tests: new test case for chip iterators

Verify that we can correctly break a loop in gpiod_foreach_chip().

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>

diff --git a/tests/unit/tests-iter.c b/tests/unit/tests-iter.c
index f727d6cfe8c1b73ae1564468897ea367bcceb1ea..00d63ba40e9a0bf5b350fe468fa5a24ac52ad8ec 100644 (file)
--- a/tests/unit/tests-iter.c
+++ b/tests/unit/tests-iter.c
@@ -88,6 +88,36 @@ GU_DEFINE_TEST(chip_iter_noclose,
               "gpiod_chip_iter - simple loop, noclose variant",
               GU_LINES_UNNAMED, { 8, 8, 8 });
 
+static void chip_iter_break(void)
+{
+       GU_CLEANUP(gu_free_chip_iter) struct gpiod_chip_iter *iter = NULL;
+       struct gpiod_chip *chip;
+       int i = 0;
+
+       iter = gpiod_chip_iter_new();
+       GU_ASSERT_NOT_NULL(iter);
+
+       gpiod_foreach_chip(iter, chip) {
+               GU_ASSERT(!gpiod_chip_iter_err(iter));
+
+               if ((strcmp(gpiod_chip_label(chip), "gpio-mockup-A") == 0) ||
+                   (strcmp(gpiod_chip_label(chip), "gpio-mockup-B") == 0) ||
+                   (strcmp(gpiod_chip_label(chip), "gpio-mockup-C") == 0))
+                       i++;
+
+               if (i == 3)
+                       break;
+       }
+
+       gpiod_chip_iter_free(iter);
+       iter = NULL;
+
+       GU_ASSERT_EQ(i, 3);
+}
+GU_DEFINE_TEST(chip_iter_break,
+              "gpiod_chip_iter - break",
+              GU_LINES_UNNAMED, { 8, 8, 8, 8, 8 });
+
 static void line_iter(void)
 {
        GU_CLEANUP(gu_close_chip) struct gpiod_chip *chip = NULL;