diff --git a/src/tests.asm b/src/tests.asm
index e0b0c9b..0f57d5f 100644
--- a/src/tests.asm
+++ b/src/tests.asm
@@ -197,6 +197,20 @@ section .rodata
 	addTest(clampu2, "clampu(0, 1, 1000)")
 	addTest(clampu3, "clampu(1337, 1, 1000)")
 	addTest(clampu4, "clampu(MAX_UINT64, 0, MAX_UINT32)")
+	;print()
+	addTestHeader(_print, "print")
+	addTest(print1, "print(''Hello, world!\n'')")
+	printStr	db	"Hello, world!",NL,EOS
+	;puts()
+	addTestHeader(_puts, "puts")
+	addTest(puts1, "puts(''Howdy, environment!''")
+	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%' => 20 (+1 for NL) (yes, aware of the fact that '%0'  is printed as '0' at the time of writing)
+	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
 
 section .data
 
@@ -521,6 +535,55 @@ _start:
 	assert_u_eq(MAX_UINT32)
 %endif
 
+;--- print()
+%if TEST_print
+	printTestHeader(_print)
+
+	lea	rdi, [rel printStr]
+	call	print
+	assert_eq(14)
+%endif
+
+;--- puts()
+%if TEST_puts
+	printTestHeader(_puts)
+
+	lea	rdi, [rel putsStr]
+	call	puts
+	assert_eq(20)
+%endif
+
+;--- printf()
+%if TEST_printf
+	printTestHeader(_printf)
+
+	; TEST 1 (some invalid specifiers/characters)
+	printTest(printf_invalid)
+	lea	rdi, [rel printfStr1]
+	xor	rsi, rsi
+	xor	rdx, rdx
+	xor	rcx, rcx
+	call	printf
+	assert_eq(21)
+
+	; TEST 2 (print hexadecimal numbers in multiple possible ways)
+	printTest(printf_hexpadd)
+	lea	rdi, [rel printfStr2]
+	mov	rsi, 80181775710
+	mov	rdx, rsi
+	mov	rcx, rsi
+	mov	r8, rsi
+	mov	r9, rsi
+	push	rsi
+	push	rsi
+	push	rsi
+	push	rsi
+	push	rsi
+	call	printf
+	add	rsp, SIZE_QWORD * 5
+	assert_eq(174) ;8*16(%[#][0]16(x|X)) + (8*3( | ) + 20 (2x %x) + 2 (NL) => 174
+%endif
+
 ;;;
 ;;; TEST RESULTS
 ;;;