (test-equal "                   " (time-t->iso-date #f))
+  (test-end "test-helpers"))
+
+(define* (main _ #:rest args)
+  (let ((runner (test-runner-simple)))
+    (test-with-runner runner
+      (test-begin "mu-scm-tests")
+
+      (test-basic)
+      (test-basic-mfind)
+      (test-mfind)
+      (test-helpers)
+
+      (test-end "mu-scm-tests")
+      (exit (test-runner-fail-count runner)))))

scm/mu-scm.cc

@@ -158,3 +158,58 @@ Mu::Scm::run(const Mu::Scm::Config& conf) {
 
 	return Ok();
 }
+
+
+
+
+#ifdef BUILD_TESTS
+
+/*
+ * Tests.
+ *
+ */
+#include <config.h>
+#include <mu-store.hh>
+#include "utils/mu-test-utils.hh"
+
+
+static void
+test_scm_script()
+{
+	TempDir tempdir{};
+	const auto MuTestMaildir{ Mu::canonicalize_filename(MU_TESTMAILDIR, "/")};
+	auto store{Store::make_new(tempdir.path(), MuTestMaildir)};
+	assert_valid_result(store);
+
+	{
+		const auto res = store->indexer().start({}, true/*block*/);
+		g_assert_true(res);
+	}
+
+	Mu::Options opts{};
+	opts.scm.script_path = join_paths(MU_SCM_SRCDIR, "mu-scm-test.scm");
+
+	Mu::Scm::Config scm_conf {
+		.store = *store,
+		.options = opts
+	};
+
+	{
+		const auto res = Mu::Scm::run(scm_conf);
+		assert_valid_result(res);
+	}
+}
+
+int
+main(int argc, char* argv[])
+{
+	::setenv("MU_SCM_DIR", MU_SCM_SRCDIR, 1);
+
+	mu_test_init(&argc, &argv);
+
+	g_test_add_func("/scm/script", test_scm_script);
+
+	return g_test_run();
+}
+
+#endif /*BUILD_TESTS*/