// UEB tests for the basic mathml tags // Initial tests are from BANA guidelines, mostly about initial chars for code switching // http://www.brailleauthority.org/ueb/ueb_math_guidance/final_for_posting_ueb_math_guidance_may_2019_102419.pdf // These tests start with "bana_" // // Many come from (refer to) https://iceb.org/guidelines_for_technical_material_2014.pdf // For example, "fraction_6_1_1" is a fraction example from section 6.1, and is the first example there. use crate::common::*; #[test] fn bana_2_1() { let expr = "

6 = 1 \times 2 \times 3 = 1 + 2 + 3

"; test_braille("UEB", expr, "⠼⠋⠀⠐⠶⠀⠼⠁⠐⠦⠼⠃⠐⠦⠼⠉⠀⠐⠶⠀⠼⠁⠐⠖⠼⠃⠐⠖⠼⠉"); } #[test] fn bana_5_1() { let expr = "

x + y = 6

"; test_braille("UEB", expr, "⠭⠐⠖⠽⠀⠐⠶⠀⠼⠋"); } #[test] fn bana_5_2() { let expr = "

x^{2} + y^{2} = C

"; test_braille("UEB", expr, "⠭⠰⠔⠼⠃⠐⠖⠽⠔⠼⠃⠀⠐⠶⠀⠰⠠⠉"); } #[test] fn bana_5_3() { let expr = "

\frac{a}{b} + \frac{c}{d}

"; test_braille("UEB", expr, "⠰⠰⠷⠁⠨⠌⠃⠾⠐⠖⠷⠉⠨⠌⠙⠾"); } #[test] fn bana_5_4() { let expr = "

a^{n} \times a^{m} = a^{n + m}

"; test_braille("UEB", expr, "⠰⠰⠰⠁⠔⠝⠐⠦⠁⠔⠍⠀⠐⠶⠀⠁⠔⠣⠝⠐⠖⠍⠜⠰⠄"); } #[test] fn bana_5_5() { let expr = "

\log_{x} y

"; // BANA example contradicts GTM 9.2 that says don't use a space after a function name if there is an intervening indicator. // Corrected: removed the space and the G1 indicator needed if a space were inserted test_braille("UEB", expr, "⠰⠰⠇⠕⠛⠢⠭⠽"); } #[test] fn bana_5a_1() { let expr = "

100^{°} F

"; test_braille("UEB", expr, "⠼⠁⠚⠚⠘⠚⠠⠋"); } #[test] fn bana_5a_1_baseline() { let expr = "

100 ° F

"; test_braille("UEB", expr, "⠼⠁⠚⠚⠘⠚⠠⠋"); } #[test] fn bana_5a_2() { let expr = "

25 {km}^{2}

"; test_braille("UEB", expr, "⠼⠃⠑⠀⠅⠍⠰⠔⠼⠃"); } #[test] fn bana_5a_2_mtext() { let expr = "

25 {km}^{2}

"; test_braille("UEB", expr, "⠼⠃⠑⠀⠅⠍⠰⠔⠼⠃"); } #[test] fn bana_5a_3() { let expr = "

6 m s^{- 1}

"; test_braille("UEB", expr, "⠼⠋⠀⠰⠍⠀⠰⠰⠎⠔⠣⠐⠤⠼⠁⠜"); } #[test] fn bana_6_1() { let expr = "

x + y = z = t^{2} .

"; test_braille("UEB", expr, "⠰⠰⠰⠭⠐⠖⠽⠀⠐⠶⠀⠵⠀⠐⠶⠀⠞⠔⠼⠃⠲⠰⠄"); } #[test] fn cap_1_6_1() { let expr = "

ABCD

"; test_braille("UEB", expr, "⠠⠠⠁⠃⠉⠙"); } #[test] fn cap_1_6_1_separate() { let expr = "

A B C D

"; test_braille("UEB", expr, "⠠⠠⠁⠃⠉⠙"); } #[test] fn cap_1_6_2() { let expr = "

V = I R

"; test_braille("UEB", expr, "⠰⠠⠧⠀⠐⠶⠀⠠⠠⠊⠗"); } #[test] fn cap_1_6_4() { let expr = "

A B^{2}

"; test_braille("UEB", expr, "⠠⠠⠁⠃⠰⠔⠼⠃"); } #[test] fn grade1_1_7_1() { let expr = "

3 - 2 \frac{1}{2} =

"; // removed the spaces around the '-' from the braille -- they typically wouldn't be used test_braille("UEB", expr, "⠼⠉⠐⠤⠼⠃⠼⠁⠌⠃⠀⠐⠶"); } #[test] fn grade1_1_7_2() { let expr = "

y = x + 4 c

"; test_braille("UEB", expr, "⠰⠽⠀⠐⠶⠀⠭⠐⠖⠼⠙⠰⠉"); } #[test] fn grade1_1_7_3_1() { let expr = "

3 x - 4 y + y^{2} = x^{2}

"; // GTM says it can be either "⠼⠉⠭⠐⠤⠼⠙⠽⠐⠖⠽⠔⠼⠃⠀⠐⠶⠀⠭⠰⠔⠼⠃" or "⠰⠰⠰⠼⠉⠭⠐⠤⠼⠙⠽⠐⠖⠽⠔⠼⠃⠀⠐⠶⠀⠭⠔⠼⠃⠰⠄" test_braille("UEB", expr, "⠼⠉⠭⠐⠤⠼⠙⠽⠐⠖⠽⠔⠼⠃⠀⠐⠶⠀⠭⠰⠔⠼⠃"); } #[test] fn grade1_1_7_3_2() { let expr = "

\frac{x^{2} + 2 x}{1 + x^{2}} = 1

"; test_braille("UEB", expr, "⠰⠰⠷⠭⠔⠼⠃⠐⠖⠼⠃⠭⠨⠌⠼⠁⠐⠖⠭⠔⠼⠃⠾⠀⠐⠶⠀⠼⠁"); } #[test] fn grade1_1_7_4() { let expr = "

\sqrt{(y - x^{2})}

"; test_braille("UEB", expr, "⠰⠰⠩⠐⠣⠽⠐⠤⠭⠔⠼⠃⠐⠜⠬"); } #[test] fn number_2_1_2() { let expr = "

3,000

"; test_braille("UEB", expr, "⠼⠉⠂⠚⠚⠚"); } #[test] fn number_2_1_3() { let expr = "

