[PATCH 2/2] Subject:[GSOC] [RFC PATCH 2/2] Add test for JavaScript function detection in Git diffs

[Sergius Nyah <sergiusnyah@gmail.com>]

From: Sergius Justus Chesami Nyah <74214119+Sergius-Nyah@users.noreply.github.com>

This commit introduces a new test case in t4018-diff-funcname.sh to verify the enhanced JavaScript function detection in Git diffs. The test creates a JavaScript file with function declarations and expressions, modifies them, and then checks the output of git diff to ensure that the changes are correctly identified. This test validates the changes made to userdiff.c for improved JavaScript function detection.
---
 t/t4018-diff-funcname.sh | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/t/t4018-diff-funcname.sh b/t/t4018-diff-funcname.sh
index e026fac1f4..e88e63bd1f 100755
--- a/t/t4018-diff-funcname.sh
+++ b/t/t4018-diff-funcname.sh
@@ -11,7 +11,7 @@ test_expect_success 'setup' '
 	# a non-trivial custom pattern
 	git config diff.custom1.funcname "!static
 !String
-[^ 	].*s.*" &&
+[^ 	].*s.*" && 
 
 	# a custom pattern which matches to end of line
 	git config diff.custom2.funcname "......Beer\$" &&
@@ -119,4 +119,25 @@ do
 	"
 done
 
-test_done
+test_expect_success 'identify builtin patterns in Javascript' '
+    # setup
+    echo "function myFunction() { return true; }" > test.js &&
+    echo "var myVar = function() { return false; }" >> test.js &&
+    git add test.js &&
+    git commit -m "add test.js" &&
+
+    # modify the file
+    echo "function myFunction() { return false; }" > test.js &&
+    echo "var myVar = function() { return true; }" >> test.js &&
+
+    # command under test
+    git diff >output &&
+
+    # check results
+    test_i18ngrep "function myFunction() { return true; }" output &&
+    test_i18ngrep "function myFunction() { return false; }" output &&
+    test_i18ngrep "var myVar = function() { return false; }" output &&
+    test_i18ngrep "var myVar = function() { return true; }" output
+'
+
+test_done 
\ No newline at end of file
-- 
2.43.2