tests: Cover few remaining branches with unit test for ACA handling

Signed-off-by: Jakub Jelen <jjelen@redhat.com>

3 files changed, 102 insertions, 0 deletions

diff --git a/Makefile.am b/Makefile.am
index 3e81def..e2620cb 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -86,12 +86,20 @@ AM_TESTS_ENVIRONMENT += \
 	SOFTHSM2_CONF=tests/softhsm2.conf
 
 test_programs =					\
+	tests/unit_cac				\
 	tests/libcacard				\
 	tests/simpletlv				\
 	tests/hwtests				\
 	tests/initialize			\
 	$(NULL)
 
+tests_unit_cac_LDADD =				\
+	$(GLIB2_LIBS)				\
+	libcacard.la				\
+	src/common.lo				\
+	src/simpletlv.lo			\
+	$(NULL)
+
 tests_libcacard_SOURCES =			\
 	tests/common.c				\
 	tests/common.h				\
diff --git a/tests/meson.build b/tests/meson.build
index 6ce13e3..57b8d2d 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -11,6 +11,19 @@ modutil_dep = find_program('modutil', required: false)
 openssl_dep = find_program('openssl', required: false)
 softhsm_util_dep = find_program('softhsm2-util', required: false)
 
+unit_cac_test = executable(
+  'unit_cac',
+  ['unit_cac.c'],
+  objects: libcacard.extract_objects('src/simpletlv.c', 'src/common.c'),
+  dependencies: [libcacard_dep],
+)
+
+test(
+  'unit_cac',
+  unit_cac_test,
+  env: env,
+)
+
 libcacard_test = executable(
   'libcacard',
   ['libcacard.c', 'common.c'],
diff --git a/tests/unit_cac.c b/tests/unit_cac.c
new file mode 100644
index 0000000..de91577
--- /dev/null
+++ b/tests/unit_cac.c
@@ -0,0 +1,81 @@
+/*
+ * Unit-test low-level CAC code
+ *
+ * Copyright 2022 Red Hat, Inc.
+ *
+ * Authors:
+ *  Jakub Jelen <jjelen@redhat.com>
+ *
+ * This code is licensed under the GNU LGPL, version 2.1 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#include <glib.h>
+#include "cac-aca.c"
+
+struct acr_applet a = {
+    .id = 0x42, .num_objects = 1, .objects = {
+            {.id = "\xab\xcd", .num_ins = 1, .ins = {
+                {.code = 0x01, .acrid = 0x02, .config = ACR_INS_CONFIG_P2, .p1 = 0x03, .p2 = 0x04, .data1 = 0x05}
+            }
+        }
+    }
+};
+
+static void test_acr_applet_object_encode(void)
+{
+    unsigned int buflen, objlen;
+    unsigned char *buf = NULL, *p = NULL;
+
+    /* Too short */
+    buflen = 0;
+    p = acr_applet_object_encode(a.objects, buf, buflen, &objlen);
+    g_assert_null(p);
+
+    buflen = 16;
+    buf = g_malloc(buflen);
+
+    /* Still too short */
+    buflen = 2;
+    p = acr_applet_object_encode(a.objects, buf, buflen, &objlen);
+    g_assert_null(p);
+
+    /* Still too short */
+    buflen = 4;
+    p = acr_applet_object_encode(a.objects, buf, buflen, &objlen);
+    g_assert_null(p);
+
+    /* This should do */
+    buflen = 16;
+    p = acr_applet_object_encode(a.objects, buf, buflen, &objlen);
+    g_assert_cmpmem(buf, objlen, "\xab\xcd\x01\x02\x04\x02", 6);
+    g_free(buf);
+}
+
+static void test_acr_applet_encode(void)
+{
+    unsigned int outlen;
+    unsigned char *p = NULL;
+
+    /* Wrong arguments */
+    p = acr_applet_encode(&a, NULL);
+    g_assert_null(p);
+
+    p = acr_applet_encode(&a, &outlen);
+    g_assert_cmpmem(p, outlen, "\x42\x01\x82\x06\xab\xcd\x01\x02\x04\x02", 10);
+    g_free(p);
+}
+
+int main(int argc, char *argv[])
+{
+    int ret;
+
+    g_test_init(&argc, &argv, NULL);
+
+    g_test_add_func("/unittests/cac/acr_applet_object_encode", test_acr_applet_object_encode);
+    g_test_add_func("/unittests/cac/acr_applet_encode", test_acr_applet_encode);
+    ret = g_test_run();
+
+    return ret;
+}
+
+/* vim: set ts=4 sw=4 tw=0 noet expandtab: */