5 000 000

"; test_braille("UEB", expr, "⠼⠑⠐⠚⠚⠚⠐⠚⠚⠚"); } #[test] fn number_2_2_1() { let expr = "

8.93

"; test_braille("UEB", expr, "⠼⠓⠲⠊⠉"); } #[test] fn number_2_2_2() { let expr = "

0.7

"; test_braille("UEB", expr, "⠼⠚⠲⠛"); } #[test] fn number_2_2_3() { let expr = "

.7

"; test_braille("UEB", expr, "⠼⠲⠛"); } #[test] fn time_2_4_1() { let expr = "

5 : 30 pm

"; test_braille("UEB", expr, "⠼⠑⠒⠼⠉⠚⠀⠏⠍"); } #[test] fn time_2_4_1_mtext() { // this was a bug when only mtext occurred let expr = "

5:30

"; test_braille("UEB", expr, "⠼⠑⠒⠼⠉⠚"); } #[test] fn roman_numeral_2_6_1() { let expr = "

I, II and V

"; test_braille("UEB", expr, "⠠⠊⠂⠀⠠⠠⠊⠊⠀⠯⠀⠰⠠⠧"); } #[test] fn roman_numeral_2_6_2() { let expr = "

i, vi and x

"; test_braille("UEB", expr, "⠊⠂⠀⠧⠊⠀⠯⠀⠰⠭"); } #[test] fn roman_numeral_2_6_3() { let expr = "

CD

"; test_braille("UEB", expr, "⠰⠠⠠⠉⠙"); } #[test] fn bold_2_7_1() { let expr = "

67𝟖45

"; test_braille("UEB", expr, "⠼⠋⠛⠘⠆⠼⠓⠙⠑"); } #[test] fn bold_2_7_2() { let expr = "

67845

"; test_braille("UEB", expr, "⠼⠋⠛⠘⠂⠼⠓⠙⠑"); } #[test] fn bold_2_7_3() { let expr = "

67845

"; test_braille("UEB", expr, "⠼⠋⠛⠘⠂⠼⠓⠙⠘⠄⠼⠑"); } #[test] fn signs_2_10_2() { let expr = "

$ 0.30, 30 c or 30 ¢

"; test_braille("UEB", expr, "⠈⠎⠼⠚⠲⠉⠚⠂⠀⠼⠉⠚⠰⠉⠀⠕⠗⠀⠼⠉⠚⠈⠉"); } #[test] fn signs_2_10_5() { let expr = "

1 ft 6 in or 1' 6''

"; test_braille("UEB", expr, "⠼⠁⠀⠋⠞⠀⠼⠋⠀⠔⠀⠕⠗⠀⠼⠁⠶⠀⠼⠋⠶⠶"); } #[test] fn signs_2_10_8() { let expr = "

0 ° C or 32 ° F

"; test_braille("UEB", expr, "⠼⠚⠘⠚⠠⠉⠀⠕⠗⠀⠼⠉⠃⠘⠚⠠⠋"); } #[test] fn signs_2_10_16() { let expr = "

1 Å = \frac{1}{10, 000} μ

"; test_braille("UEB", expr, "⠼⠁⠀⠠⠘⠫⠁⠀⠐⠶⠀⠼⠁⠌⠁⠚⠂⠚⠚⠚⠀⠨⠍"); } #[test] fn expr_3_1_1_spaces() { let expr = "

3 + 5 = 8

"; test_braille_prefs("UEB", vec![("UEB_UseSpacesAroundAllOperators", "true")], expr, "⠼⠉⠀⠐⠖⠀⠼⠑⠀⠐⠶⠀⠼⠓"); } #[test] fn expr_3_1_2_spaces() { let expr = "

8 - 5 = 3

"; test_braille_prefs("UEB", vec![("UEB_UseSpacesAroundAllOperators", "true")], expr, "⠼⠓⠀⠐⠤⠀⠼⠑⠀⠐⠶⠀⠼⠉"); } #[test] fn expr_3_1_1() { let expr = "

3 + 5 = 8

"; // correct not to use extra spacing test_braille("UEB", expr, "⠼⠉⠐⠖⠼⠑⠀⠐⠶⠀⠼⠓"); } #[test] fn expr_3_1_2() { let expr = "

8 - 5 = 3

"; // correct not to use extra spacing test_braille("UEB", expr, "⠼⠓⠐⠤⠼⠑⠀⠐⠶⠀⠼⠉"); } #[test] fn expr_3_1_3() { let expr = "

3 \times 5 = 5 \times 3 = 15

"; test_braille("UEB", expr, "⠼⠉⠐⠦⠼⠑⠀⠐⠶⠀⠼⠑⠐⠦⠼⠉⠀⠐⠶⠀⠼⠁⠑"); } #[test] fn expr_3_1_6() { // example includes spaces, so does the MathML (from WIRIS) let expr = "

5.72 m \div 10 = 57.2 cm

"; test_braille("UEB", expr, "⠼⠑⠲⠛⠃⠀⠍⠐⠌⠼⠁⠚⠀⠐⠶⠀⠼⠑⠛⠲⠃⠀⠉⠍"); } #[test] fn expr_3_1_7() { let expr = "

15 \pm 0.5

"; test_braille("UEB", expr, "⠼⠁⠑⠸⠖⠼⠚⠲⠑"); } #[test] fn expr_3_1_8() { let expr = "

Area = b h = 5 \cdot 3 = 15

"; test_braille("UEB", expr, "⠠⠜⠑⠁⠀⠐⠶⠀⠃⠓⠀⠐⠶⠀⠼⠑⠐⠲⠼⠉⠀⠐⠶⠀⠼⠁⠑"); } #[test] fn expr_3_1_9_wiris() { let expr = "

3.9 \times 4.1 ≃ 16

"; test_braille("UEB", expr, "⠼⠉⠲⠊⠐⠦⠼⠙⠲⠁⠀⠸⠔⠀⠼⠁⠋"); } #[test] fn expr_3_1_9() { let expr = "

3.9 \times 4.1 ≃ 16

"; test_braille("UEB", expr, "⠼⠉⠲⠊⠐⠦⠼⠙⠲⠁⠀⠸⠔⠀⠼⠁⠋"); } #[test] fn expr_3_1_10() { let expr = "

5 - 3 \neq 3 - 5

"; test_braille("UEB", expr, "⠼⠑⠐⠤⠼⠉⠀⠐⠶⠈⠱⠀⠼⠉⠐⠤⠼⠑"); } #[test] fn ratio_3_1_11() { let expr = "

