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Diffstat (limited to 'vendor/encode_unicode/tests/errs.rs')
| -rw-r--r-- | vendor/encode_unicode/tests/errs.rs | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/vendor/encode_unicode/tests/errs.rs b/vendor/encode_unicode/tests/errs.rs new file mode 100644 index 0000000..9c8747b --- /dev/null +++ b/vendor/encode_unicode/tests/errs.rs @@ -0,0 +1,197 @@ +/* Copyright 2016 The encode_unicode Developers + * + * Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or + * http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or + * http://opensource.org/licenses/MIT>, at your option. This file may not be + * copied, modified, or distributed except according to those terms. + */ + +//! Test that methods gives the correct error. +//! Some also test a bit more because it's easy. + +extern crate core; +use core::char; +extern crate encode_unicode; +use encode_unicode::*; +use encode_unicode::error::*; +use encode_unicode::error::InvalidUtf8Array as a; +use encode_unicode::error::InvalidUtf8Slice as s; +use encode_unicode::error::InvalidCodepoint::*; +use encode_unicode::error::InvalidUtf8::*; +use encode_unicode::error::InvalidUtf8FirstByte::*; + + +#[test] +fn from_u32() { + for c in 0xd800..0xe000 { + assert_eq!(char::from_u32_detailed(c), Err(Utf16Reserved)); + } + let mut c = 0x11_00_00; + loop { + assert_eq!(char::from_u32_detailed(c), Err(TooHigh)); + // Don't test every value. (Range.step_by() is unstable) + match c.checked_add(0x10_11_11) { + Some(next) => c = next, + None => break, + } + } +} + +#[test] +fn utf8_extra_bytes() { + for c in 0..256 { + assert_eq!( (c as u8).extra_utf8_bytes(), match c { + 0b_1000_0000...0b_1011_1111 => Err(ContinuationByte), + 0b_1111_1000...0b_1111_1111 => Err(TooLongSeqence), + 0b_0000_0000...0b_0111_1111 => Ok(0), + 0b_1100_0000...0b_1101_1111 => Ok(1), + 0b_1110_0000...0b_1110_1111 => Ok(2), + 0b_1111_0000...0b_1111_0111 => Ok(3), + _ => unreachable!(), + }); + } +} + +#[test] +fn utf16_extra_unit() { + for c in 0..0x1_00_00 { + assert_eq!( (c as u16).utf16_needs_extra_unit(), match c { + 0b_0000_0000_0000_0000...0b_1101_0111_1111_1111 => Ok(false), + 0b_1101_1000_0000_0000...0b_1101_1011_1111_1111 => Ok(true), + 0b_1101_1100_0000_0000...0b_1101_1111_1111_1111 => Err(InvalidUtf16FirstUnit), + 0b_1110_0000_0000_0000...0b_1111_1111_1111_1111 => Ok(false), + _ => unreachable!(), + }); + } +} + + +#[test] +fn from_utf16_tuple() { + use encode_unicode::error::InvalidUtf16Tuple::*; + for u in 0xdc00..0xe000 { + let close = if u%3==0 {u-100} else {u+100}; + let doesnt_matter = if u%2==0 {Some(close)} else {None}; + assert_eq!(char::from_utf16_tuple((u,doesnt_matter)), Err(FirstIsTrailingSurrogate)); + } + for u in (0..0xd800).chain(0xe000..0x10000) { + assert_eq!( + char::from_utf16_tuple((u as u16, Some((0x100+u) as u16))), + Err(SuperfluousSecond) + ); + } + for u in 0xd800..0xdc00 { + assert_eq!(char::from_utf16_tuple((u,None)), Err(MissingSecond)); + assert_eq!(char::from_utf16_tuple((u,Some(u - 0x2ff))), Err(InvalidSecond)); + } +} + +#[test] +fn from_utf16_slice_start() { + use encode_unicode::error::InvalidUtf16Slice::*; + assert_eq!(char::from_utf16_slice_start(&[]), Err(EmptySlice)); + let mut buf = [0; 6]; + for u in 0xd800..0xdc00 { + buf[0] = u; + assert_eq!(char::from_utf16_slice_start(&buf[..1]), Err(MissingSecond)); + buf[1] = u; + let pass = 2 + (u as usize % (buf.len()-2)); + assert_eq!(char::from_utf16_slice_start(&buf[..pass]), Err(SecondNotLowSurrogate)); + } + for u in 0xdc00..0xe000 { + buf[0] = u; + let close = if u%3==0 {u-100} else {u+100}; + let pass = 1 + (u as usize % (buf.len()-1)); + buf[pass] = close; + assert_eq!(char::from_utf16_slice_start(&buf[..pass]), Err(FirstLowSurrogate)); + } +} + +#[test] +fn utf8_overlong() { + let overlongs = [ + [0xf0,0x8f], [0xf0,0x87], [0xf0,0x80], // 4-byte + [0xe0,0x9f], [0xe0,0x8f], [0xe0,0x80], // 3-byte + [0xc1,0xbf], [0xc1,0x92], [0xc1,0x80], // 2-byte + [0xc0,0xbf], [0xc0,0x9f], [0xc0,0x80], // 2-byte + ]; + for o in overlongs.iter() { + for &last in &[0x80, 0xbf] { + let arr = [o[0], o[1], last, last]; + assert_eq!