From 1f548fddf5087eef18728a5c387ac62f0d297f6e Mon Sep 17 00:00:00 2001
From: Kwarde <kevin@kwarde.com>
Date: Thu, 24 Jul 2025 21:09:07 +0200
Subject: [PATCH] Add tests for strlen

---
 src/tests.asm | 64 ++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 61 insertions(+), 3 deletions(-)

diff --git a/src/tests.asm b/src/tests.asm
index 15760df..b14ce17 100644
--- a/src/tests.asm
+++ b/src/tests.asm
@@ -228,14 +228,26 @@ section .rodata
 	putsStr		db	"Howdy, environment!",EOS
 	;printf()
 	addTestHeader(_printf, "printf")
-	addTest(printf_invalid, "printf(''H%ell%0 T\\%t\he%%%re%\n'')") ;=> Should be 'H%ell%0 T\\%t\he%%re%' => 21 (+1 for NL) (yes, aware of the fact that '%0'  is printed as '0' at the time of writing)
+	addTest(printf_invalid, "printf(''H%ell%0 T\\%t\he%%%re%\n'')") ;'H%ell%0 T\\%t\he%%re%' => 21 (+1 for NL)
 	printfStr1	db	"H%ell%0 T\\%t\he%%%re%\n",EOS
 	addTest(printf_hexpadd, "printf(''%x | %16x | %016x | %#16x | %#016x\n%X | %016X | %16X | %#016X | %#16X\n'', 80181775710, [... same arg 9 more times])")
 	printfStr2	db	"%x | %16x | %016x | %#16x | %#016x\n%X | %016X | %16X | %#016X | %#16X\n",EOS
 	addTest(printf_ppadd, "printf(''%p | %16p | %016p | %#16p | %#016p\n%p | %016p | %16p | %#016p | %#16p\n'', 80181775710, [... same arg 9 more times])")
 	printfStr3	db	"%p | %16p | %016p | %#16p | %#016p\n%p | %016p | %16p | %#016p | %#16p\n",EOS
-
-section .data
+	; STRINGS FOR USE IN STRING FUNCTIOns
+	str1		db	"Hello, World!",EOS;13
+	str2		db	"Hello, world!",EOS;13
+	str3		db	"Hello World!",EOS;12
+	str4		db	"Howdy environment!",EOS;18
+	str5		db	"The quick brown fox jumps over the lazy dog",EOS;23
+	printStrs	db	"\n### Strings for string functions ###\nstr1: %s\nstr2: %s\nstr3: %s\nstr4: %s\nstr5: %s\n",EOS
+	;strlen()
+	addTestHeader(_strlen, "strlen")
+	addTest(strlen1, "strlen(str1)")
+	addTest(strlen2, "strlen(str2)")
+	addTest(strlen3, "strlen(str3)")
+	addTest(strlen4, "strlen(str4)")
+	addTest(strlen5, "strlen(str5)")
 
 section .bss
 
@@ -678,6 +690,52 @@ _start:
 	assert_eq(178) ;Len of TEST 2 + 4 (since %p always uses prefix 0x, this test has that two times extra => 4 chars)
 %endif
 
+;;;
+;;; STRINGS FOR STRING FUNCTIONS
+;;;
+	lea	rdi, [rel printStrs]
+	lea	rsi, [rel str1]
+	lea	rdx, [rel str2]
+	lea	rcx, [rel str3]
+	lea	r8, [rel str4]
+	lea	r9, [rel str5]
+	call	printf
+
+;--- strlen()
+%if TEST_strlen
+	printTestHeader(_strlen)
+
+	; TEST 1: strlen(str1)
+	printTest(strlen1)
+	lea	rdi, [rel str1]
+	call	strlen
+	assert_eq(13)
+
+	; TEST 2: strlen(str2)
+	printTest(strlen2)
+	lea	rdi, [rel str2]
+	call	strlen
+	assert_eq(13)
+
+	; TEST 3: strlen(str3)
+	printTest(strlen3)
+	lea	rdi, [rel str3]
+	call	strlen
+	assert_eq(12)
+
+	; TEST 4: strlen(str4)
+	printTest(strlen4)
+	lea	rdi, [rel str4]
+	call	strlen
+	assert_eq(18)
+
+	; TEST 5: strlen(str5)
+	printTest(strlen5)
+	lea	rdi, [rel str5]
+	call	strlen
+	assert_eq(43)
+%endif
+
 ;;;
 ;;; TEST RESULTS
 ;;;