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-rw-r--r--src/integer/tests.rs336
1 files changed, 336 insertions, 0 deletions
diff --git a/src/integer/tests.rs b/src/integer/tests.rs
new file mode 100644
index 0000000..dc8c861
--- /dev/null
+++ b/src/integer/tests.rs
@@ -0,0 +1,336 @@
+use std::fmt::{Debug, Display};
+use crate::{
+ FromIntegerLiteral, Literal, IntegerLit, IntegerType as Ty, IntegerBase, IntegerBase::*,
+ test_util::assert_parse_ok_eq,
+};
+
+
+// ===== Utility functions =======================================================================
+
+#[track_caller]
+fn check<T: FromIntegerLiteral + PartialEq + Debug + Display>(
+ input: &str,
+ value: T,
+ base: IntegerBase,
+ main_part: &str,
+ type_suffix: Option<Ty>,
+) {
+ let expected_integer = IntegerLit { base, main_part, type_suffix };
+ assert_parse_ok_eq(
+ input, IntegerLit::parse(input), expected_integer.clone(), "IntegerLit::parse");
+ assert_parse_ok_eq(
+ input, Literal::parse(input), Literal::Integer(expected_integer), "Literal::parse");
+
+ let actual_value = IntegerLit::parse(input)
+ .unwrap()
+ .value::<T>()
+ .unwrap_or_else(|| panic!("unexpected overflow in `IntegerLit::value` for `{}`", input));
+ if actual_value != value {
+ panic!(
+ "Parsing int literal `{}` should give value `{}`, but actually resulted in `{}`",
+ input,
+ value,
+ actual_value,
+ );
+ }
+}
+
+
+// ===== Actual tests ===========================================================================
+
+#[test]
+fn parse_decimal() {
+ check("0", 0u128, Decimal, "0", None);
+ check("1", 1u8, Decimal, "1", None);
+ check("8", 8u16, Decimal, "8", None);
+ check("9", 9u32, Decimal, "9", None);
+ check("10", 10u64, Decimal, "10", None);
+ check("11", 11i8, Decimal, "11", None);
+ check("123456789", 123456789i128, Decimal, "123456789", None);
+
+ check("05", 5i16, Decimal, "05", None);
+ check("00005", 5i32, Decimal, "00005", None);
+ check("0123456789", 123456789i64, Decimal, "0123456789", None);
+
+ check("123_456_789", 123_456_789, Decimal, "123_456_789", None);
+ check("0___4", 4, Decimal, "0___4", None);
+ check("0___4_3", 43, Decimal, "0___4_3", None);
+ check("0___4_3", 43, Decimal, "0___4_3", None);
+ check("123___________", 123, Decimal, "123___________", None);
+
+ check(
+ "340282366920938463463374607431768211455",
+ 340282366920938463463374607431768211455u128,
+ Decimal,
+ "340282366920938463463374607431768211455",
+ None,
+ );
+ check(
+ "340_282_366_920_938_463_463_374_607_431_768_211_455",
+ 340282366920938463463374607431768211455u128,
+ Decimal,
+ "340_282_366_920_938_463_463_374_607_431_768_211_455",
+ None,
+ );
+ check(
+ "3_40_282_3669_20938_463463_3746074_31768211_455___",
+ 340282366920938463463374607431768211455u128,
+ Decimal,
+ "3_40_282_3669_20938_463463_3746074_31768211_455___",
+ None,
+ );
+}
+
+#[test]
+fn parse_binary() {
+ check("0b0", 0b0, Binary, "0", None);
+ check("0b000", 0b000, Binary, "000", None);
+ check("0b1", 0b1, Binary, "1", None);
+ check("0b01", 0b01, Binary, "01", None);
+ check("0b101010", 0b101010, Binary, "101010", None);
+ check("0b10_10_10", 0b10_10_10, Binary, "10_10_10", None);
+ check("0b01101110____", 0b01101110____, Binary, "01101110____", None);
+