1 : 200

"; test_braille("UEB", expr, "⠼⠁⠒⠼⠃⠚⠚"); } #[test] fn ratio_3_1_12() { let expr = "

2 : 4 = 6 : 12

"; test_braille("UEB", expr, "⠼⠃⠒⠼⠙⠀⠐⠶⠀⠼⠋⠒⠼⠁⠃"); } #[test] fn alg_3_2_1_1() { let expr = "

y \propto x

"; test_braille("UEB", expr, "⠰⠽⠀⠸⠐⠶⠀⠰⠭"); } #[test] fn alg_3_2_1_2() { let expr = "

y = k x

"; test_braille("UEB", expr, "⠰⠽⠀⠐⠶⠀⠅⠭"); } #[test] fn alg_3_2_2() { let expr = "

0 \leq θ \leq 2 π

"; test_braille("UEB", expr, "⠼⠚⠀⠸⠈⠣⠀⠨⠹⠀⠸⠈⠣⠀⠼⠃⠨⠏"); } #[test] fn alg_3_2_3() { let expr = "

y = x + 4

"; test_braille("UEB", expr, "⠰⠽⠀⠐⠶⠀⠭⠐⠖⠼⠙"); } #[test] fn alg_3_2_4() { let expr = "

2 y = 2 c - 4

"; test_braille("UEB", expr, "⠼⠃⠽⠀⠐⠶⠀⠼⠃⠰⠉⠐⠤⠼⠙"); } #[test] fn alg_3_2_5() { let expr = "

d + a b = a c

"; // BANA says use a word indicator if G1 not in first 3 cells (it is after the '='); use passage if >=2 whitespace // This seems like a poor choice in this case since there is only one G1 indicator, but that's the BANA guidance so... // "⠰⠰⠰⠙⠐⠖⠁⠃⠀⠐⠶⠀⠁⠉⠰⠄" // GTM says to use the following and it is more sensisble, so I'm going with it test_braille("UEB", expr, "⠙⠐⠖⠁⠃⠀⠐⠶⠀⠰⠁⠉"); } #[test] fn ratio_3_2_6() { // the difference from ratio_3_1_12 is this involves letters let expr = "

x : y

"; test_braille("UEB", expr, "⠭⠰⠒⠽"); } #[test] fn standing_alone_1() { // Tests bug: github.com/NSoiffer/MathCAT/issues/142 let expr = "

(n = 7)

"; test_braille("UEB", expr, "⠐⠣⠰⠝⠀⠐⠶⠀⠼⠛⠐⠜"); } #[test] fn example_3_4_1() { let expr = "

- 4 to + 5

"; test_braille("UEB", expr, "⠐⠤⠼⠙⠀⠞⠕⠀⠐⠖⠼⠑"); } #[test] fn example_3_4_2() { // removed some cruft from TeX output of {}^{-}2+{}^{+}3, but the basics are preserved let expr = "

^{-} 2 +^{-} 3

"; test_braille("UEB", expr, "⠰⠔⠐⠤⠼⠃⠐⠖⠔⠐⠤⠼⠉"); } #[test] fn omission_3_6_1() { let expr = "

3 + 7 = ―

"; test_braille("UEB", expr, "⠼⠉⠐⠖⠼⠛⠀⠐⠶⠀⠐⠠⠤"); } #[test] fn omission_3_6_2() { let expr = "

3 + 7 =_

"; test_braille("UEB", expr, "⠼⠉⠐⠖⠼⠛⠀⠐⠶⠀⠨⠤"); } #[test] fn omission_3_6_3() { let expr = "

3 + 7 = ?

"; test_braille("UEB", expr, "⠼⠉⠐⠖⠼⠛⠀⠐⠶⠀⠰⠦"); } #[test] fn omission_3_6_4() { let expr = "

3 □ 7 = 10

"; test_braille("UEB", expr, "⠼⠉⠫⠼⠙⠱⠼⠛⠀⠐⠶⠀⠼⠁⠚"); } #[test] fn omission_3_6_5() { let expr = "

3 7 = 10

"; test_braille("UEB", expr, "⠼⠉⠬⠼⠛⠀⠐⠶⠀⠼⠁⠚"); } #[test] fn omission_3_6_6() { // comes from WIRIS let expr = "

\frac{9}{12} = \frac{3}{}

"; test_braille("UEB", expr, "⠼⠊⠌⠁⠃⠀⠐⠶⠀⠰⠷⠼⠉⠨⠌⠬⠾"); } #[test] fn omission_3_6_7() { // comes from MathType let expr = "

5 = \sqrt{}

"; test_braille("UEB", expr, "⠼⠑⠀⠐⠶⠀⠰⠰⠩⠬⠬"); } #[test] fn fraction_6_1_1() { let expr = "

\frac{5}{8}

"; test_braille("UEB", expr, "⠼⠑⠌⠓"); } #[test] fn fraction_6_1_2() { let expr = "

\frac{5.7}{2, 000}

"; test_braille("UEB", expr, "⠼⠑⠲⠛⠌⠃⠂⠚⠚⠚"); } #[test] fn fraction_6_2_1() { let expr = "

2 \frac{1}{2}

"; test_braille("UEB", expr, "⠼⠃⠼⠁⠌⠃"); } #[test] fn fraction_6_2_2() { let expr = "

1750 cm = 1 \frac{3}{4} m

"; test_braille("UEB", expr, "⠼⠁⠛⠑⠚⠀⠉⠍⠀⠐⠶⠀⠼⠁⠼⠉⠌⠙⠀⠰⠍"); } #[test] fn fraction_6_2_2_unicode_frac() { let expr = "

1750 cm = 1 ¾ m

"; test_braille("UEB", expr, "⠼⠁⠛⠑⠚⠀⠉⠍⠀⠐⠶⠀⠼⠁⠼⠉⠌⠙⠀⠰⠍"); } #[test] fn fraction_6_3_1() { let expr = "

3 / 8

"; test_braille("UEB", expr, "⠼⠉⠸⠌⠼⠓"); } #[test] fn fraction_6_4_1() { let expr = "

y = \frac{x}{2}

"; test_braille("UEB", expr, "⠰⠰⠰⠽⠀⠐⠶⠀⠷⠭⠨⠌⠼⠃⠾⠰⠄"); } #[test] fn fraction_6_4_2() { let expr = "

\frac{2 \frac{1}{2}}{x + y}

"; test_braille("UEB", expr, "⠰⠷⠼⠃⠼⠁⠌⠃⠨⠌⠭⠐⠖⠽⠾"); } #[test] fn fraction_6_4_3() { let expr = "

