This patch adds unit tests for cbuffer's memory direct access
finctionality and browsing methods.
---
unit/test-cbuffer.c | 121 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 121 insertions(+)
diff --git a/unit/test-cbuffer.c b/unit/test-cbuffer.c
index 5a3482d..d5507a1 100644
--- a/unit/test-cbuffer.c
+++ b/unit/test-cbuffer.c
@@ -200,6 +200,123 @@ static void cbt_manual(struct cbt_fixture *fix, gconstpointer test_data)
g_assert(cbuffer_is_empty(fix->cbuff));
}
+static void cbt_peek(struct cbt_fixture *fix, gconstpointer test_data)
+{
+ char ch = 1;
+ /* tail */
+ cbuffer_write(fix->cbuff, 'a');
+ cbuffer_write(fix->cbuff, 'b');
+ cbuffer_write(fix->cbuff, 'c');
+ cbuffer_write(fix->cbuff, 'd');
+ /* head */
+
+ /* peek from head of "abcd" string */
+ g_assert_cmpint('a', ==, *cbuffer_peek_tail(fix->cbuff, 0));
+ g_assert_cmpint('b', ==, *cbuffer_peek_tail(fix->cbuff, 1));
+ g_assert_cmpint('c', ==, *cbuffer_peek_tail(fix->cbuff, 2));
+ g_assert_cmpint('d', ==, *cbuffer_peek_tail(fix->cbuff, 3));
+ /* no boundary check here - will wrap around if index > buffer size */
+ /* g_assert_cmpint('\0', ==, *cbuffer_peek_head(fix->cbuff, 4)); */
+
+ /* peek from tail of "abcd" string */
+ g_assert_cmpint('d', ==, *cbuffer_peek_head(fix->cbuff, 0));
+ g_assert_cmpint('c', ==, *cbuffer_peek_head(fix->cbuff, 1));
+ g_assert_cmpint('b', ==, *cbuffer_peek_head(fix->cbuff, 2));
+ g_assert_cmpint('a', ==, *cbuffer_peek_head(fix->cbuff, 3));
+ /* no boundary check here - will wrap around if index > buffer size */
+ /* g_assert_cmpint('\0', ==, *cbuffer_peek_tail(fix->cbuff, 4)); */
+
+ /* now read peeked chars in the right sequence */
+ cbuffer_read(fix->cbuff, &ch);
+ g_assert_cmpint('a', ==, ch);
+ cbuffer_read(fix->cbuff, &ch);
+ g_assert_cmpint('b', ==, ch);
+ cbuffer_read(fix->cbuff, &ch);
+ g_assert_cmpint('c', ==, ch);
+ cbuffer_read(fix->cbuff, &ch);
+ g_assert_cmpint('d', ==, ch);
+ ch = 1;
+ cbuffer_read(fix->cbuff, &ch);
+ g_assert_cmpint(1, ==, ch);
+ g_assert(cbuffer_is_empty(fix->cbuff));
+}
+
+static void cbt_get_freechunk(struct cbt_fixture *fix, gconstpointer test_data)
+{
+ char ch = 0;
+ unsigned int i;
+
+ g_assert_cmpuint(cbuffer_get_free_chunk_size(fix->cbuff),
+ ==, cbuffer_get_size(fix->cbuff));
+
+ /* fill the whole buffer */
+ for (i = 0; i < cbuffer_get_size(fix->cbuff); ++i) {
+ g_assert(!cbuffer_is_full(fix->cbuff));
+ cbuffer_write(fix->cbuff, 'a');
+ }
+ g_assert_cmpint(cbuffer_get_size(fix->cbuff),
+ ==, cbuffer_get_length(fix->cbuff));
+ g_assert_cmpuint(cbuffer_get_free_chunk_size(fix->cbuff), ==, 0);
+
+ /* read more than a half of the data */
+ for (i = 0; i <= cbuffer_get_size(fix->cbuff) / 2; ++i) {
+ g_assert(!cbuffer_is_empty(fix->cbuff));
+ cbuffer_read(fix->cbuff, &ch);
+ g_assert_cmpint('a', ==, ch);
+ }
+ g_assert_cmpint((cbuffer_get_size(fix->cbuff) / 2) - 1, ==,
+ cbuffer_get_length(fix->cbuff));
+
+ /* fill it again leaving 2 empty spaces */
+ for (i = 0; i < (cbuffer_get_size(fix->cbuff) / 2) - 1; ++i) {
+ g_assert(!cbuffer_is_full(fix->cbuff));
+ cbuffer_write(fix->cbuff, 'b');
+ }
+ g_assert_cmpint(cbuffer_get_size(fix->cbuff) - 2, ==,
+ cbuffer_get_length(fix->cbuff));
+
+ /* s- buffers start offset
+ * e- buffers end offset
+ * n- place where new data will be appended
+ */
+ /* [XXXX|n...|XXXXX]
+ * e s
+ */
+ g_assert_cmpuint(cbuffer_get_free_chunk_size(fix->cbuff), ==, 2);
+
+ /* [|n.............]
+ * s/e
+ */
+ cbuffer_drain(fix->cbuff);
+ g_assert_cmpuint(cbuffer_get_free_chunk_size(fix->cbuff),
+ ==, cbuffer_get_size(fix->cbuff));
+
+ /* [|X|n...........]
+ * s e
+ */
+ cbuffer_drain(fix->cbuff);
+ cbuffer_write(fix->cbuff, 'b');
+ g_assert_cmpuint(cbuffer_get_free_chunk_size(fix->cbuff),
+ ==, cbuffer_get_size(fix->cbuff) - 1);
+
+ /* [n...........|X|]
+ * e s
+ */
+ cbuffer_drain(fix->cbuff);
+ for (i = 0; i < cbuffer_get_size(fix->cbuff); ++i) {
+ g_assert(!cbuffer_is_full(fix->cbuff));
+ cbuffer_write(fix->cbuff, 'a');
+ }
+ /* read all but one */
+ for (i = 0; i < cbuffer_get_size(fix->cbuff) - 1; ++i) {
+ g_assert(!cbuffer_is_empty(fix->cbuff));
+ cbuffer_read(fix->cbuff, &ch);
+ g_assert_cmpint('a', ==, ch);
+ }
+ g_assert_cmpuint(cbuffer_get_free_chunk_size(fix->cbuff),
+ ==, cbuffer_get_size(fix->cbuff) - 1);
+}
+
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
@@ -217,5 +334,9 @@ int main(int argc, char **argv)
cbt_drain, cbt_fix_teardown);
g_test_add("/cbuffer/manual", struct cbt_fixture, 0, cbt_fix_setup,
cbt_manual, cbt_fix_teardown);
+ g_test_add("/cbuffer/peek", struct cbt_fixture, 0, cbt_fix_setup,
+ cbt_peek, cbt_fix_teardown);
+ g_test_add("/cbuffer/get_freechunk", struct cbt_fixture, 0,
+ cbt_fix_setup, cbt_get_freechunk, cbt_fix_teardown);
return g_test_run();
}
--
1.7.9.5
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