[GSoC][PATCH v7 03/10] dir-iterator: add tests for dir-iterator API

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From: Daniel Ferreira <bnmvco@xxxxxxxxx>

Create t/helper/test-dir-iterator.c, which prints relevant information
about a directory tree iterated over with dir-iterator.

Create t/t0066-dir-iterator.sh, which tests that dir-iterator does
iterate through a whole directory tree as expected.

Signed-off-by: Daniel Ferreira <bnmvco@xxxxxxxxx>
[matheus.bernardino: update to use test-tool and some minor aesthetics]
Helped-by: Matheus Tavares <matheus.bernardino@xxxxxx>
Signed-off-by: Matheus Tavares <matheus.bernardino@xxxxxx>
---
 Makefile                     |  1 +
 t/helper/test-dir-iterator.c | 33 ++++++++++++++++++++++
 t/helper/test-tool.c         |  1 +
 t/helper/test-tool.h         |  1 +
 t/t0066-dir-iterator.sh      | 55 ++++++++++++++++++++++++++++++++++++
 5 files changed, 91 insertions(+)
 create mode 100644 t/helper/test-dir-iterator.c
 create mode 100755 t/t0066-dir-iterator.sh

diff --git a/Makefile b/Makefile
index f58bf14c7b..7e2a44cccc 100644
--- a/Makefile
+++ b/Makefile
@@ -704,6 +704,7 @@ TEST_BUILTINS_OBJS += test-config.o
 TEST_BUILTINS_OBJS += test-ctype.o
 TEST_BUILTINS_OBJS += test-date.o
 TEST_BUILTINS_OBJS += test-delta.o
+TEST_BUILTINS_OBJS += test-dir-iterator.o
 TEST_BUILTINS_OBJS += test-drop-caches.o
 TEST_BUILTINS_OBJS += test-dump-cache-tree.o
 TEST_BUILTINS_OBJS += test-dump-fsmonitor.o
diff --git a/t/helper/test-dir-iterator.c b/t/helper/test-dir-iterator.c
new file mode 100644
index 0000000000..84f50bed8c
--- /dev/null
+++ b/t/helper/test-dir-iterator.c
@@ -0,0 +1,33 @@
+#include "test-tool.h"
+#include "git-compat-util.h"
+#include "strbuf.h"
+#include "iterator.h"
+#include "dir-iterator.h"
+
+/* Argument is a directory path to iterate over */
+int cmd__dir_iterator(int argc, const char **argv)
+{
+	struct strbuf path = STRBUF_INIT;
+	struct dir_iterator *diter;
+
+	if (argc < 2)
+		die("BUG: test-dir-iterator needs one argument");
+
+	strbuf_add(&path, argv[1], strlen(argv[1]));
+
+	diter = dir_iterator_begin(path.buf);
+
+	while (dir_iterator_advance(diter) == ITER_OK) {
+		if (S_ISDIR(diter->st.st_mode))
+			printf("[d] ");
+		else if (S_ISREG(diter->st.st_mode))
+			printf("[f] ");
+		else
+			printf("[?] ");
+
+		printf("(%s) [%s] %s\n", diter->relative_path, diter->basename,
+		       diter->path.buf);
+	}
+
+	return 0;
+}
diff --git a/t/helper/test-tool.c b/t/helper/test-tool.c
index 087a8c0cc9..7bc9bb231e 100644
--- a/t/helper/test-tool.c
+++ b/t/helper/test-tool.c
@@ -19,6 +19,7 @@ static struct test_cmd cmds[] = {
 	{ "ctype", cmd__ctype },
 	{ "date", cmd__date },
 	{ "delta", cmd__delta },
+	{ "dir-iterator", cmd__dir_iterator },
 	{ "drop-caches", cmd__drop_caches },
 	{ "dump-cache-tree", cmd__dump_cache_tree },
 	{ "dump-fsmonitor", cmd__dump_fsmonitor },
diff --git a/t/helper/test-tool.h b/t/helper/test-tool.h
index 7e703f3038..ec0ffbd0cb 100644
--- a/t/helper/test-tool.h
+++ b/t/helper/test-tool.h
@@ -9,6 +9,7 @@ int cmd__config(int argc, const char **argv);
 int cmd__ctype(int argc, const char **argv);
 int cmd__date(int argc, const char **argv);
 int cmd__delta(int argc, const char **argv);
+int cmd__dir_iterator(int argc, const char **argv);
 int cmd__drop_caches(int argc, const char **argv);
 int cmd__dump_cache_tree(int argc, const char **argv);
 int cmd__dump_fsmonitor(int argc, const char **argv);
diff --git a/t/t0066-dir-iterator.sh b/t/t0066-dir-iterator.sh
new file mode 100755
index 0000000000..6e06dc038d
--- /dev/null
+++ b/t/t0066-dir-iterator.sh
@@ -0,0 +1,55 @@
+#!/bin/sh
+
+test_description='Test the dir-iterator functionality'
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+	mkdir -p dir &&
+	mkdir -p dir/a/b/c/ &&
+	>dir/b &&
+	>dir/c &&
+	mkdir -p dir/d/e/d/ &&
+	>dir/a/b/c/d &&
+	>dir/a/e &&
+	>dir/d/e/d/a &&
+
+	mkdir -p dir2/a/b/c/ &&
+	>dir2/a/b/c/d
+'
+
+test_expect_success 'dir-iterator should iterate through all files' '
+	cat >expected-iteration-sorted-output <<-EOF &&
+	[d] (a) [a] ./dir/a
+	[d] (a/b) [b] ./dir/a/b
+	[d] (a/b/c) [c] ./dir/a/b/c
+	[d] (d) [d] ./dir/d
+	[d] (d/e) [e] ./dir/d/e
+	[d] (d/e/d) [d] ./dir/d/e/d
+	[f] (a/b/c/d) [d] ./dir/a/b/c/d
+	[f] (a/e) [e] ./dir/a/e
+	[f] (b) [b] ./dir/b
+	[f] (c) [c] ./dir/c
+	[f] (d/e/d/a) [a] ./dir/d/e/d/a
+	EOF
+
+	test-tool dir-iterator ./dir >out &&
+	sort <out >./actual-iteration-sorted-output &&
+
+	test_cmp expected-iteration-sorted-output actual-iteration-sorted-output
+'
+
+test_expect_success 'dir-iterator should list files in the correct order' '
+	cat >expected-pre-order-output <<-EOF &&
+	[d] (a) [a] ./dir2/a
+	[d] (a/b) [b] ./dir2/a/b
+	[d] (a/b/c) [c] ./dir2/a/b/c
+	[f] (a/b/c/d) [d] ./dir2/a/b/c/d
+	EOF
+
+	test-tool dir-iterator ./dir2 >actual-pre-order-output &&
+
+	test_cmp expected-pre-order-output actual-pre-order-output
+'
+
+test_done
-- 
2.22.0




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