apply: test multiple deltas to new file

tests/apply/apply_helpers.h

@@ -277,6 +277,23 @@
 	"-and serve it up.\n" \
 	"+and serve it up!\n"
 
+#define DIFF_TWO_DELTAS_ONE_NEW_FILE \
+	"diff --git a/newfile.txt b/newfile.txt\n" \
+	"new file mode 100644\n" \
+	"index 0000000..6434b13\n" \
+	"--- /dev/null\n" \
+	"+++ b/newfile.txt\n" \
+	"@@ -0,0 +1 @@\n" \
+	"+This is a new file.\n" \
+	"diff --git a/newfile.txt b/newfile.txt\n" \
+	"index 6434b13..08d4c44 100644\n" \
+	"--- a/newfile.txt\n" \
+	"+++ b/newfile.txt\n" \
+	"@@ -1 +1,3 @@\n" \
+	" This is a new file.\n" \
+	"+\n" \
+	"+This is another change to a new file.\n"
+
 struct iterator_compare_data {
 	struct merge_index_entry *expected;
 	size_t cnt;

tests/apply/both.c

@@ -599,3 +599,29 @@ void test_apply_both__two_deltas_one_file(void)
 
 	git_diff_free(diff);
 }
+
+void test_apply_both__two_deltas_one_new_file(void)
+{
+	git_diff *diff;
+
+	struct merge_index_entry both_expected[] = {
+		{ 0100644, "f51658077d85f2264fa179b4d0848268cb3475c3", 0, "asparagus.txt" },
+		{ 0100644, "68f6182f4c85d39e1309d97c7e456156dc9c0096", 0, "beef.txt" },
+		{ 0100644, "4b7c5650008b2e747fe1809eeb5a1dde0e80850a", 0, "bouilli.txt" },
+		{ 0100644, "c4e6cca3ec6ae0148ed231f97257df8c311e015f", 0, "gravy.txt" },
+		{ 0100644, "08d4c445cf0078f3d9b604b82f32f4d87e083325", 0, "newfile.txt" },
+		{ 0100644, "68af1fc7407fd9addf1701a87eb1c95c7494c598", 0, "oyster.txt" },
+		{ 0100644, "94d2c01087f48213bd157222d54edfefd77c9bba", 0, "veal.txt" }
+	};
+	size_t both_expected_cnt = sizeof(both_expected) /
+		sizeof(struct merge_index_entry);
+
+	cl_git_pass(git_diff_from_buffer(&diff, DIFF_TWO_DELTAS_ONE_NEW_FILE,
+		strlen(DIFF_TWO_DELTAS_ONE_NEW_FILE)));
+	cl_git_pass(git_apply(repo, diff, GIT_APPLY_LOCATION_BOTH, NULL));
+
+	validate_apply_index(repo, both_expected, both_expected_cnt);
+	validate_apply_workdir(repo, both_expected, both_expected_cnt);
+
+	git_diff_free(diff);
+}