\frac{2 / 3}{5}

"; test_braille("UEB", expr, "⠰⠷⠼⠃⠸⠌⠼⠉⠨⠌⠼⠑⠾"); } #[test] fn fraction_6_4_4() { let expr = "

\frac{\frac{x}{2} + \frac{y}{3}}{x + y}

"; test_braille("UEB", expr, "⠰⠰⠷⠷⠭⠨⠌⠼⠃⠾⠐⠖⠷⠽⠨⠌⠼⠉⠾⠨⠌⠭⠐⠖⠽⠾"); } #[test] fn fraction_6_4_5() { let expr = "

\frac{\frac{x}{2} + \frac{y}{3}}{x + y}

"; test_braille("UEB", expr, "⠰⠰⠷⠷⠭⠨⠌⠼⠃⠾⠐⠖⠷⠽⠨⠌⠼⠉⠾⠨⠌⠭⠐⠖⠽⠾"); } #[test] fn fraction_6_4_6() { let expr = "

speed = \frac{distance}{time}

"; // GTM lists two options: "⠎⠏⠑⠫⠀⠐⠶⠀⠰⠰⠷⠙⠊⠎⠞⠁⠝⠉⠑⠨⠌⠞⠊⠍⠑⠾" and "⠰⠰⠰⠎⠏⠑⠑⠙⠀⠐⠶⠀⠷⠙⠊⠎⠞⠁⠝⠉⠑⠨⠌⠞⠊⠍⠑⠾⠰⠄" test_braille("UEB", expr, "⠎⠏⠑⠫⠀⠐⠶⠀⠰⠰⠷⠙⠊⠎⠞⠁⠝⠉⠑⠨⠌⠞⠊⠍⠑⠾"); } #[test] fn msup_7_3_2() { let expr = "

x^{2} y

"; test_braille("UEB", expr, "⠭⠰⠔⠼⠃⠽"); } #[test] fn msup_7_3_3() { let expr = "

x^{2 y}

"; test_braille("UEB", expr, "⠰⠰⠭⠔⠣⠼⠃⠽⠜"); } #[test] fn msup_7_3_4() { let expr = "

x^{y} + 1

"; test_braille("UEB", expr, "⠭⠰⠔⠽⠐⠖⠼⠁"); } #[test] fn msup_7_3_6() { let expr = "

x^{y + 1} + 3

"; test_braille("UEB", expr, "⠰⠰⠭⠔⠣⠽⠐⠖⠼⠁⠜⠐⠖⠼⠉"); } #[test] fn msup_7_3_7() { let expr = "

x^{⅔}

"; test_braille("UEB", expr, "⠭⠰⠔⠼⠃⠌⠉"); } #[test] fn msup_7_3_11() { let expr = "

x^{\frac{a}{b}} y = x

"; test_braille("UEB", expr, "⠰⠰⠰⠭⠔⠷⠁⠨⠌⠃⠾⠽⠀⠐⠶⠀⠭⠰⠄"); } #[test] fn msup_7_4_1() { let expr = "

e^{x^{2}}

"; test_braille("UEB", expr, "⠰⠰⠑⠔⠣⠭⠔⠼⠃⠜"); } #[test] fn msup_7_4_2() { let expr = "

e^{(x^{2})}

"; test_braille("UEB", expr, "⠰⠰⠑⠔⠐⠣⠭⠔⠼⠃⠐⠜"); } #[test] fn msub_7_4_3() { let expr = "

P_{x_{i}}

"; test_braille("UEB", expr, "⠰⠰⠠⠏⠢⠣⠭⠢⠊⠜"); } #[test] fn msup_7_5_1() { let expr = "

0.0045 = 4.5 \times 10^{- 3}

"; test_braille("UEB", expr, "⠼⠚⠲⠚⠚⠙⠑⠀⠐⠶⠀⠼⠙⠲⠑⠐⠦⠼⠁⠚⠔⠣⠐⠤⠼⠉⠜"); } #[test] fn msup_7_5_3() { let expr = "

a^{- 2 b}

"; test_braille("UEB", expr, "⠰⠰⠁⠔⠣⠐⠤⠼⠃⠰⠃⠜"); } #[test] fn msup_7_6_2() { let expr = "

H^{+}

"; test_braille("UEB", expr, "⠠⠓⠰⠔⠐⠖"); } #[test] fn msubsup_7_7_1() { let expr = "

x_{1}^{2} = y_{2}^{3}

"; test_braille("UEB", expr, "⠰⠰⠰⠭⠢⠼⠁⠔⠼⠃⠀⠐⠶⠀⠽⠢⠼⠃⠔⠼⠉⠰⠄"); } #[test] fn msubsup_7_7_2() { let expr = "

{x^{2}}_{k}

"; test_braille("UEB", expr, "⠭⠰⠔⠼⠃⠢⠅"); } #[test] fn pre_msubsup_7_8_1() { // Note: modified because word indicator is not needed let expr = "

{}_{92}^{238}U

"; test_braille("UEB", expr, "⠰⠢⠼⠊⠃⠔⠼⠃⠉⠓⠠⠥"); } #[test] fn pre_sup_7_8_2() { let expr = "

{}^{-}2 + {}^{-}3 = {}^{-}5

"; test_braille("UEB", expr, "⠰⠰⠰⠔⠐⠤⠼⠃⠐⠖⠔⠐⠤⠼⠉⠀⠐⠶⠀⠔⠐⠤⠼⠑⠰⠄"); } #[test] fn sum_7_9_1() { let expr = "

\sum_{x = 1}^{n} x_{i}^{2}

"; test_braille("UEB", expr, "⠰⠰⠠⠨⠎⠨⠢⠣⠭⠐⠶⠼⠁⠜⠨⠔⠝⠭⠢⠊⠔⠼⠃"); } #[test] fn lim_7_9_2() { // Note: modified because passage indicator is not needed (same expr when word indicator is used) let expr = "

\lim_{x \to a} f (x) = 1

"; test_braille("UEB", expr, "⠰⠰⠇⠊⠍⠨⠢⠣⠭⠳⠕⠁⠜⠋⠐⠣⠭⠐⠜⠀⠐⠶⠀⠼⠁"); } #[test] fn sqrt_8_1_1() { let expr = "

