Add tests for hardlink nodes

test/Makefile

@@ -76,6 +76,7 @@ tests      += extract_dir_node
 tests      += extract_fifo_node
 tests      += extract_file_node
 tests      += extract_symlink_node
+tests      += extract_hardlink_node
 
 total      != echo $(tests) | wc -w | awk '{ print $$1 }'
 

test/extract_hardlink_node.c

@@ -0,0 +1,60 @@
+#include <errno.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "haggis.h"
+#include "mq.h"
+
+int main() {
+    haggis_node    *node0 = NULL, *node1 = NULL;
+    haggis_linkmap *map   = NULL;
+    haggis_mq       mq;
+    haggis_msg     *msg;
+    char           *orig  = "Makefile";
+    char           *lnk   = "output/Makefile";
+    int             ret   = 0;
+
+    map = haggis_linkmap_init();
+    assert(map != NULL);
+    if (haggis_mq_init(&mq))
+        return errno;
+    unlink(lnk);
+    ret = link(orig, lnk);
+    node0 = haggis_create_node(orig, sha256, map, &mq);
+    assert(node0 != NULL);
+    assert(node0->filetype.tag == normal);
+    assert(memcmp(node0->name.name, orig, 8) == 0);
+    if (ret) return ret;
+    node1 = haggis_create_node(lnk, sha256, map, &mq);
+    assert(node1 != NULL);
+    assert(node1->filetype.tag == hardlink);
+    assert(memcmp(node1->name.name, lnk, 15) == 0);
+    ret = haggis_extract_node("output/extracted", node0, &mq);
+    assert(ret == 0);
+    haggis_node_deinit(node0);
+    ret = haggis_extract_node("output/extracted", node1, &mq);
+    assert(ret == 0);
+    haggis_node_deinit(node1);
+    msg = haggis_mq_pop(&mq);
+    assert(msg->tag == NodeCreated);
+    assert(memcmp(msg->body.f_name, orig, 8) == 0);
+    haggis_msg_deinit(msg);
+    msg = haggis_mq_pop(&mq);
+    assert(msg->tag == NodeCreated);
+    assert(memcmp(msg->body.f_name, lnk, 15) == 0);
+    haggis_msg_deinit(msg);
+    msg = haggis_mq_pop(&mq);
+    assert(msg->tag == NodeExtracted);
+    assert(memcmp(msg->body.f_name, orig, 8) == 0);
+    haggis_msg_deinit(msg);
+    msg = haggis_mq_pop(&mq);
+    assert(msg->tag == NodeExtracted);
+    assert(memcmp(msg->body.f_name, lnk, 15) == 0);
+    haggis_msg_deinit(msg);
+    haggis_linkmap_deinit(map);
+    return 0;
+}