+ check("0b10010u8", 0b10010u8, Binary, "10010", Some(Ty::U8));
+ check("0b10010i8", 0b10010u8, Binary, "10010", Some(Ty::I8));
+ check("0b10010u64", 0b10010u64, Binary, "10010", Some(Ty::U64));
+ check("0b10010i64", 0b10010u64, Binary, "10010", Some(Ty::I64));
+ check(
+ "0b1011001_00110000_00101000_10100101u32",
+ 0b1011001_00110000_00101000_10100101u32,
+ Binary,
+ "1011001_00110000_00101000_10100101",
+ Some(Ty::U32),
+ );
+}
+
+#[test]
+fn parse_octal() {
+ check("0o0", 0o0, Octal, "0", None);
+ check("0o1", 0o1, Octal, "1", None);
+ check("0o6", 0o6, Octal, "6", None);
+ check("0o7", 0o7, Octal, "7", None);
+ check("0o17", 0o17, Octal, "17", None);
+ check("0o123", 0o123, Octal, "123", None);
+ check("0o7654321", 0o7654321, Octal, "7654321", None);
+ check("0o7_53_1", 0o7_53_1, Octal, "7_53_1", None);
+ check("0o66_", 0o66_, Octal, "66_", None);
+
+ check("0o755u16", 0o755u16, Octal, "755", Some(Ty::U16));
+ check("0o755i128", 0o755i128, Octal, "755", Some(Ty::I128));
+}
+
+#[test]
+fn parse_hexadecimal() {
+ check("0x0", 0x0, Hexadecimal, "0", None);
+ check("0x1", 0x1, Hexadecimal, "1", None);
+ check("0x9", 0x9, Hexadecimal, "9", None);
+
+ check("0xa", 0xa, Hexadecimal, "a", None);
+ check("0xf", 0xf, Hexadecimal, "f", None);
+ check("0x17", 0x17, Hexadecimal, "17", None);
+ check("0x1b", 0x1b, Hexadecimal, "1b", None);
+ check("0x123", 0x123, Hexadecimal, "123", None);
+ check("0xace", 0xace, Hexadecimal, "ace", None);
+ check("0xfdb971", 0xfdb971, Hexadecimal, "fdb971", None);
+ check("0xa_54_f", 0xa_54_f, Hexadecimal, "a_54_f", None);
+ check("0x6d_", 0x6d_, Hexadecimal, "6d_", None);
+
+ check("0xA", 0xA, Hexadecimal, "A", None);
+ check("0xF", 0xF, Hexadecimal, "F", None);
+ check("0x17", 0x17, Hexadecimal, "17", None);
+ check("0x1B", 0x1B, Hexadecimal, "1B", None);
+ check("0x123", 0x123, Hexadecimal, "123", None);
+ check("0xACE", 0xACE, Hexadecimal, "ACE", None);
+ check("0xFDB971", 0xFDB971, Hexadecimal, "FDB971", None);
+ check("0xA_54_F", 0xA_54_F, Hexadecimal, "A_54_F", None);
+ check("0x6D_", 0x6D_, Hexadecimal, "6D_", None);
+
+ check("0xFdB97a1", 0xFdB97a1, Hexadecimal, "FdB97a1", None);
+ check("0xfdB97A1", 0xfdB97A1, Hexadecimal, "fdB97A1", None);
+
+ check("0x40u16", 0x40u16, Hexadecimal, "40", Some(Ty::U16));
+ check("0xffi128", 0xffi128, Hexadecimal, "ff", Some(Ty::I128));
+}
+
+#[test]
+fn starting_underscore() {
+ check("0b_1", 1, Binary, "_1", None);
+ check("0b_010i16", 0b_010, Binary, "_010", Some(Ty::I16));
+
+ check("0o_5", 5, Octal, "_5", None);
+ check("0o_750u128", 0o_750u128, Octal, "_750", Some(Ty::U128));
+
+ check("0x_c", 0xc, Hexadecimal, "_c", None);
+ check("0x_cf3i8", 0x_cf3, Hexadecimal, "_cf3", Some(Ty::I8));
+}
+
+#[test]
+fn parse_overflowing_just_fine() {
+ check("256u8", 256u16, Decimal, "256", Some(Ty::U8));
+ check("123_456_789u8", 123_456_789u32, Decimal, "123_456_789", Some(Ty::U8));
+ check("123_456_789u16", 123_456_789u32, Decimal, "123_456_789", Some(Ty::U16));
+
+ check("123_123_456_789u8", 123_123_456_789u64, Decimal, "123_123_456_789", Some(Ty::U8));
+ check("123_123_456_789u16", 123_123_456_789u64, Decimal, "123_123_456_789", Some(Ty::U16));
+ check("123_123_456_789u32", 123_123_456_789u64, Decimal, "123_123_456_789", Some(Ty::U32));