\sqrt{9} = 3

"; test_braille("UEB", expr, "⠰⠩⠼⠊⠬⠀⠐⠶⠀⠼⠉"); } #[test] fn sqrt_8_1_2() { let expr = "

r = \sqrt{x^{2} + y^{2}}

"; test_braille("UEB", expr, "⠰⠰⠰⠗⠀⠐⠶⠀⠩⠭⠔⠼⠃⠐⠖⠽⠔⠼⠃⠬⠰⠄"); } #[test] fn sqrt_8_1_3() { let expr = "

\sqrt{\frac{783.2 \times 6.547}{0.4628}}

"; test_braille("UEB", expr, "⠰⠰⠩⠷⠼⠛⠓⠉⠲⠃⠐⠦⠼⠋⠲⠑⠙⠛⠨⠌⠼⠚⠲⠙⠋⠃⠓⠾⠬"); } #[test] fn sqrt_8_1_4() { let expr = "

x = \frac{- b \pm \sqrt{b^{2} - 4 a c}}{2 a}

"; test_braille("UEB", expr, "⠰⠰⠰⠭⠀⠐⠶⠀⠷⠐⠤⠃⠸⠖⠩⠃⠔⠼⠃⠐⠤⠼⠙⠰⠁⠉⠬⠨⠌⠼⠃⠰⠁⠾⠰⠄"); } #[test] fn root_8_2_1() { let expr = "

\sqrt[3]{8} = 2

"; test_braille("UEB", expr, "⠰⠰⠩⠔⠼⠉⠼⠓⠬⠀⠐⠶⠀⠼⠃"); } #[test] fn root_8_2_2() { let expr = "

q = \sqrt[3]{x^{3} + y^{3} + z^{3}}

"; test_braille("UEB", expr, "⠰⠰⠰⠟⠀⠐⠶⠀⠩⠔⠼⠉⠭⠔⠼⠉⠐⠖⠽⠔⠼⠉⠐⠖⠵⠔⠼⠉⠬⠰⠄"); } #[test] fn root_8_2_3() { let expr = "

\sqrt[m n]{x y}

"; test_braille("UEB", expr, "⠰⠰⠩⠔⠣⠍⠝⠜⠭⠽⠬"); } #[test] fn root_8_2_4() { let expr = "

81^{\frac{3}{4}} = {(\sqrt[4]{81})}^{3} = {(\sqrt{\sqrt{81}})}^{3} = {(\sqrt{9})}^{3} = 3^{3} = 27

"; test_braille("UEB", expr, "⠰⠰⠰⠼⠓⠁⠔⠼⠉⠌⠙⠀⠐⠶⠀⠐⠣⠩⠔⠼⠙⠼⠓⠁⠬⠐⠜⠔⠼⠉⠀⠐⠶⠀⠐⠣⠩⠩⠼⠓⠁⠬⠬⠐⠜⠔⠼⠉⠀⠐⠶⠀⠐⠣⠩⠼⠊⠬⠐⠜⠔⠼⠉⠀⠐⠶⠀⠼⠉⠔⠼⠉⠀⠐⠶⠀⠼⠃⠛⠰⠄"); } #[test] fn root_letter_base() { // none of the guides cover this case, but it seems that an a-j base needs a grade 1 indicator let expr = "

\sqrt[3]{b} \sqrt[3]{x}

"; test_braille("UEB", expr, "⠰⠰⠩⠔⠼⠉⠰⠃⠬⠩⠔⠼⠉⠭⠬"); } #[test] fn spacing_9_3_1_1() { let expr = "

Sin 30

"; test_braille("UEB", expr, "⠠⠎⠔⠼⠉⠚"); } #[test] fn spacing_9_3_1_2() { let expr = "

3 \tan 45 °

"; test_braille("UEB", expr, "⠼⠉⠞⠁⠝⠼⠙⠑⠘⠚"); } #[test] fn spacing_9_3_1_3() { let expr = "

4 \cos 5 x

"; test_braille("UEB", expr, "⠼⠙⠰⠉⠕⠎⠼⠑⠭"); } #[test] fn spacing_9_3_2_1() { let expr = "

\log y

"; test_braille("UEB", expr, "⠇⠕⠛⠀⠰⠽"); } #[test] fn spacing_9_3_2_2() { let expr = "

\sin θ

"; test_braille("UEB", expr, "⠎⠔⠨⠹"); } #[test] fn spacing_9_3_2_3() { let expr = "

Sec A

"; test_braille("UEB", expr, "⠠⠎⠑⠉⠠⠁"); } #[test] fn spacing_9_3_2_4() { let expr = "

\log (x + y)

"; test_braille("UEB", expr, "⠇⠕⠛⠐⠣⠭⠐⠖⠽⠐⠜"); } #[test] fn spacing_9_3_2_5() { let expr = "

Lim \frac{x}{2}

"; test_braille("UEB", expr, "⠰⠰⠠⠇⠊⠍⠷⠭⠨⠌⠼⠃⠾"); } #[test] fn spacing_9_3_3_1() { let expr = "

x \sin 60

"; test_braille("UEB", expr, "⠰⠭⠀⠎⠔⠼⠋⠚"); } #[test] fn spacing_9_3_3_2() { let expr = "

x Sin 60

"; test_braille("UEB", expr, "⠭⠠⠎⠔⠼⠋⠚"); } #[test] fn spacing_9_3_3_3() { let expr = "

X \log y

"; test_braille("UEB", expr, "⠰⠠⠭⠀⠇⠕⠛⠀⠰⠽"); } #[test] fn spacing_9_3_3_4() { let expr = "

x Log y

"; test_braille("UEB", expr, "⠭⠠⠇⠕⠛⠀⠰⠽"); } #[test] fn spacing_9_3_3_5() { let expr = "

\sin (A + B) = \sin A \cos B + \cos A \sin B

"; test_braille("UEB", expr, "⠎⠔⠐⠣⠠⠁⠐⠖⠠⠃⠐⠜⠀⠐⠶⠀⠎⠔⠠⠁⠀⠉⠕⠎⠠⠃⠐⠖⠉⠕⠎⠠⠁⠀⠎⠔⠠⠃"); } #[test] fn spacing_9_3_3_6() { let expr = "

\sin 2 β = 2 \sin β \cos β

"; test_braille("UEB", expr, "⠎⠔⠼⠃⠨⠃⠀⠐⠶⠀⠼⠃⠎⠊⠝⠨⠃⠉⠕⠎⠨⠃"); } #[test] fn text_9_7_1_mtext() { let expr = "

