Slightly hacky but good enough math rendering in emacs 🪄
add basic tests
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mathrender-test.el
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mathrender-test.el
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;;; mathrender-test.el --- Tests for mathrender.el -*- lexical-binding: t; -*-
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(require 'ert)
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(require 'mathrender (expand-file-name "mathrender.el"))
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(ert-deftest mathrender-test-scan-display-math ()
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"Test scanning of $$...$$ display math blocks."
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(with-temp-buffer
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(insert "Text before $$ a^2 + b^2 = c^2 $$ text after.")
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(mathrender--scan (point-min) (point-max))
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(let ((ovs (overlays-in (point-min) (point-max))))
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;; 1 overlay created
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(should (= (length ovs) 1))
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;; Starts and ends exactly at the $$ delimiters
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(should (= (overlay-start (car ovs)) 13))
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(should (= (overlay-end (car ovs)) 34))
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(should (overlay-get (car ovs) 'mathrender-preview)))))
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(ert-deftest mathrender-test-scan-inline-math ()
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"Test scanning of $...$ inline math blocks."
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(with-temp-buffer
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(insert "Inline $x=1$ math.")
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(mathrender--scan (point-min) (point-max))
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(let ((ovs (overlays-in (point-min) (point-max))))
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(should (= (length ovs) 1))
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(should (= (overlay-start (car ovs)) 8))
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(should (= (overlay-end (car ovs)) 13)))))
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(ert-deftest mathrender-test-scan-reject-invalid-single-dollar ()
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"Test that single dollars used as currency or with invalid spacing are rejected."
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(with-temp-buffer
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;; Invalid because there's a space after the first $, or it's a currency amount
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(insert "I have $ 5.00 and $10.00.")
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(mathrender--scan (point-min) (point-max))
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(let ((ovs (overlays-in (point-min) (point-max))))
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(should (= (length ovs) 0)))))
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(ert-deftest mathrender-test-parse-overlay ()
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"Test that an overlay correctly extracts math text and inline status."
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(with-temp-buffer
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(insert "$$ \\int_0^1 x dx $$")
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(let ((ov (mathrender--make-overlay (point-min) (point-max))))
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(let ((parsed (mathrender--parse-overlay ov)))
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(should (equal (car parsed) "\\int_0^1 x dx"))
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(should (equal (cdr parsed) nil)))))) ; nil means display math
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(provide 'mathrender-test)
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;;; mathrender-test.el ends here
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src/main.rs
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src/main.rs
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std::process::exit(1);
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_safe_tex2typst() {
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let mut buf = String::new();
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safe_tex2typst("x = 1", &mut buf);
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assert!(buf.contains("x = 1"));
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}
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#[test]
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fn test_convert_matrix() {
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let mut buf = String::new();
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env_matrix_convert("pmatrix", "1 & 2 \\\\ 3 & 4", &mut buf);
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assert_eq!(buf, "mat(1, 2; 3, 4)");
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}
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#[test]
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fn test_convert_cases() {
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let mut buf = String::new();
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env_cases_convert("x & y \\\\ a & b", &mut buf);
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assert!(buf.contains("cases("));
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assert!(buf.contains("x"));
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assert!(buf.contains("y"));
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}
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#[test]
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fn test_latex_to_typst() {
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let input = "x + \\begin{pmatrix} 1 & 2 \\\\ 3 & 4 \\end{pmatrix} = y";
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let result = latex_to_typst(input);
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assert!(result.contains("mat(1, 2; 3, 4)"));
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}
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}