Add a test to check existence of loose objects.

Signed-off-by: Julio Espinoza-Sokal <julioes@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

tests/t0201-existsloose.c

+#include "test_lib.h"
+#include "test_helpers.h"
+#include <git/odb.h>
+#include "fileops.h"
+
+static char *odb_dir = "test-objects";
+
+/* one == 8b137891791fe96927ad78e64b0aad7bded08bdc */
+static unsigned char one_bytes[] = {
+    0x31, 0x78, 0x9c, 0xe3, 0x02, 0x00, 0x00, 0x0b,
+    0x00, 0x0b,
+};
+
+static unsigned char one_data[] = {
+    0x0a,
+};
+
+static object_data one = {
+    one_bytes,
+    sizeof(one_bytes),
+    "8b137891791fe96927ad78e64b0aad7bded08bdc",
+    "blob",
+    "test-objects/8b",
+    "test-objects/8b/137891791fe96927ad78e64b0aad7bded08bdc",
+    one_data,
+    sizeof(one_data),
+};
+
+
+BEGIN_TEST(exists_loose_one)
+    git_odb *db;
+    git_oid id, id2;
+
+    must_pass(write_object_files(odb_dir, &one));
+    must_pass(git_odb_open(&db, odb_dir));
+    must_pass(git_oid_mkstr(&id, one.id));
+
+    must_be_true(git_odb_exists(db, &id));
+
+	/* Test for a non-existant object */
+    must_pass(git_oid_mkstr(&id2,"8b137891791fe96927ad78e64b0aad7bded08baa"));
+	must_be_true(0 == git_odb_exists(db, &id2));
+
+    git_odb_close(db);
+    must_pass(remove_object_files(odb_dir, &one));
+END_TEST