+}
+
+#[test]
+fn suffixes() {
+ [
+ ("123i8", Ty::I8),
+ ("123i16", Ty::I16),
+ ("123i32", Ty::I32),
+ ("123i64", Ty::I64),
+ ("123i128", Ty::I128),
+ ("123u8", Ty::U8),
+ ("123u16", Ty::U16),
+ ("123u32", Ty::U32),
+ ("123u64", Ty::U64),
+ ("123u128", Ty::U128),
+ ].iter().for_each(|&(s, ty)| {
+ assert_eq!(IntegerLit::parse(s).unwrap().type_suffix(), Some(ty));
+ });
+}
+
+#[test]
+fn overflow_u128() {
+ let inputs = [
+ "340282366920938463463374607431768211456",
+ "0x100000000000000000000000000000000",
+ "0o4000000000000000000000000000000000000000000",
+ "0b1000000000000000000000000000000000000000000000000000000000000000000\
+ 00000000000000000000000000000000000000000000000000000000000000",
+ "340282366920938463463374607431768211456u128",
+ "340282366920938463463374607431768211457",
+ "3_40_282_3669_20938_463463_3746074_31768211_456___",
+ "3_40_282_3669_20938_463463_3746074_31768211_455___1",
+ "3_40_282_3669_20938_463463_3746074_31768211_455___0u128",
+ "3402823669209384634633746074317682114570",
+ ];
+
+ for &input in &inputs {
+ let lit = IntegerLit::parse(input).expect("failed to parse");
+ assert!(lit.value::<u128>().is_none());
+ }
+}
+
+#[test]
+fn overflow_u8() {
+ let inputs = [
+ "256", "0x100", "0o400", "0b100000000",
+ "257", "0x101", "0o401", "0b100000001",
+ "300",
+ "1548",
+ "2548985",
+ "256u128",
+ "256u8",
+ "2_5_6",
+ "256_____1",
+ "256__",
+ ];
+
+ for &input in &inputs {
+ let lit = IntegerLit::parse(input).expect("failed to parse");
+ assert!(lit.value::<u8>().is_none());
+ }
+}
+
+#[test]
+fn parse_err() {
+ assert_err!(IntegerLit, "", Empty, None);
+ assert_err_single!(IntegerLit::parse("a"), DoesNotStartWithDigit, 0);
+ assert_err_single!(IntegerLit::parse(";"), DoesNotStartWithDigit, 0);
+ assert_err_single!(IntegerLit::parse("0;"), InvalidIntegerTypeSuffix, 1..2);
+ assert_err_single!(IntegerLit::parse("0a"), InvalidDigit, 1);
+ assert_err!(IntegerLit, "0b", NoDigits, 2..2);
+ assert_err_single!(IntegerLit::parse("0z"), InvalidIntegerTypeSuffix, 1..2);
+ assert_err_single!(IntegerLit::parse(" 0"), DoesNotStartWithDigit, 0);
+ assert_err_single!(IntegerLit::parse("0 "), InvalidIntegerTypeSuffix, 1);
+ assert_err_single!(IntegerLit::parse("0a3"), InvalidDigit, 1);
+ assert_err!(IntegerLit, "0b3", InvalidDigit, 2);
+ assert_err_single!(IntegerLit::parse("0z3"), InvalidIntegerTypeSuffix, 1..3);
+ assert_err_single!(IntegerLit::parse("_"), DoesNotStartWithDigit, 0);
+ assert_err_single!(IntegerLit::parse("_3"), DoesNotStartWithDigit, 0);
+}
+
+#[test]
+fn invalid_digits() {
+ assert_err!(IntegerLit, "0b10201", InvalidDigit, 4);
+ assert_err!(IntegerLit, "0b9", InvalidDigit, 2);
+ assert_err!(IntegerLit, "0b07", InvalidDigit, 3);
+ assert_err!(IntegerLit, "0b0a", InvalidDigit, 3);
+ assert_err!(IntegerLit, "0b0A", InvalidDigit, 3);
+ assert_err!(IntegerLit, "0b01f", InvalidDigit, 4);
+ assert_err!(IntegerLit, "0b01F", InvalidDigit, 4);
+
+ assert_err!(IntegerLit, "0o12380", InvalidDigit, 5);
+ assert_err!(IntegerLit, "0o192", InvalidDigit, 3);
+ assert_err!(IntegerLit, "0o7a_", InvalidDigit, 3);
+ assert_err!(IntegerLit, "0o7A_", InvalidDigit, 3);
+ assert_err!(IntegerLit, "0o72f_0", InvalidDigit, 4);
