diff --git a/Makefile b/Makefile
index c58b895..0f04da9 100644
--- a/Makefile
+++ b/Makefile
@@ -6,8 +6,9 @@ CFLAGS :=
 YACC := bison
 
 TESTS-S1 := $(wildcard tests/sprint1/test/*.alpha)
-TESTS-S3 := $(wildcard tests/sprint3/test/*.alpha)
 TESTS-S2 := $(wildcard tests/sprint2/test/*.alpha)
+TESTS-S3 := $(wildcard tests/sprint3/test/*.alpha)
+TESTS-S4 := $(wildcard tests/sprint4/test/*.alpha)
 
 compiler: clean runner
 
@@ -33,22 +34,38 @@ runner: tmp/lex.yy.c tmp/runner.o tmp/symbol_table.o
 debug: CFLAGS += -DDEBUG=1
 debug: clean compiler
 
-test: test-s1 test-s2 test-s3
+test:
+	chmod +x ./check.sh
+	chmod +x ./test.sh
+	$(foreach test, $(TESTS-S1), (./$(EXE) -tok $(test) || true);)
+	./test.sh sp2
+	./test.sh sp3
+	./test.sh sp4
+	./check.sh
 
 test-s1:
 	chmod +x ./check.sh
-	for test in $(TESTS-S1); do ./$(EXE) -tok $$test || echo "Test $$test failed but continuing"; done
-	./check.sh
+	chmod +x ./test.sh
+	$(foreach test, $(TESTS-S1), (./$(EXE) -tok $(test) || true);)
+	./check.sh sp1
 
 test-s2:
 	chmod +x ./check.sh
-	for test in $(TESTS-S2); do ./$(EXE) -st $$test || echo "Test $$test failed but continuing"; done
-	./check.sh
+	chmod +x ./test.sh
+	./test.sh sp2
+	./check.sh sp2
 
 test-s3:
 	chmod +x ./check.sh
-	for test in $(TESTS-S3); do ./$(EXE) -st $$test || echo "Test $$test failed but continuing"; done
-	./check.sh
+	chmod +x ./test.sh
+	./test.sh sp3
+	./check.sh sp3
+
+test-s4:
+	chmod +x ./check.sh
+	chmod +x ./test.sh
+	./test.sh sp4
+	./check.sh sp4
 
 clean:
 	rm -f *.o
diff --git a/check.sh b/check.sh
index f325421..bac18ec 100755
--- a/check.sh
+++ b/check.sh
@@ -5,34 +5,61 @@
 #     The Translators - Spring 2025     #
 
 TOK_DIR="out"
+NOCOLOR='\033[0m'
 RED='\033[0;31m'
 GREEN='\033[0;32m'
-WHITE='\033[0m'
-PURPLE='\033[0;35m'
 ORANGE='\033[0;33m'
+BLUE='\033[0;34m'
+PURPLE='\033[0;35m'
+CYAN='\033[0;36m'
+LIGHTGRAY='\033[0;37m'
+DARKGRAY='\033[1;30m'
+LIGHTRED='\033[1;31m'
+LIGHTGREEN='\033[1;32m'
+YELLOW='\033[1;33m'
+LIGHTBLUE='\033[1;34m'
+LIGHTPURPLE='\033[1;35m'
+LIGHTCYAN='\033[1;36m'
+WHITE='\033[1;37m'
+
+compare_files() {
+    local file="$1"
+    local filename=$(basename -- "$file")
+    filename="${filename%.*}"
+    local num=${filename:2:1}
+    local exp="./tests/sprint$num/expected/$filename.expected"
+
+    if [[ -f "$exp" ]]; then
+        diff -q "$file" "$exp" > /dev/null
+        if [[ $? -eq 0 ]]; then
+            echo -e "${GREEN}[✔] ${PURPLE}$filename ${WHITE}passed.${NOCOLOR}"
+        else
+            echo -e "\n${RED}[✘] ${PURPLE}$file ${WHITE}failed with an unexpected value...${NOCOLOR}"
+            diff --color=always "$file" "$exp"
+            echo -e ""
+        fi
+    else
+        echo -e "${ORANGE}[-] ${PURPLE}$filename ${WHITE}does not have an expected value.${NOCOLOR}"
+    fi
+}
 
