git-status: Test --ignored behavior

Test all possible use-cases of git-status "--ignored" with the
"--untracked-files" option with values "normal" and "all":

 - An untracked directory is listed as untracked if it has a mix of
   untracked and ignored files in it.  With -uall, ignored/untracked
   files are listed as ignored/untracked.

 - An untracked directory with only ignored files is listed as
   ignored.  With -uall, all files in the directory are listed.

 - An ignored directory is listed as ignored. With -uall, all files
   in the directory are listed as ignored.

 - An ignored and committed directory is listed as ignored if it has
   untracked files.  With -uall, all untracked files in the
   directory are listed as ignored.

Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7061-wtstatus-ignore.sh

@@ -0,0 +1,146 @@
+#!/bin/sh
+
+test_description='git-status ignored files'
+
+. ./test-lib.sh
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+?? untracked/
+EOF
+
+test_expect_success 'status untracked directory with --ignored' '
+	echo "ignored" >.gitignore &&
+	mkdir untracked &&
+	: >untracked/ignored &&
+	: >untracked/uncommitted &&
+	git status --porcelain --ignored >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+?? untracked/uncommitted
+!! untracked/ignored
+EOF
+
+test_expect_success 'status untracked directory with --ignored -u' '
+	git status --porcelain --ignored -u >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! ignored/
+EOF
+
+test_expect_success 'status ignored directory with --ignore' '
+	rm -rf untracked &&
+	mkdir ignored &&
+	: >ignored/uncommitted &&
+	git status --porcelain --ignored >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! ignored/uncommitted
+EOF
+
+test_expect_success 'status ignored directory with --ignore -u' '
+	git status --porcelain --ignored -u >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! untracked-ignored/
+EOF
+
+test_expect_success 'status untracked directory with ignored files with --ignore' '
+	rm -rf ignored &&
+	mkdir untracked-ignored &&
+	mkdir untracked-ignored/test &&
+	: >untracked-ignored/ignored &&
+	: >untracked-ignored/test/ignored &&
+	git status --porcelain --ignored >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! untracked-ignored/ignored
+!! untracked-ignored/test/ignored
+EOF
+
+test_expect_success 'status untracked directory with ignored files with --ignore -u' '
+	git status --porcelain --ignored -u >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+EOF
+
+test_expect_success 'status ignored tracked directory with --ignore' '
+	rm -rf untracked-ignored &&
+	mkdir tracked &&
+	: >tracked/committed &&
+	git add tracked/committed &&
+	git commit -m. &&
+	echo "tracked" >.gitignore &&
+	git status --porcelain --ignored >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+EOF
+
+test_expect_success 'status ignored tracked directory with --ignore -u' '
+	git status --porcelain --ignored -u >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! tracked/
+EOF
+
+test_expect_success 'status ignored tracked directory and uncommitted file with --ignore' '
+	: >tracked/uncommitted &&
+	git status --porcelain --ignored >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! tracked/uncommitted
+EOF
+
+test_expect_success 'status ignored tracked directory and uncommitted file with --ignore -u' '
+	git status --porcelain --ignored -u >actual &&
+	test_cmp expected actual
+'
+
+test_done