Pr (A and B) = Pr A + Pr B

"; test_braille("UEB", expr, "⠠⠏⠗⠐⠣⠠⠁⠀⠯⠀⠰⠠⠃⠐⠜⠀⠐⠶⠀⠠⠏⠗⠠⠁⠐⠖⠠⠏⠗⠠⠃"); } #[test] fn text_9_7_1() { // ugly as the MathML is with non-breaking space in mo's, this is a WIRIS editor output let expr = "

\Pr (A and B) = \Pr A + \Pr B

"; test_braille("UEB", expr, "⠠⠏⠗⠐⠣⠠⠁⠀⠯⠀⠰⠠⠃⠐⠜⠀⠐⠶⠀⠠⠏⠗⠠⠁⠐⠖⠠⠏⠗⠠⠃"); } #[test] fn stat_9_7_2() { let expr = "

Exp (R) = \frac{n}{2} + 1

"; // GTM uses "⠰⠰⠰⠠⠑⠭⠏⠐⠣⠠⠗⠐⠜⠀⠐⠶⠀⠷⠝⠨⠌⠼⠃⠾⠐⠖⠼⠁⠰⠄", // but "⠠⠑⠭⠏⠐⠣⠠⠗⠐⠜⠀⠐⠶⠀⠰⠰⠷⠝⠨⠌⠼⠃⠾⠐⠖⠼⠁" is shorter and is consistent with omission_3_6_7 and fraction_6_4_6 test_braille("UEB", expr, "⠠⠑⠭⠏⠐⠣⠠⠗⠐⠜⠀⠐⠶⠀⠰⠰⠷⠝⠨⠌⠼⠃⠾⠐⠖⠼⠁"); } #[test] fn set_10_1() { let expr = "

A = \{1, 2, 3, 4\}

"; test_braille("UEB", expr, "⠠⠁⠀⠐⠶⠀⠸⠣⠼⠁⠂⠀⠼⠃⠂⠀⠼⠉⠂⠀⠼⠙⠸⠜"); } #[test] fn set_10_3() { let expr = "

3 \in A \cap B

"; test_braille("UEB", expr, "⠼⠉⠀⠘⠑⠀⠠⠁⠨⠦⠠⠃"); } #[test] fn set_10_4() { let expr = "

A \cap B \subset A \cup B

"; test_braille("UEB", expr, "⠠⠁⠨⠦⠠⠃⠀⠘⠣⠀⠠⠁⠨⠖⠠⠃"); } #[test] fn set_10_5() { let expr = "

A^{'} \cup B^{'} = {(A \cap B)}^{'}

"; test_braille("UEB", expr, "⠰⠰⠰⠠⠁⠶⠨⠖⠠⠃⠶⠀⠐⠶⠀⠐⠣⠠⠁⠨⠦⠠⠃⠐⠜⠶⠰⠄"); } #[test] fn set_10_6() { // Note: example uses the wrong char "├" in the display -- should be "⊢" let expr = "

[(p \lor q) \land \neg p] ⊢ q

"; // Acceptable: GTM does uses a G1 passage indicator: "⠰⠰⠰⠨⠣⠐⠣⠏⠈⠖⠟⠐⠜⠈⠦⠈⠹⠏⠨⠜⠀⠸⠒⠀⠟⠰⠄" // However, the BANA G1 standing alone rule ("...before a single letter standing alone") applies, so start in G2 mode. // Corrected to remove the passage indicator test_braille("UEB", expr, "⠨⠣⠐⠣⠏⠈⠖⠟⠐⠜⠈⠦⠈⠹⠏⠨⠜⠀⠸⠒⠀⠰⠟"); } #[test] fn example_11_5_1_2() { let expr = "

\frac{d y}{d x}

"; test_braille("UEB", expr, "⠰⠰⠷⠙⠽⠨⠌⠙⠭⠾"); } #[test] fn example_11_5_1_3() { let expr = "

f' (x)

"; // Acceptable: GTM uses a G1 start indicator: "⠰⠰⠋⠶⠐⠣⠭⠐⠜" // However, BANA says don't use a word indicator if G1 is in first 3 cells (the ':' needs it) // Corrected to avoid word indicator test_braille("UEB", expr, "⠋⠰⠶⠐⠣⠭⠐⠜"); } #[test] fn example_11_5_1_4() { let expr = "

\frac{\partial y}{\partial x}

"; test_braille("UEB", expr, "⠰⠰⠷⠈⠙⠽⠨⠌⠈⠙⠭⠾"); } #[test] fn example_11_5_2() { let expr = "

\int_{2}^{3} (2 x + 1) d x = {[x^{2} + x]}_{2}^{3} = (3^{2} + 3) - (2^{2} + 2) = 12 - 6 = 6

"; test_braille("UEB", expr, "⠰⠰⠰⠮⠢⠼⠃⠔⠼⠉⠐⠣⠼⠃⠭⠐⠖⠼⠁⠐⠜⠙⠭⠀⠐⠶⠀⠨⠣⠭⠔⠼⠃⠐⠖⠭⠨⠜⠢⠼⠃⠔⠼⠉⠀⠐⠶⠀⠐⠣⠼⠉⠔⠼⠃⠐⠖⠼⠉⠐⠜⠐⠤⠐⠣⠼⠃⠔⠼⠃⠐⠖⠼⠃⠐⠜⠀⠐⠶⠀⠼⠁⠃⠐⠤⠼⠋⠀⠐⠶⠀⠼⠋⠰⠄"); } #[test] fn example_11_5_3() { // from MathJaX let expr = "

^{n} C_{r} = (\binom{n}{r}) = \frac{n!}{r! (n - r)!}

"; // modified to use "shape" as recommended in a comment on this example test_braille("UEB", expr, "⠰⠰⠰⠔⠝⠠⠉⠢⠗⠀⠐⠶⠀⠐⠣⠝⠰⠻⠗⠐⠜⠀⠐⠶⠀⠷⠝⠖⠨⠌⠗⠖⠐⠣⠝⠐⠤⠗⠐⠜⠖⠾⠰⠄"); } #[test] fn example_11_5_4() { let expr = "

a * (b ◦ c) = (a * b) ◦ (a * c)

"; test_braille("UEB", expr, "⠁⠐⠔⠐⠣⠃⠐⠴⠉⠐⠜⠀⠐⠶⠀⠐⠣⠁⠐⠔⠃⠐⠜⠐⠴⠐⠣⠁⠐⠔⠉⠐⠜"); } #[test] fn example_11_5_5_2() { let expr = "

f^{- 1} : Y \to X

"; test_braille("UEB", expr, "⠰⠰⠰⠋⠔⠣⠐⠤⠼⠁⠜⠒⠀⠠⠽⠀⠳⠕⠀⠠⠭⠰⠄"); } #[test] fn example_11_5_5_3() { // this comes from MathJax let expr = "

