diff --git a/vlib/builtin/int_test.v b/vlib/builtin/int_test.v
index 7c162f31a9..4cf24b7aeb 100644
--- a/vlib/builtin/int_test.v
+++ b/vlib/builtin/int_test.v
@@ -17,7 +17,11 @@ fn test_str_methods() {
 	assert int(1).str() == '1'
 	assert int(-1).str() == '-1'
 	assert int(2147483647).str() == '2147483647'
-	assert int(u32(2147483648)).str() == '-2147483648'
+	assert int(u32(2147483648)).str() == $if new_int ? && x64 {
+		'2147483648'
+	} $else {
+		'-2147483648'
+	}
 	assert int(-2147483648).str() == '-2147483648'
 	assert i64(1).str() == '1'
 	assert i64(-1).str() == '-1'
diff --git a/vlib/builtin/string_test.v b/vlib/builtin/string_test.v
index ff2d4d7456..3dc3abdc82 100644
--- a/vlib/builtin/string_test.v
+++ b/vlib/builtin/string_test.v
@@ -930,7 +930,11 @@ fn test_hash() {
 	s3 := 'Content-Type'
 	assert s3.hash() == 949037134
 	s4 := 'bad_key'
-	assert s4.hash() == -346636507
+	assert s4.hash() == $if new_int ? && x64 {
+		3948330789
+	} $else {
+		-346636507
+	}
 	s5 := '24640'
 	// From a map collision test
 	assert s5.hash() % ((1 << 20) - 1) == s.hash() % ((1 << 20) - 1)
diff --git a/vlib/math/math_test.v b/vlib/math/math_test.v
index 987b61bc26..3b481c5161 100644
--- a/vlib/math/math_test.v
+++ b/vlib/math/math_test.v
@@ -1118,7 +1118,11 @@ fn test_min_max_int_str() {
 fn test_maxof_minof() {
 	assert maxof[i8]() == 127
 	assert maxof[i16]() == 32767
-	assert maxof[int]() == 2147483647
+	assert maxof[int]() == $if new_int ? && x64 {
+		9223372036854775807
+	} $else {
+		2147483647
+	}
 	assert maxof[i32]() == 2147483647
 	assert maxof[i64]() == 9223372036854775807
 	assert maxof[u8]() == 255
@@ -1130,7 +1134,11 @@ fn test_maxof_minof() {
 
 	assert minof[i8]() == -128
 	assert minof[i16]() == -32768
-	assert minof[int]() == -2147483648
+	assert minof[int]() == $if new_int ? && x64 {
+		-9223372036854775807 - 1
+	} $else {
+		-2147483648
+	}
 	assert minof[i32]() == -2147483648
 	assert minof[i64]() == -9223372036854775807 - 1
 	assert minof[u8]() == 0
diff --git a/vlib/strconv/atoi_test.v b/vlib/strconv/atoi_test.v
index 753acfa166..aaf1e1bf27 100644
--- a/vlib/strconv/atoi_test.v
+++ b/vlib/strconv/atoi_test.v
@@ -83,8 +83,8 @@ fn test_atoi() {
 		StrInt{'123_456_789', 123456789},
 		StrInt{'00000006', 6},
 		StrInt{'0_0_0_0_0_0_0_6', 6},
-		StrInt{'2147483647', max_int},
-		StrInt{'-2147483648', min_int},
+		StrInt{'2147483647', max_i32},
+		StrInt{'-2147483648', min_i32},
 	]
 
 	// Check that extracted int value matches its string.
diff --git a/vlib/v/tests/assign/assign_array_fixed_from_union_test.v b/vlib/v/tests/assign/assign_array_fixed_from_union_test.v
index 0e8bee3b89..f7552ba345 100644
--- a/vlib/v/tests/assign/assign_array_fixed_from_union_test.v
+++ b/vlib/v/tests/assign/assign_array_fixed_from_union_test.v
@@ -1,6 +1,6 @@
 union Convertor {
 	su8_array_p  [20]u8
-	sint_array_p [5]int
+	sint_array_p [5]i32
 }
 
 fn test_main() {
@@ -13,9 +13,17 @@ fn test_main() {
 	assert a == [1, 2, 3, 4, 5]!
 	assert p != 0
 	$if little_endian {
-		assert c == [u8(1), 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0, 5, 0, 0, 0]!
+		$if new_int ? && x64 {
+			assert c == [u8(1), 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0]!
+		} $else {
+			assert c == [u8(1), 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0, 5, 0, 0, 0]!
+		}
 	}
 	$if big_endian {
-		assert c == [u8(0), 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0, 5]!
+		$if new_int ? && x64 {
+			assert c == [u8(0), 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0]!
+		} $else {
+			assert c == [u8(0), 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0, 5]!
+		}
 	}
 }
diff --git a/vlib/v/tests/builtin_arrays/array_fixed_init_node_test.v b/vlib/v/tests/builtin_arrays/array_fixed_init_node_test.v
index 28a5e1829d..4c845a9d79 100644
--- a/vlib/v/tests/builtin_arrays/array_fixed_init_node_test.v
+++ b/vlib/v/tests/builtin_arrays/array_fixed_init_node_test.v
@@ -46,5 +46,9 @@ fn test_main() {
 	path.add(b1)
 	path.add(b2)
 