+ assert_err!(IntegerLit, "0o72F_0", InvalidDigit, 4);
+
+ assert_err_single!(IntegerLit::parse("12a3"), InvalidDigit, 2);
+ assert_err_single!(IntegerLit::parse("12f3"), InvalidDigit, 2);
+ assert_err_single!(IntegerLit::parse("12f_"), InvalidDigit, 2);
+ assert_err_single!(IntegerLit::parse("12F_"), InvalidDigit, 2);
+ assert_err_single!(IntegerLit::parse("a_123"), DoesNotStartWithDigit, 0);
+ assert_err_single!(IntegerLit::parse("B_123"), DoesNotStartWithDigit, 0);
+
+ assert_err!(IntegerLit, "0x8cg", InvalidIntegerTypeSuffix, 4..5);
+ assert_err!(IntegerLit, "0x8cG", InvalidIntegerTypeSuffix, 4..5);
+ assert_err!(IntegerLit, "0x8c1h_", InvalidIntegerTypeSuffix, 5..7);
+ assert_err!(IntegerLit, "0x8c1H_", InvalidIntegerTypeSuffix, 5..7);
+ assert_err!(IntegerLit, "0x8czu16", InvalidIntegerTypeSuffix, 4..8);
+}
+
+#[test]
+fn no_valid_digits() {
+ assert_err!(IntegerLit, "0x_", NoDigits, 2..3);
+ assert_err!(IntegerLit, "0x__", NoDigits, 2..4);
+ assert_err!(IntegerLit, "0x________", NoDigits, 2..10);
+ assert_err!(IntegerLit, "0x_i8", NoDigits, 2..3);
+ assert_err!(IntegerLit, "0x_u8", NoDigits, 2..3);
+ assert_err!(IntegerLit, "0x_isize", NoDigits, 2..3);
+ assert_err!(IntegerLit, "0x_usize", NoDigits, 2..3);
+
+ assert_err!(IntegerLit, "0o_", NoDigits, 2..3);
+ assert_err!(IntegerLit, "0o__", NoDigits, 2..4);
+ assert_err!(IntegerLit, "0o________", NoDigits, 2..10);
+ assert_err!(IntegerLit, "0o_i32", NoDigits, 2..3);
+ assert_err!(IntegerLit, "0o_u32", NoDigits, 2..3);
+
+ assert_err!(IntegerLit, "0b_", NoDigits, 2..3);
+ assert_err!(IntegerLit, "0b__", NoDigits, 2..4);
+ assert_err!(IntegerLit, "0b________", NoDigits, 2..10);
+ assert_err!(IntegerLit, "0b_i128", NoDigits, 2..3);
+ assert_err!(IntegerLit, "0b_u128", NoDigits, 2..3);
+}
+
+#[test]
+fn invalid_suffix() {
+ assert_err!(IntegerLit, "5u7", InvalidIntegerTypeSuffix, 1..3);
+ assert_err!(IntegerLit, "5u9", InvalidIntegerTypeSuffix, 1..3);
+ assert_err!(IntegerLit, "5u0", InvalidIntegerTypeSuffix, 1..3);
+ assert_err!(IntegerLit, "33u12", InvalidIntegerTypeSuffix, 2..5);
+ assert_err!(IntegerLit, "84u17", InvalidIntegerTypeSuffix, 2..5);
+ assert_err!(IntegerLit, "99u80", InvalidIntegerTypeSuffix, 2..5);
+ assert_err!(IntegerLit, "1234uu16", InvalidIntegerTypeSuffix, 4..8);
+
+ assert_err!(IntegerLit, "5i7", InvalidIntegerTypeSuffix, 1..3);
+ assert_err!(IntegerLit, "5i9", InvalidIntegerTypeSuffix, 1..3);
+ assert_err!(IntegerLit, "5i0", InvalidIntegerTypeSuffix, 1..3);
+ assert_err!(IntegerLit, "33i12", InvalidIntegerTypeSuffix, 2..5);
+ assert_err!(IntegerLit, "84i17", InvalidIntegerTypeSuffix, 2..5);
+ assert_err!(IntegerLit, "99i80", InvalidIntegerTypeSuffix, 2..5);
+ assert_err!(IntegerLit, "1234ii16", InvalidIntegerTypeSuffix, 4..8);
+
+ assert_err!(IntegerLit, "0ui32", InvalidIntegerTypeSuffix, 1..5);
+ assert_err!(IntegerLit, "1iu32", InvalidIntegerTypeSuffix, 1..5);
+ assert_err_single!(IntegerLit::parse("54321a64"), InvalidDigit, 5);
+ assert_err!(IntegerLit, "54321b64", InvalidDigit, 5);
+ assert_err!(IntegerLit, "54321x64", InvalidIntegerTypeSuffix, 5..8);
+ assert_err!(IntegerLit, "54321o64", InvalidIntegerTypeSuffix, 5..8);
+}
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