[PATCH v2 2/8] t3001, t7300: add testcase showcasing missed directory traversal

["Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com>]

From: Elijah Newren <newren@gmail.com>

In the last commit, we added a testcase showing that the directory
traversal machinery sometimes traverses into directories unnecessarily.
Here we show that there are cases where it does the opposite: it does
not traverse into directories, despite those directories having
important files that need to be flagged.

Add a testcase showing that `git ls-files -o -i --directory` can omit
some of the files it should be listing, and another showing that `git
clean -fX` can fail to clean out some of the expected files.

Signed-off-by: Elijah Newren <newren@gmail.com>
---
 t/t3001-ls-files-others-exclude.sh |  5 +++++
 t/t7300-clean.sh                   | 19 +++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/t/t3001-ls-files-others-exclude.sh b/t/t3001-ls-files-others-exclude.sh
index 1ec7cb57c7a8..ac05d1a17931 100755
--- a/t/t3001-ls-files-others-exclude.sh
+++ b/t/t3001-ls-files-others-exclude.sh
@@ -292,6 +292,11 @@ EOF
 	test_cmp expect actual
 '
 
+test_expect_failure 'ls-files with "**" patterns and --directory' '
+	# Expectation same as previous test
+	git ls-files --directory -o -i --exclude "**/a.1" >actual &&
+	test_cmp expect actual
+'
 
 test_expect_success 'ls-files with "**" patterns and no slashes' '
 	git ls-files -o -i --exclude "one**a.1" >actual &&
diff --git a/t/t7300-clean.sh b/t/t7300-clean.sh
index 5f1dc397c11e..337f9af1d74b 100755
--- a/t/t7300-clean.sh
+++ b/t/t7300-clean.sh
@@ -786,4 +786,23 @@ test_expect_failure 'avoid traversing into ignored directories' '
 	)
 '
 
+test_expect_failure 'traverse into directories that may have ignored entries' '
+	test_when_finished rm -f output &&
+	test_create_repo need-to-traverse-into-hierarchy &&
+	(
+		cd need-to-traverse-into-hierarchy &&
+		mkdir -p modules/foobar/src/generated &&
+		> modules/foobar/src/generated/code.c &&
+		> modules/foobar/Makefile &&
+		echo "/modules/**/src/generated/" >.gitignore &&
+
+		git clean -fX modules/foobar >../output &&
+
+		grep Removing ../output &&
+
+		test_path_is_missing modules/foobar/src/generated/code.c &&
+		test_path_is_file modules/foobar/Makefile
+	)
+'
+
 test_done
-- 
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