1 files changed, 58 insertions, 6 deletions
diff --git a/t/t4051-diff-function-context.sh b/t/t4051-diff-function-context.sh
index 3df24f2ef2..4838a1df8b 100755
--- a/t/t4051-diff-function-context.sh
+++ b/t/t4051-diff-function-context.sh
@@ -64,11 +64,31 @@ test_expect_success 'setup' '
 
 	grep -v "Begin of second part" <file.c >file.c.new &&
 	mv file.c.new file.c &&
-	commit_and_tag long_common_tail file.c
+	commit_and_tag long_common_tail file.c &&
+
+	git checkout initial &&
+	cat "$dir/hello.c" "$dir/dummy.c" >file.c &&
+	commit_and_tag hello_dummy file.c &&
+
+	# overlap function context of 1st change and -u context of 2nd change
+	grep -v "delete me from hello" <"$dir/hello.c" >file.c &&
+	sed "2a\\
+	     extra line" <"$dir/dummy.c" >>file.c &&
+	commit_and_tag changed_hello_dummy file.c &&
+
+	git checkout initial &&
+	grep -v "delete me from hello" <file.c >file.c.new &&
+	mv file.c.new file.c &&
+	cat "$dir/appended1.c" >>file.c &&
+	commit_and_tag changed_hello_appended file.c
 '
 
 check_diff changed_hello 'changed function'
 
+test_expect_success ' context includes comment' '
+	grep "^ .*Hello comment" changed_hello.diff
+'
+
 test_expect_success ' context includes begin' '
 	grep "^ .*Begin of hello" changed_hello.diff
 '
@@ -85,7 +105,7 @@ test_expect_success ' context does not include preceding empty lines' '
 	test "$(first_context_line <changed_hello.diff)" != " "
 '
 
-test_expect_failure ' context does not include trailing empty lines' '
+test_expect_success ' context does not include trailing empty lines' '
 	test "$(last_context_line <changed_hello.diff)" != " "
 '
 
@@ -103,7 +123,7 @@ test_expect_success ' context does not include other functions' '
 	test $(grep -c "^[ +-].*Begin" changed_includes.diff) -le 1
 '
 
-test_expect_failure ' context does not include trailing empty lines' '
+test_expect_success ' context does not include trailing empty lines' '
 	test "$(last_context_line <changed_includes.diff)" != " "
 '
 
@@ -117,7 +137,7 @@ test_expect_success ' context includes end' '
 	grep "^[+].*End of first part" appended.diff
 '
 
-test_expect_failure ' context does not include other functions' '
+test_expect_success ' context does not include other functions' '
 	test $(grep -c "^[ +-].*Begin" appended.diff) -le 1
 '
 
@@ -131,7 +151,7 @@ test_expect_success ' context includes end' '
 	grep "^[+].*End of second part" extended.diff
 '
 
-test_expect_failure ' context does not include other functions' '
+test_expect_success ' context does not include other functions' '
 	test $(grep -c "^[ +-].*Begin" extended.diff) -le 2
 '
 
@@ -145,7 +165,7 @@ test_expect_success ' context includes begin' '
 	grep "^ .*Begin of first part" long_common_tail.diff
 '
 
-test_expect_failure ' context includes end' '
+test_expect_success ' context includes end' '
 	grep "^ .*End of second part" long_common_tail.diff
 '
 
@@ -157,4 +177,36 @@ test_expect_success ' context does not include preceding empty lines' '
 	test "$(first_context_line <long_common_tail.diff)" != " "
 '
 
+check_diff changed_hello_appended 'changed function plus appended function'
+
+test_expect_success ' context includes begin' '
+	grep "^ .*Begin of hello" changed_hello_appended.diff &&
+	grep "^[+].*Begin of first part" changed_hello_appended.diff
+'
+
+test_expect_success ' context includes end' '
+	grep "^ .*End of hello" changed_hello_appended.diff &&
+	grep "^[+].*End of first part" changed_hello_appended.diff
+'
+
+test_expect_success ' context does not include other functions' '
+	test $(grep -c "^[ +-].*Begin" changed_hello_appended.diff) -le 2
+'
+
+check_diff changed_hello_dummy 'changed two consecutive functions'
+
+test_expect_success ' context includes begin' '
+	grep "^ .*Begin of hello" changed_hello_dummy.diff &&
+	grep "^ .*Begin of dummy" changed_hello_dummy.diff
+'
+
+test_expect_success ' context includes end' '
+	grep "^ .*End of hello" changed_hello_dummy.diff &&
+	grep "^ .*End of dummy" changed_hello_dummy.diff
+'
+
+test_expect_success ' overlapping hunks are merged' '
+	test $(grep -c "^@@" changed_hello_dummy.diff) -eq 1
+'
+
 test_done