 if [[ ! -d "$TOK_DIR" ]]; then
-    echo "Directory $TOK_DIR does not exist."
+    echo -e "${RED}[ERROR] ${YELLOW}Directory $TOK_DIR does not exist.${NOCOLOR}"
     exit 1
 fi
 
-echo -e "\n"
-for file in "$TOK_DIR"/*; do
-    filename=$(basename -- "$file")
-    filename="${filename%.*}"
-	num=${filename:2:1}
-	exp="./tests/sprint$num/expected/$filename.expected"
-
-	if [[ -f "$exp" ]]; then
-		diff -q "$file" "$exp" > /dev/null
-		if [[ $? -eq 0 ]]; then
-			echo -e "${GREEN}[✔] ${PURPLE}$filename ${WHITE}passed."
-		else
-			echo -e "\n${RED}[✘] ${PURPLE}$file ${WHITE}failed with an unexpected value..."
-			diff --color=always "$file" "$exp"
-			echo -e ""
-		fi
-	else
-		echo -e "${ORANGE}[-] ${PURPLE}$filename ${WHITE}does not have an expected value."
-	fi
-done
\ No newline at end of file
+if [[ $# -eq 0 ]]; then
+    for file in "$TOK_DIR"/*; do
+        compare_files "$file"
+    done
+elif [[ $# -eq 1 ]]; then
+    prefix="$1"
+    for file in "$TOK_DIR"/"$prefix"*; do
+        if [[ -f "$file" ]]; then
+            compare_files "$file"
+        fi
+    done
+else
+    echo -e "${LIGHTBLUE}Usage: $0 [sp#]${NOCOLOR}"
+    exit 1
+fi
\ No newline at end of file
diff --git a/src/symbol_table.c b/src/symbol_table.c
index e8e1868..26d8798 100644
--- a/src/symbol_table.c
+++ b/src/symbol_table.c
@@ -1001,4 +1001,4 @@ TableNode *getNextEntry(TableNode *tn) { return tn->next; }
    printf("The type of the first entry is %s\n",First_Entry->theType);
    return 0;
    }
-   */
+   */
\ No newline at end of file
diff --git a/test.sh b/test.sh
new file mode 100755
index 0000000..e35809e
--- /dev/null
+++ b/test.sh
@@ -0,0 +1,166 @@
+#!/bin/bash
+
+#              Test Tool                #
+#     The Translators - Spring 2025     #
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+ORANGE='\033[0;33m'
+BLUE='\033[0;34m'
+PURPLE='\033[0;35m'
+CYAN='\033[0;36m'
+LIGHTGRAY='\033[0;37m'
+DARKGRAY='\033[1;30m'
+LIGHTRED='\033[1;31m'
+LIGHTGREEN='\033[1;32m'
+YELLOW='\033[1;33m'
+LIGHTBLUE='\033[1;34m'
+LIGHTPURPLE='\033[1;35m'
+LIGHTCYAN='\033[1;36m'
+WHITE='\033[1;37m'
+
+if [ ! -f "./alpha" ]; then
+	echo -e "${RED}[ERROR] ${YELLOW}File ./alpha not found!${WHITE}"
+	exit 1
+fi
+
+if [ ! -d "./out" ]; then
+	mkdir -p out
+fi
+
+SWITCH=${YELLOW}
+count=0
+
+switchfunc() {
+	if [ $count -eq 0 ]; then
+		count=1
+		SWITCH=${YELLOW}
+	else
+		count=0
+		SWITCH='\033[0;35m'
+	fi
+}
+
+if [ $# -eq 0 ]; then
+	echo -e "${YELLOW}[INFO] ${WHITE}Running all tests...${WHITE}"
+	echo -e "${YELLOW}[INFO] ${ORANGE}Testing SPRINT-1 ---------------------------\n${WHITE}"
+	for file in ./tests/sprint1/test/*; do