-	assert sizeof(path) == 32772
+	assert sizeof(path) == $if new_int ? && x64 {
+		32776
+	} $else {
+		32772
+	}
 }
diff --git a/vlib/v/tests/builtin_arrays/static_arrays_using_const_for_size_test.v b/vlib/v/tests/builtin_arrays/static_arrays_using_const_for_size_test.v
index 213ae01570..db3c312b3f 100644
--- a/vlib/v/tests/builtin_arrays/static_arrays_using_const_for_size_test.v
+++ b/vlib/v/tests/builtin_arrays/static_arrays_using_const_for_size_test.v
@@ -3,13 +3,21 @@ const sbuffer_size = 10
 fn test_hardcoded_static_arr() {
 	myints := [10]int{}
 	size := sizeof(myints)
-	assert size == 40
+	assert size == $if new_int ? && x64 {
+		80
+	} $else {
+		40
+	}
 }
 
 fn test_const_based_static_arr() {
 	myints := [sbuffer_size]int{}
 	size := sizeof(myints)
-	assert size == 40
+	assert size == $if new_int ? && x64 {
+		80
+	} $else {
+		40
+	}
 }
 
 fn test_const_based_static_arr_of_f64() {
diff --git a/vlib/v/tests/c_array_test.c.v b/vlib/v/tests/c_array_test.c.v
index 34b875e6f9..19ca8b4f99 100644
--- a/vlib/v/tests/c_array_test.c.v
+++ b/vlib/v/tests/c_array_test.c.v
@@ -17,7 +17,7 @@ fn test_carray_to_varray() {
 	}
 
 	c_int_array := C.gen_c_int_array(size)
-	v_int_array := unsafe { arrays.carray_to_varray[int](c_int_array, size) }
+	v_int_array := unsafe { arrays.carray_to_varray[i32](c_int_array, size) }
 	unsafe { C.free(c_int_array) }
 	assert v_int_array.len == size
 	for i, elem in v_int_array {
diff --git a/vlib/v/tests/comptime/comptime_aggregate_var_test.v b/vlib/v/tests/comptime/comptime_aggregate_var_test.v
index 6ba35886cb..424414ddc1 100644
--- a/vlib/v/tests/comptime/comptime_aggregate_var_test.v
+++ b/vlib/v/tests/comptime/comptime_aggregate_var_test.v
@@ -17,9 +17,17 @@ fn d(val Value) string {
 }
 
 fn test_main() {
-	assert d(Value(0)) == 'Value is number or byte array, size=4 0'
+	assert d(Value(0)) == $if new_int ? && x64 {
+		'Value is number or byte array, size=8 0'
+	} $else {
+		'Value is number or byte array, size=4 0'
+	}
 	assert d(Value(i64(1))) == 'Value is number or byte array, size=8 1'
 	assert d(Value(u64(2))) == 'Value is number or byte array, size=8 2'
-	assert d(Value([u8(1), 2])) == 'Value is number or byte array, size=32 [1, 2]'
+	assert d(Value([u8(1), 2])) == $if new_int ? && x64 {
+		'Value is number or byte array, size=48 [1, 2]'
+	} $else {
+		'Value is number or byte array, size=32 [1, 2]'
+	}
 	assert d(Value('')) == 'Value is string: '
 }
diff --git a/vlib/v/tests/fns/fixed_array_on_voidptr_test.v b/vlib/v/tests/fns/fixed_array_on_voidptr_test.v
index 21d49d5c36..f112629257 100644
--- a/vlib/v/tests/fns/fixed_array_on_voidptr_test.v
+++ b/vlib/v/tests/fns/fixed_array_on_voidptr_test.v
@@ -2,7 +2,7 @@ fn test_main() {
 	mut b := [2]int{}
 	b[0] = 1
 	b[1] = 2
-	mut a := unsafe { memdup(b, 8) }
+	mut a := unsafe { memdup(b, $if new_int ? && x64 { 16 } $else { 8 }) }
 	x := &int(a)
 	unsafe {
 		assert x[0] == 1
diff --git a/vlib/v/tests/generics/generics_fn_variable_2_test.v b/vlib/v/tests/generics/generics_fn_variable_2_test.v
index e63e07711b..7715b0b630 100644
--- a/vlib/v/tests/generics/generics_fn_variable_2_test.v
+++ b/vlib/v/tests/generics/generics_fn_variable_2_test.v
@@ -10,12 +10,20 @@ fn f[T]() u32 {
 fn test_generic_fn_variable() {
 	r1 := f[int]()
 	println(r1)
-	assert r1 == 4
+	assert r1 == $if new_int ? && x64 {
+		8
+	} $else {
+		4
+	}
 