\forall y \in Y \exists x \in X

"; test_braille("UEB", expr, "⠰⠰⠰⠘⠁⠽⠀⠘⠑⠀⠠⠽⠀⠘⠢⠭⠀⠘⠑⠀⠠⠭⠰⠄"); } #[test] fn example_11_5_6() { let expr = "

{(x, y) | x + y = 6}

"; test_braille("UEB", expr, "⠰⠰⠰⠸⠣⠐⠣⠭⠂⠀⠽⠐⠜⠀⠸⠳⠀⠭⠐⠖⠽⠀⠐⠶⠀⠼⠋⠸⠜⠰⠄"); } #[test] fn example_11_6_math_variant() { let expr = "

R

"; test_braille("UEB", expr, "⠈⠆⠰⠠⠗"); } #[test] fn example_11_6() { let expr = "

ℜ

"; test_braille("UEB", expr, "⠈⠆⠰⠠⠗"); } #[test] fn bar_over_12_1_1() { let expr = "

\overline{x} = \frac{10 + 11 + 12}{3}

"; test_braille("UEB", expr, "⠰⠰⠰⠭⠱⠀⠐⠶⠀⠷⠼⠁⠚⠐⠖⠼⠁⠁⠐⠖⠼⠁⠃⠨⠌⠼⠉⠾⠰⠄"); } #[test] fn bar_under_12_1_2() { let expr = "

\underline{x + y}

"; test_braille("UEB", expr, "⠰⠰⠣⠭⠐⠖⠽⠜⠠⠱"); } #[test] fn bar_menclose_12_1_2() { let expr = "

x + y

"; test_braille("UEB", expr, "⠰⠰⠣⠭⠐⠖⠽⠜⠠⠱"); } #[test] fn dot_12_1_4() { let expr = "

0 . \dot{3}

"; test_braille("UEB", expr, "⠼⠚⠲⠣⠼⠉⠜⠘⠲"); } #[test] fn dot_12_1_5() { let expr = "

0.56 \dot{1} 2 \dot{3}

"; test_braille("UEB", expr, "⠼⠚⠲⠑⠋⠣⠼⠁⠜⠘⠲⠼⠃⠣⠼⠉⠜⠘⠲"); } #[test] fn dot_12_1_6_single() { let expr = "

\dot{x}

"; test_braille("UEB", expr, "⠭⠘⠲"); } #[test] fn dot_12_1_6_double() { let expr = "

\ddot{x}

"; test_braille("UEB", expr, "⠰⠰⠭⠨⠔⠣⠲⠲⠜"); } #[test] fn hat_12_1_7() { let expr = "

A \hat{B} C

"; // Acceptable: GTM uses a G1 start indicator: "⠰⠰⠠⠁⠠⠃⠐⠱⠠⠉" // BANA says use a word indicator if G1 not in first 3 cells (modified it to not count cap indicators since that helps with GTM compatibility) // Corrected to skip the G1 indicator at the start (it's debatable as to which is better) test_braille("UEB", expr, "⠠⠁⠠⠃⠰⠐⠱⠠⠉"); } #[test] fn arrow_over_12() { // This comes from https://uebonline.org/wp-content/uploads/2021/05/Unified-English-Braille-Extension-Maths-Training-Manual-First-Edition-Rev-4.pdf let expr = "

\vec{x}

"; test_braille("UEB", expr, "⠭⠰⠘⠱"); } #[test] fn arrow_under_12() { // This comes from https://uebonline.org/wp-content/uploads/2021/05/Unified-English-Braille-Extension-Maths-Training-Manual-First-Edition-Rev-4.pdf let expr = "

\underset{\to}{x}

"; test_braille("UEB", expr, "⠭⠰⠠⠘⠱"); } #[test] fn bar_12_2_1() { let expr = "

x^{\bar{y}}

"; test_braille("UEB", expr, "⠰⠰⠭⠔⠣⠽⠱⠜"); } #[test] fn bar_12_2_2() { let expr = "

\bar{x^{y}}

"; test_braille("UEB", expr, "⠰⠰⠣⠭⠔⠽⠜⠱"); } #[test] fn shape_14_1_1_1() { let expr = "

△ ABC

"; test_braille("UEB", expr, "⠰⠫⠼⠉⠀⠠⠠⠁⠃⠉"); } #[test] fn shape_14_1_2_1() { let expr = "

△ ABC

"; test_braille("UEB", expr, "⠰⠫⠼⠉⠱⠠⠠⠁⠃⠉"); } #[test] fn shape_14_1_2_2() { // the for the shapes are wrong -- but it isn't clear what they should be (from WIRIS editor) let expr = "

{□, ◍, ▲, ▧ \dots}

"; test_braille("UEB", expr, "⠸⠣⠰⠫⠼⠙⠱⠂⠀⠨⠫⠿⠱⠂⠀⠸⠫⠼⠉⠱⠂⠀⠨⠫⠼⠙⠀⠲⠲⠲⠸⠜"); } #[test] fn binomial_14_3_3_2() { let expr = "

(\binom{n}{r})

"; test_braille("UEB", expr, "⠐⠣⠝⠰⠻⠗⠐⠜"); } #[test] fn binomial_14_3_3_2_mtable() { let expr = "

(\begin{matrix} n \\ r \end{matrix})

"; test_braille("UEB", expr, "⠐⠣⠝⠰⠻⠗⠐⠜"); } #[test] fn chem_16_2_8() { let expr = "

Ca {(OH)}_{2}

"; // Acceptable: GTM does not use a G1 start indicator: "⠠⠉⠁⠐⠣⠠⠕⠠⠓⠐⠜⠰⠢⠼⠃" // However, BANA says use a word indicator if G1 not in first 3 cells (it is before the subscript near the end); use passage if >=2 whitespace // This seems like a debateable choice in this case since there is only one G1 indicator, but that's the BANA guidance so... // Corrected to use word indicator test_braille("UEB", expr, "⠰⠰⠠⠉⠁⠐⠣⠠⠕⠠⠓⠐⠜⠢⠼⠃"); } #[test] fn chem_16_2_9() { // from mhchem -- \ce{CuSO4·5H2O} let expr = "