+		if [ -f "$file" ]; then
+			filename=$(basename -- "$file")
+			echo -e "- ${SWITCH}Running test: ${LIGHTBLUE}$filename ${SWITCH}-----${WHITE}"
+			./alpha -st "$file"
+			echo -e "${SWITCH}----- End of test: ${LIGHTBLUE}$filename ${SWITCH}-${WHITE}\n"
+			switchfunc
+		fi
+	done
+	echo -e ""
+
+	echo -e "${YELLOW}[INFO] ${ORANGE}Testing SPRINT-2 ---------------------------\n${WHITE}"
+	for file in ./tests/sprint2/test/*; do
+		if [ -f "$file" ]; then
+			filename=$(basename -- "$file")
+			echo -e "- ${SWITCH}Running test: ${LIGHTBLUE}$filename ${SWITCH}-----${WHITE}"
+			./alpha -st "$file"
+			echo -e "${SWITCH}----- End of test: ${LIGHTBLUE}$filename ${SWITCH}-${WHITE}\n"
+			switchfunc
+		fi
+	done
+	echo -e ""
+
+	echo -e "${YELLOW}[INFO] ${ORANGE}Testing SPRINT-3 ---------------------------\n${WHITE}"
+	for file in ./tests/sprint3/test/*; do
+		if [ -f "$file" ]; then
+			filename=$(basename -- "$file")
+			echo -e "- ${SWITCH}Running test: ${LIGHTBLUE}$filename ${SWITCH}-----${WHITE}"
+			./alpha -st "$file"
+			echo -e "${SWITCH}----- End of test: ${LIGHTBLUE}$filename ${SWITCH}-${WHITE}\n"
+			switchfunc
+		fi
+	done
+	echo -e ""
+
+	echo -e "${YELLOW}[INFO] ${ORANGE}Testing SPRINT-4 ---------------------------\n${WHITE}"
+	for file in ./tests/sprint4/test/*; do
+		if [ -f "$file" ]; then
+			filename=$(basename -- "$file")
+			echo -e "- ${SWITCH}Running test: ${LIGHTBLUE}$filename ${SWITCH}-----${WHITE}"
+			./alpha -st "$file"
+			echo -e "${SWITCH}----- End of test: ${LIGHTBLUE}$filename ${SWITCH}-${WHITE}\n${WHITE}"
+			switchfunc
+		fi
+	done
+
+else
+	if [ "$1" == "--help" ]; then
+		echo -e "${YELLOW}[INFO] ${WHITE}Usage: ./test.sh [prefix]"
+		echo -e "${YELLOW}[INFO] ${WHITE}--help: show this help message"
+		echo -e "${YELLOW}[INFO] ${WHITE}--file <file>: run test with file"
+		exit 0
+	fi
+	if [[ "$1" == "--file" ]]; then
+		shift
+		if [ $# -eq 0 ]; then
+			echo -e "${RED}[ERROR] ${YELLOW}No file specified!${WHITE}"
+			exit 1
+		fi
+		if [ -f "$1" ]; then
+			filename=$(basename -- "$1")
+			echo -e "- ${SWITCH}Running test: ${LIGHTBLUE}$filename ${SWITCH}-----${WHITE}"
+			./alpha -st "$1"
+			echo -e "${SWITCH}----- End of test: ${LIGHTBLUE}$filename ${SWITCH}-${WHITE}"
+			exit 1
+		else
+			echo -e "${RED}[ERROR] ${YELLOW}File $1 not found!${WHITE}"
+			exit 1
+		fi
+	fi
+
+	if [[ "$1" == "sp1" ]]; then
+		echo -e "${YELLOW}[INFO] ${WHITE}Running tests with prefix $1..."
+		for file in ./tests/sprint1/test/*; do
+			if [[ "$file" == *"$1"* ]]; then
+				filename=$(basename -- "$file")
