tests: add test cases for blobmsg parsing

Increasing test coverage.

Signed-off-by: Petr Štetiar <ynezz@true.cz>

tests/test-blobmsg-parse.c

@@ -0,0 +1,74 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <libgen.h>
+
+#include "blobmsg.h"
+
+enum {
+	FOO_MESSAGE,
+	FOO_LIST,
+	FOO_TESTDATA,
+	__FOO_MAX
+};
+
+static const struct blobmsg_policy foo_policy[] = {
+	[FOO_MESSAGE] = {
+		.name = "message",
+		.type = BLOBMSG_TYPE_STRING,
+	},
+	[FOO_LIST] = {
+		.name = "list",
+		.type = BLOBMSG_TYPE_ARRAY,
+	},
+	[FOO_TESTDATA] = {
+		.name = "testdata",
+		.type = BLOBMSG_TYPE_TABLE,
+	},
+};
+
+static void dump_result(const char *fn, int r, const char *filename, struct blob_attr **tb)
+{
+	fprintf(stdout, "%s: %s: %c%c%c (%d)\n", basename((char *) filename), fn,
+		tb[FOO_MESSAGE] ? 'M' : '.',
+		tb[FOO_LIST] ? 'L' : '.',
+		tb[FOO_TESTDATA] ? 'T' : '.',
+		r);
+}
+
+static void test_blobmsg(const char *filename)
+{
+#define BUF_LEN 256
+	int r = 0;
+	FILE *fd = NULL;
+	size_t len = 0;
+	char buf[BUF_LEN+1] = { 0 };
+	struct blob_attr *tb[__FOO_MAX];
+
+	fd = fopen(filename, "r");
+	if (!fd) {
+		fprintf(stderr, "unable to open %s", filename);
+		return;
+	}
+
+	len = fread(&buf, 1, BUF_LEN, fd);
+	fclose(fd);
+
+	r = blobmsg_parse(foo_policy, ARRAY_SIZE(foo_policy), tb, buf, len);
+	dump_result("blobmsg_parse", r, filename, tb);
+
+	r = blobmsg_parse_array(foo_policy, ARRAY_SIZE(foo_policy), tb, buf, len);
+	dump_result("blobmsg_parse_array", r, filename, tb);
+}
+
+int main(int argc, char *argv[])
+{
+	if (argc != 2) {
+		fprintf(stderr, "Usage: %s <blobmsg.bin>\n", argv[0]);
+		return 3;
+	}
+
+	test_blobmsg(argv[1]);
+
+	return 0;
+}