t0028: add more tests

After I discovered that UTF-16-LE-BOM test was bugged and still
succeeded, I decided that better tests are required. Possibly the best
option here is to compare git results against hardcoded ground truth.

The new tests also cover more interesting chars where (ANSI != UTF-8).

Signed-off-by: Alexandr Miloslavskiy <[email protected]>

Author: SyntevoAlex

t/t0028-working-tree-encoding.sh

@@ -280,4 +280,43 @@ test_expect_success ICONV_SHIFT_JIS 'check roundtrip encoding' '
 	git reset
 '
 
+# $1: checkout encoding
+# $2: test string
+# $3: binary test string in checkout encoding
+test_commit_utf8_checkout_other () {
+	encoding="$1"
+	orig_string="$2"
+	expect_bytes="$3"
+	
+	test_expect_success "Commit utf-8, checkout ${encoding}" '
+		test_when_finished "git checkout HEAD -- .gitattributes" &&
+		
+		test_ext="commit_utf8_checkout_${encoding}" &&
+		test_file="test.${test_ext}" &&
+		
+		# Commit as utf-8
+		echo "*.${test_ext} text working-tree-encoding=utf-8" >.gitattributes &&
+		printf "${orig_string}" >"${test_file}" &&
+		git add "${test_file}" &&
+		git commit -m "Test data" &&
+
+		# Checkout in tested encoding
+		rm "${test_file}" &&
+		echo "*.${test_ext} text working-tree-encoding=${encoding}" >.gitattributes &&
+		git checkout HEAD -- "${test_file}" &&
+		
+		# Test
+		printf "${expect_bytes}" > "${test_file}.raw" &&
+		test_cmp_bin "${test_file}.raw" "${test_file}"
+	'
+}
+
+test_commit_utf8_checkout_other "UTF-8"        "Test Тест" "\124\145\163\164\040\320\242\320\265\321\201\321\202"
+test_commit_utf8_checkout_other "UTF-16LE"     "Test Тест" "\124\000\145\000\163\000\164\000\040\000\042\004\065\004\101\004\102\004"
+test_commit_utf8_checkout_other "UTF-16BE"     "Test Тест" "\000\124\000\145\000\163\000\164\000\040\004\042\004\065\004\101\004\102"
+test_commit_utf8_checkout_other "UTF-16LE-BOM" "Test Тест" "\377\376\124\000\145\000\163\000\164\000\040\000\042\004\065\004\101\004\102\004"
+test_commit_utf8_checkout_other "UTF-16BE-BOM" "Test Тест" "\376\377\000\124\000\145\000\163\000\164\000\040\004\042\004\065\004\101\004\102"
+test_commit_utf8_checkout_other "UTF-32LE"     "Test Тест" "\124\000\000\000\145\000\000\000\163\000\000\000\164\000\000\000\040\000\000\000\042\004\000\000\065\004\000\000\101\004\000\000\102\004\000\000"
+test_commit_utf8_checkout_other "UTF-32BE"     "Test Тест" "\000\000\000\124\000\000\000\145\000\000\000\163\000\000\000\164\000\000\000\040\000\000\004\042\000\000\004\065\000\000\004\101\000\000\004\102"
+
 test_done