+				echo -e "- ${SWITCH}Running test: ${LIGHTBLUE}$filename ${SWITCH}-----${WHITE}"
+				./alpha -st "$file"
+				echo -e "${SWITCH}----- End of test: ${LIGHTBLUE}$filename ${SWITCH}-${WHITE}\n"
+				switchfunc
+			fi
+		done
+	elif [[ "$1" == "sp2" ]]; then
+		echo -e "${YELLOW}[INFO] ${WHITE}Running tests with prefix $1..."
+		for file in ./tests/sprint2/test/*; do
+			if [[ "$file" == *"$1"* ]]; then
+				filename=$(basename -- "$file")
+				echo -e "- ${SWITCH}Running test: ${LIGHTBLUE}$filename ${SWITCH}-----${WHITE}"
+				./alpha -st "$file"
+				echo -e "${SWITCH}----- End of test: ${LIGHTBLUE}$filename ${SWITCH}-${WHITE}\n"
+				switchfunc
+			fi
+		done
+	elif [[ "$1" == "sp3" ]]; then
+		echo -e "${YELLOW}[INFO] ${WHITE}Running tests with prefix $1..."
+		for file in ./tests/sprint3/test/*; do
+			if [[ "$file" == *"$1"* ]]; then
+				filename=$(basename -- "$file")
+				echo -e "- ${SWITCH}Running test: ${LIGHTBLUE}$filename ${SWITCH}-----${WHITE}"
+				./alpha -st "$file"
+				echo -e "${SWITCH}----- End of test: ${LIGHTBLUE}$filename ${SWITCH}-${WHITE}\n"
+				switchfunc
+			fi
+		done
+	elif [[ "$1" == "sp4" ]]; then
+		echo -e "${YELLOW}[INFO] ${WHITE}Running tests with prefix $1..."
+		for file in ./tests/sprint4/test/*; do
+			if [[ "$file" == *"$1"* ]]; then
+				filename=$(basename -- "$file")
+				echo -e "- ${SWITCH}Running test: ${LIGHTBLUE}$filename ${SWITCH}-----${WHITE}"
+				./alpha -st "$file"
+				echo -e "${SWITCH}----- End of test: ${LIGHTBLUE}$filename ${SWITCH}-${WHITE}\n"
+				switchfunc
+			fi
+		done
+	else
+		echo -e "${RED}[ERROR] ${YELLOW}Invalid prefix $1!${WHITE}"
+		exit 1
+	fi
+fi
\ No newline at end of file
diff --git a/tests/sprint2/test/test_carls_mistake.alpha b/tests/sprint2/test/sp2_carls_mistake.alpha
similarity index 100%
rename from tests/sprint2/test/test_carls_mistake.alpha
rename to tests/sprint2/test/sp2_carls_mistake.alpha
diff --git a/tests/sprint2/test/test_invalid_recop.alpha b/tests/sprint2/test/sp2_invalid_recop.alpha
similarity index 100%
rename from tests/sprint2/test/test_invalid_recop.alpha
rename to tests/sprint2/test/sp2_invalid_recop.alpha
diff --git a/tests/sprint2/test/test_invalid_release.alpha b/tests/sprint2/test/sp2_invalid_release.alpha
similarity index 100%
rename from tests/sprint2/test/test_invalid_release.alpha
rename to tests/sprint2/test/sp2_invalid_release.alpha
diff --git a/tests/sprint2/test/test_valid_assignable_and_mem.alpha b/tests/sprint2/test/sp2_valid_assignable_and_mem.alpha
similarity index 100%
rename from tests/sprint2/test/test_valid_assignable_and_mem.alpha
rename to tests/sprint2/test/sp2_valid_assignable_and_mem.alpha