diff --git a/SLS_C/include/tests/tests.h b/SLS_C/include/tests/tests.h
index a9933a9..023330a 100644
--- a/SLS_C/include/tests/tests.h
+++ b/SLS_C/include/tests/tests.h
@@ -8,6 +8,8 @@
 
 #include <stdint.h>
 
+const char *TEST_FILE_NAME = "TEST_FILE.SLS";
+
 typedef struct {
     const char *name;
     uint8_t success;
@@ -15,7 +17,7 @@ typedef struct {
 
 typedef struct {
     const char *section;
-    size_t tests;
+    size_t count;
     TestResult* tests;
 } TestsReport;
 
diff --git a/SLS_C/tests/lexer_tests.c b/SLS_C/tests/lexer_tests.c
index af92fce..548c61a 100644
--- a/SLS_C/tests/lexer_tests.c
+++ b/SLS_C/tests/lexer_tests.c
@@ -3,4 +3,51 @@
 // Lexer Tests
 // October 2025
 
+#include <stdlib.h>
+#include <stdint.h>
 
+#include "sls/sls_errors.h"
+#include "sls/lexer.h"
+#include "tests/tests.h"
+
+static const size_t NUM_OF_TESTS = 1;
+
+static LexerInfo start_up_test(const char *code) {
+    LexerInfo lexer_info;
+    lexer_init(&lexer_info, TEST_FILE_NAME, code);
+    return lexer_info;
+}
+
+static void clean_up_test(LexerResult result) {
+    if (result.type == SLS_RESULT)
+        clean_token_result(result.result);
+}
+
+static TestResult test_add_statement() {
+    TestResult test_result = (TestResult){ .name = "test_add_statement", .success = 0 };
+    LexerInfo lexer_info = start_up_test("3 4 +");
+
+    LexerResult result = lexical_analysis(&lexer_info);
+
+    if (result.type == SLS_ERROR) {
+        clean_up_test(result);
+        return test_result;
+    }
+    // TODO: Finish Test
+
+    clean_up_test(result);
+    test_result.success = 1;
+    return test_result;
+}
+
+TestsReport run_lexer_tests() {
+    TestsReport test_report = (TestsReport){
+        .section = "lexer_tests",
+        .count = NUM_OF_TESTS,
+        .tests = malloc(sizeof(TestResult) * NUM_OF_TESTS),
+    };
+
+    test_report.tests[0] = test_add_statement();
+
+    return test_report;
+}