[libsoup/wip/fuzzing] tests: Add coverage for soup_uri_decode_data_uri()

[Patrick Griffis <pgriffis src gnome org>]

commit 547532496bb3c3b99fadd86ccd15c993c6f7dd2c
Author: Patrick Griffis <pgriffis igalia com>
Date:   Wed Dec 16 11:32:48 2020 -0600

    tests: Add coverage for soup_uri_decode_data_uri()

 tests/uri-parsing-test.c | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
---
diff --git a/tests/uri-parsing-test.c b/tests/uri-parsing-test.c
index a8dd91c5..8d96ce63 100644
--- a/tests/uri-parsing-test.c
+++ b/tests/uri-parsing-test.c
@@ -115,6 +115,46 @@ do_copy_tests (void)
         g_uri_unref (uri);
 }
 
+#define CONTENT_TYPE_DEFAULT "text/plain;charset=US-ASCII"
+
+static struct {
+       const char *input;
+        const char *output;
+        const char *content_type;
+} data_uri_tests[] = {
+        { "invalid:", NULL, NULL },
+        { "data:", "", CONTENT_TYPE_DEFAULT },
+        { "data:hello", "hello", CONTENT_TYPE_DEFAULT },
+        { "data:text/plain,hello", "hello", "text/plain" },
+        { "data:text/plain;charset=UTF-8,hello", "hello", "text/plain;charset=UTF-8" },
+        { "data:text/plain;base64,aGVsbG8=", "hello", "text/plain" },
+        { "data:text/plain;base64,invalid=", "", "text/plain" },
+        { "data:,", "", CONTENT_TYPE_DEFAULT },
+};
+
+static void
+do_data_uri_tests (void)
+{
+       int i;
+
+       for (i = 0; i < G_N_ELEMENTS (data_uri_tests); i++) {
+                char *content_type = NULL;
+                GBytes *output = soup_uri_decode_data_uri (data_uri_tests[i].input, &content_type);
+
+                if (data_uri_tests[i].output == NULL) {
+                        g_assert_null (output);
+                        g_assert_null (content_type);
+                        continue;
+                }
+
+                g_assert_nonnull (output);
+                g_assert_cmpstr (content_type, ==, data_uri_tests[i].content_type);
+
+               g_free (content_type);
+               g_bytes_unref (output);
+       }
+}
+
 int
 main (int argc, char **argv)
 {
@@ -124,6 +164,7 @@ main (int argc, char **argv)
 
        g_test_add_func ("/uri/equality", do_equality_tests);
        g_test_add_func ("/uri/copy", do_copy_tests);
+        g_test_add_func ("/data", do_data_uri_tests);
 
        ret = g_test_run ();