(char::from_utf8_slice_start(&arr), Err(InvalidUtf8Slice::Utf8(OverLong))); + assert_eq!(char::from_utf8_array(arr), Err(InvalidUtf8Array::Utf8(OverLong))); + assert_eq!(Utf8Char::from_slice_start(&arr), Err(InvalidUtf8Slice::Utf8(OverLong))); + assert_eq!(Utf8Char::from_array(arr), Err(InvalidUtf8Array::Utf8(OverLong))); + } + } +} + +#[test] +fn from_str_start() { + assert_eq!(Utf8Char::from_str_start(""), Err(EmptyStrError)); + assert_eq!(Utf16Char::from_str_start(""), Err(EmptyStrError)); +} + +#[test] fn utf8_codepoint_is_too_high() { + assert_eq!(Utf8Char::from_array([0xf4, 0x90, 0x80, 0x80]), Err(a::Codepoint(TooHigh))); + assert_eq!(char::from_utf8_array([0xf4, 0x90, 0x80, 0x80]), Err(a::Codepoint(TooHigh))); + assert_eq!(Utf8Char::from_slice_start(&[0xf4, 0x90, 0x80, 0x80]), Err(s::Codepoint(TooHigh))); + assert_eq!(char::from_utf8_slice_start(&[0xf4, 0x90, 0x80, 0x80]), Err(s::Codepoint(TooHigh))); + + assert_eq!(Utf8Char::from_array([0xf5, 0x88, 0x99, 0xaa]), Err(a::Codepoint(TooHigh))); + assert_eq!(char::from_utf8_array([0xf5, 0xaa, 0xbb, 0x88]), Err(a::Codepoint(TooHigh))); + assert_eq!(Utf8Char::from_slice_start(&[0xf5, 0x99, 0xaa, 0xbb]), Err(s::Codepoint(TooHigh))); + assert_eq!(char::from_utf8_slice_start(&[0xf5, 0xbb, 0x88, 0x99]), Err(s::Codepoint(TooHigh))); +} + +#[test] fn utf8_codepoint_is_utf16_reserved() { + assert_eq!(Utf8Char::from_array([0xed, 0xa0, 0x80, 0xff]), Err(a::Codepoint(Utf16Reserved))); + assert_eq!(char::from_utf8_array([0xed, 0xa0, 0x8f, 0x00]), Err(a::Codepoint(Utf16Reserved))); + assert_eq!(Utf8Char::from_slice_start(&[0xed, 0xa0, 0xbe, 0xa5]), Err(s::Codepoint(Utf16Reserved))); + assert_eq!(char::from_utf8_slice_start(&[0xed, 0xa0, 0xbf]), Err(s::Codepoint(Utf16Reserved))); + assert_eq!(Utf8Char::from_array([0xed, 0xbf, 0x80, 0xff]), Err(a::Codepoint(Utf16Reserved))); + assert_eq!(char::from_utf8_array([0xed, 0xbf, 0x8f, 0x00]), Err(a::Codepoint(Utf16Reserved))); + assert_eq!(Utf8Char::from_slice_start(&[0xed, 0xbf, 0xbe, 0xa5]), Err(s::Codepoint(Utf16Reserved))); + assert_eq!(char::from_utf8_slice_start(&[0xed, 0xbf, 0xbf]), Err(s::Codepoint(Utf16Reserved))); +} + +#[test] fn utf8_first_is_continuation_byte() { + for first in 0x80..0xc0 { + let arr = [first, first<<2, first<<4, first<<6]; + assert_eq!(Utf8Char::from_array(arr), Err(a::Utf8(FirstByte(ContinuationByte)))); + assert_eq!(char::from_utf8_array(arr), Err(a::Utf8(FirstByte(ContinuationByte)))); + let len = (1 + first%3) as usize; + assert_eq!(Utf8Char::from_slice_start(&arr[..len]), Err(s::Utf8(FirstByte(ContinuationByte)))); + assert_eq!(char::from_utf8_slice_start(&arr[..len]), Err(s::Utf8(FirstByte(ContinuationByte)))); + } +} + +#[test] fn utf8_too_long() { + for first in 0xf8..0x100 { + let arr = [first as u8, 0x88, 0x80, 0x80]; + assert_eq!(Utf8Char::from_array(arr), Err(a::Utf8(FirstByte(TooLongSeqence)))); + assert_eq!(char::from_utf8_array(arr), Err(a::Utf8(FirstByte(TooLongSeqence)))); + let arr = [first as u8, 0x88, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80]; + let slice = &arr[..if first&1 == 0 {1} else {8}]; + assert_eq!(Utf8Char::from_slice_start(slice), Err(s::Utf8(FirstByte(TooLongSeqence)))); + assert_eq!(char::from_utf8_slice_start(slice), Err(s::Utf8(FirstByte(TooLongSeqence)))); + } +} + +#[test] fn utf8_not_continuation_byte() { + for first in 0xc2..0xf4 { + let mut arr = [first, 0x90, 0xa0, 0xb0]; + let extra = first.extra_utf8_bytes().unwrap(); + for corrupt in (1..extra).rev() { + let expected = NotAContinuationByte(corrupt); + for &bad in &[0x00, 0x3f, 0x40, 0x7f, 0xc0, 0xff] { + arr[corrupt] = bad; + assert_eq!(Utf8Char::from_array(arr), Err(a::Utf8(expected)), "{:?}", arr); + assert_eq!(char::from_utf8_array(arr), Err(a::Utf8(expected))); + let slice = if first&1 == 0 {&arr[..1+extra]} else {&arr}; + assert_eq!(Utf8Char::from_slice_start(slice), Err(s::Utf8(expected)), "{:?}", slice); + assert_eq!(char::from_utf8_slice_start(slice), Err(s::Utf8(expected))); + } + } + } +} |