CuSO_{4} \cdot 5 H_{2} O

"; // Acceptable: GTM does not use a G1 start indicator: "⠠⠉⠥⠠⠎⠠⠕⠰⠢⠼⠙⠐⠲⠼⠑⠠⠓⠢⠼⠃⠠⠕" // However, BANA says use a word indicator if G1 not in first 3 cells (it is before the subscript); use passage if >=2 whitespace // This seems like a debatable choice in this case since there is only one G1 indicator, but that's the BANA guidance so... // Corrected to use word indicator test_braille("UEB", expr, "⠰⠰⠠⠉⠥⠠⠎⠠⠕⠢⠼⠙⠐⠲⠼⠑⠠⠓⠢⠼⠃⠠⠕"); } #[test] fn chem_16_2_10() { let expr = "

H^{+}

"; test_braille("UEB", expr, "⠠⠓⠰⠔⠐⠖"); } #[test] fn chem_16_2_11() { let expr = "

S O_{4}^{- -}

"; test_braille("UEB", expr, "⠠⠎⠠⠕⠰⠢⠼⠙⠔⠣⠐⠤⠐⠤⠜"); } #[test] fn chem_16_2_12() { // from MathJax/mhchem V3 let expr = "

R \cdot CH (OH) \cdot CH_{2} \cdot CH_{2} \cdot CO_{2} H

"; // GTM uses G2 mode and has two G1 indicators (in middle and near end). That definitely violates BANA guidelines and maybe there guidelines. // I have switched it to G1 word mode, which seems better (same length, but no switching) test_braille("UEB", expr, "⠰⠰⠠⠠⠠⠗⠐⠲⠉⠓⠐⠣⠕⠓⠐⠜⠐⠲⠉⠓⠢⠼⠃⠐⠲⠉⠓⠢⠼⠃⠐⠲⠉⠕⠢⠼⠃⠰⠓⠠⠄"); } #[test] fn chem_16_2_13() { let expr = "

{Fe}^{III} {Cl}_{3}

"; test_braille("UEB", expr, "⠰⠰⠠⠋⠑⠔⠣⠠⠠⠊⠊⠊⠜⠠⠉⠇⠢⠼⠉"); } #[test] fn chem_16_3_1() { // see also pre_msubsup_7_8_1 which uses mmultiscripts // from MathJax let expr = "

_{92}^{238} U

"; test_braille("UEB", expr, "⠰⠢⠼⠊⠃⠔⠼⠃⠉⠓⠠⠥"); } #[test] fn chem_16_4_2() { // from MathJax let expr = r#"

^{1} S_{0}

"#; test_braille("UEB", expr, "⠰⠔⠼⠁⠠⠎⠢⠼⠚"); } #[test] fn chem_16_4_3() { // from MathJax using \mathrm{} let expr = r#"

4 d^{9} 5 s^{2}^{2} D_{5 / 2}

"#; test_braille("UEB", expr, "⠼⠙⠰⠙⠔⠼⠊⠼⠑⠎⠔⠼⠃⠀⠰⠔⠼⠃⠠⠙⠢⠣⠼⠑⠸⠌⠼⠃⠜"); } #[test] fn chem_16_5_1() { // from MathJax v3 mhchem, but substituted short arrow because that is what example uses (although it shouldn't) let expr = r#"

2 NaOH + H_{2} SO_{4} \to Na_{2} SO_{4} + 2 H_{2} O

"#; test_braille("UEB", expr, "⠰⠰⠰⠼⠃⠠⠝⠁⠠⠕⠠⠓⠐⠖⠠⠓⠢⠼⠃⠠⠎⠠⠕⠢⠼⠙⠀⠳⠕⠀⠠⠝⠁⠢⠼⠃⠠⠎⠠⠕⠢⠼⠙⠐⠖⠼⠃⠠⠓⠢⠼⠃⠠⠕⠰⠄"); } #[test] fn chem_16_5_2() { // from WIRIS let expr = r#"

N_{2} \to_{Haber process}^{H_{2}} N H_{3}

"#; // GTM has the order be over followed by under. This is opposite of what is shown in 7.9 (which are large op examples). // I have spoken with several people about this, including ICEB committee members who all feel this example is a mistake. // I have adjusted the expected output test_braille("UEB", expr, "⠰⠰⠰⠠⠝⠢⠼⠃⠀⠳⠕⠨⠢⠣⠠⠓⠁⠃⠑⠗⠀⠏⠗⠕⠉⠑⠎⠎⠜⠨⠔⠣⠠⠓⠢⠼⠃⠜⠀⠠⠝⠠⠓⠢⠼⠉⠰⠄"); } #[test] fn chem_16_5_3() { // from MathJax v3 mhchem, uses "\;" before parens because example adds a space there (although it shouldn't) let expr = r#"

H_{2} (g) + I_{2} (s) = 2 HI (g)

"#; test_braille("UEB", expr, "⠰⠰⠰⠠⠓⠢⠼⠃⠀⠐⠣⠛⠐⠜⠐⠖⠠⠊⠢⠼⠃⠀⠐⠣⠎⠐⠜⠀⠐⠶⠀⠼⠃⠠⠓⠠⠊⠀⠐⠣⠛⠐⠜⠰⠄"); } #[test] fn chem_16_5_4() { // from MathJax v4 mhchem, but substituted short arrow because that is what example uses (although it shouldn't) let expr = r#"

HNCO + ROH \to NH_{2} \cdot CO \cdot OR \to NH_{2} CO \cdot NH \cdot CO_{2} R

"#; test_braille("UEB", expr, "⠰⠰⠰⠠⠠⠠⠓⠝⠉⠕⠐⠖⠗⠕⠓⠀⠳⠕⠀⠝⠓⠢⠼⠃⠐⠲⠉⠕⠐⠲⠕⠗⠀⠳⠕⠀⠝⠓⠢⠼⠃⠰⠉⠕⠐⠲⠝⠓⠐⠲⠉⠕⠢⠼⠃⠗⠠⠄⠰⠄"); } #[test] fn chem_16_5_5() { // from MathJax v3 mhchem let expr = r#"

Pb^{+ +} + 2 e \overset{- ⇀}{↽ -} Pb

"#; test_braille("UEB", expr, "⠰⠰⠰⠠⠏⠃⠔⠣⠐⠖⠐⠖⠜⠐⠖⠼⠃⠰⠑⠀⠘⠸⠶⠀⠠⠏⠃⠰⠄"); }