 	r2 := f[string]()
 	println(r2)
 	assert r2 == $if x64 {
-		16
+		$if new_int ? {
+			24
+		} $else {
+			16
+		}
 	} $else {
 		12
 	}
diff --git a/vlib/v/tests/sizeof_2_test.v b/vlib/v/tests/sizeof_2_test.v
index fb7fbf498b..04e009cbf7 100644
--- a/vlib/v/tests/sizeof_2_test.v
+++ b/vlib/v/tests/sizeof_2_test.v
@@ -4,5 +4,9 @@ fn getsize[P]() u32 {
 
 fn test_sizeof_2() {
 	assert getsize[f64]() == 8
-	assert 4 == getsize[int]()
+	$if new_int ? && x64 {
+		assert 8 == getsize[int]()
+	} $else {
+		assert 4 == getsize[int]()
+	}
 }
diff --git a/vlib/v/tests/sizeof_test.v b/vlib/v/tests/sizeof_test.v
index 98f2d9b330..4736429839 100644
--- a/vlib/v/tests/sizeof_test.v
+++ b/vlib/v/tests/sizeof_test.v
@@ -10,7 +10,7 @@ struct S2 {
 }
 
 fn test_math_sizeof() {
-	r := math.f32_from_bits(sizeof(int))
+	r := math.f32_from_bits(sizeof(i32))
 	assert f64(r) > 5.6e-45 && f64(r) < 5.7e-45
 }
 
@@ -21,17 +21,29 @@ fn test_sizeof() {
 	// depends on -m32/64
 	assert sizeof(S1) in [u32(4), 8]
 	s := S2{}
-	assert sizeof(s.i) == 4
+	assert sizeof(s.i) == $if new_int ? && x64 {
+		8
+	} $else {
+		4
+	}
 	assert sizeof(flag.Flag) > 4
 
 	assert sizeof(c'hello') == 6
 	assert sizeof(r'hello') == $if x64 {
-		16
+		$if new_int ? {
+			24
+		} $else {
+			16
+		}
 	} $else {
 		12
 	}
 	assert sizeof('hello') == $if x64 {
-		16
+		$if new_int ? {
+			24
+		} $else {
+			16
+		}
 	} $else {
 		12
 	}
diff --git a/vlib/v/tests/structs/struct_generic_sizeof_test.v b/vlib/v/tests/structs/struct_generic_sizeof_test.v
index 63f19f1501..1fe6372534 100644
--- a/vlib/v/tests/structs/struct_generic_sizeof_test.v
+++ b/vlib/v/tests/structs/struct_generic_sizeof_test.v
@@ -8,10 +8,17 @@ mut:
 
 fn test_main() {
 	x := PaddedSlot[int]{}
-	assert '${x}' == 'PaddedSlot[int]{
+	$if new_int ? && x64 {
+		assert '${x}' == 'PaddedSlot[int]{
+    data: 0
+    pad: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+}'
+	} $else {
+		assert '${x}' == 'PaddedSlot[int]{
     data: 0
     pad: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
 }'
+	}
 	x2 := PaddedSlot[u8]{}
 	assert '${x2}' == 'PaddedSlot[u8]{
     data: 0
diff --git a/vlib/v/tests/unsigned_right_shift_test.v b/vlib/v/tests/unsigned_right_shift_test.v
index b64df5890b..a55aac5a71 100644
--- a/vlib/v/tests/unsigned_right_shift_test.v
+++ b/vlib/v/tests/unsigned_right_shift_test.v
@@ -18,7 +18,11 @@ fn test_unsigned_right_shift_expr_isize_usize() {
 fn test_unsigned_right_shift_expr() {
 	assert i64(-5) >>> 1 == answer_u64
 	assert -5 >>> 1 == answer_u32 // because int literal's size defaults to int's size, without an explicit cast
-	assert int(-5) >>> 1 == answer_u32
+	$if new_int ? && x64 {
+		assert int(-5) >>> 1 == answer_u64
+	} $else {
+		assert int(-5) >>> 1 == answer_u32
+	}
 	assert i16(-5) >>> 1 == answer_u16
 	assert i8(-5) >>> 1 == answer_u8
 }
@@ -29,6 +33,11 @@ fn test_unsigned_right_shift_assignment() {
 	y >>>= 1
 	z >>>= 1
 	assert x == answer_u64
-	assert y == answer_u32
-	assert z == answer_u32
+	$if new_int ? && x64 {
+		assert y == answer_u64
+		assert z == answer_u64
+	} $else {
+		assert y == answer_u32
+		assert z == answer_u32
+	}
 }