133 lines
7.9 KiB
Bash
133 lines
7.9 KiB
Bash
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#!/bin/bash
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#
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# escape_test.sh — Regression tests for the Klammermachine's target character
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# escaping MECHANISM.
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#
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# Kept SKS-INDEPENDENT on purpose: tst/ tests the engine only (mac/target.cpp,
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# mac/machine.cpp), not the SKS. A target is a MACHINE construct — declared
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# with the @@@target system command, not owned by any klammer set — so the
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# idiomatic engine-level test defines its own fixture target inline and loads
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# no klammer set (`-k none`); it does not "avoid" the SKS so much as have no
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# need of it. Target `t` here escapes `& -> AMP`, `_ -> UND`, `\ -> BSL`
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# (arbitrary tokens, easy to assert). The SKS's own targets (tex, html) and
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# the specific characters they declare are exercised by the SKS suite.
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#
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# The `:escape` parameter on `@@@target` declares characters special in a
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# target's output and their replacements. Escaping must reach writer content
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# wherever it appears — including the body of a GENERAL klammer (no target
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# suffix), which is target-agnostic writer text — while leaving target-native
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# content alone:
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#
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# - general klammer body -> writer content, ESCAPE it
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# - target-specific body (.t) -> already in target form, LEAVE it
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# - ^'...'^ literal span -> raw target markup, LEAVE it
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# - nested target-native klammer -> e.g. @n@ -> \newline, LEAVE it
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# - @eval/@read/@cond arg span -> code/path/predicate, LEAVE it
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# - klammer-producing @eval result -> klammer output, LEAVE it
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#
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# Cases 8-9 pin a regression: escaping a general klammer body once corrupted
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# the @eval CODE inside it (an underscore in "offer.Price_list(K)" became a
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# KTESC marker -> Python AttributeError). Only the general body's own literal
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# writer text is escaped; @eval/@read/@cond argument spans (code, filenames,
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# predicates) are skipped, and the Klammertext a nested @eval produces is
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# klammer output, not writer text, so it is never escaped. Mechanism:
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# Klammer::m_body_generic + the hook in Machine::apply_klammer; see the
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# "Target character escaping" section of CLAUDE.md.
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#
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# Usage: ./escape_test.sh (needs KLAMMERTEXT_HOME set; ktext on PATH)
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# Exit code: 0 if all tests pass, 1 otherwise.
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PASS=0
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FAIL=0
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KTEXT=ktext
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K=${KLAMMERTEXT_HOME:?KLAMMERTEXT_HOME must be set}
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ERR=/tmp/escape_test_err.$$
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red=$'\033[31m'
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green=$'\033[32m'
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bold=$'\033[1m'
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reset=$'\033[0m'
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# strip leading/trailing blank lines and trailing whitespace
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trim() { awk '{ sub(/[ \t\r]+$/, "") } { line[NR]=$0 } END { f=1; while (f<=NR && line[f]=="") f++; l=NR; while (l>=1 && line[l]=="") l--; for (i=f;i<=l;i++) print line[i] }'; }
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# check_eq NAME EXPECTED KTEXT_ARGS... — exit 0 and stdout==EXPECTED.
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check_eq() {
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local name="$1" expected="$2"; shift 2
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local out status err
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out=$("$KTEXT" "$@" 2>"$ERR"); status=$?
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err=$(cat "$ERR")
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out=$(printf '%s' "$out" | trim)
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if [ $status -ne 0 ]; then
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echo "${red}FAIL${reset} $name — ktext exited $status"
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echo " stderr: $(echo "$err" | head -2)"; FAIL=$((FAIL+1)); return
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fi
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if [ "$out" = "$expected" ]; then
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echo "${green}PASS${reset} $name"; PASS=$((PASS+1))
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else
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echo "${red}FAIL${reset} $name"
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echo " expected: [$expected]"; echo " got: [$out]"; FAIL=$((FAIL+1))
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fi
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}
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echo "${bold}Target character escaping tests (Machine mechanism, fixture target 't')${reset}"
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echo "======================================================================="
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echo
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# A self-contained fixture target, defined inline via the @@@target system
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# command, escaping & _ \ to distinct tokens. -k none loads no klammer set,
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# so nothing below depends on the SKS.
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T='@@@target t | test target :escape & AMP _ UND \ BSL @@@'
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check_eq " 1. top-level text: & escaped" 'A AMP B' -k none -t t -s "$T A & B"
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check_eq " 2. general klammer body: & escaped" 'A AMP B' -k none -t t -s "$T @@g : A & B @@ @g@"
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check_eq " 3. general klammer body: _ escaped" 'AUNDB' -k none -t t -s "$T @@g : A_B @@ @g@"
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check_eq " 4. general klammer body: backslash escaped" 'aBSLb' -k none -t t -s "$T @@g : a\\b @@ @g@"
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check_eq " 5. target-specific body: NOT escaped" 'A & B' -k none -t t -s "$T @@g.k : d @@ @@g.t :: A & B @@ @g@"
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check_eq " 6. general body ^'...'^ literal: NOT escaped" 'a&b' -k none -t t -s "$T @@g : ^'a&b'^ @@ @g@"
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check_eq " 7. nested target-native klammer survives escape" 'X AMP Y \newline Z' -k none -t t -s "$T @@n.t : \\newline @@ @@g : X & Y @n@ Z @@ @g@"
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# 8-9: @eval inside a general body. Code (with underscores) must not be
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# escaped or Python breaks; the Klammertext it returns is klammer output and
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# must not be escaped either. chr(64) builds a literal '@' so the returned
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# klammer call is not parsed as one in this source line.
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check_eq " 8. general body @eval code NOT escaped" '3' -k none -t t -s "$T @@g : @eval (1).__add__(2) @ @@ @g@"
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check_eq " 9. general body @eval klammer result NOT escaped" '\textbf{hi}' -k none -t t -s "$T @@b.k s : d @@ @@b.t :: \\textbf{*s*} @@ @@g : @eval chr(64)+'b hi '+chr(64) @ @@ @g@"
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# 10-11: an @eval result that still holds klammers is a GENERATOR (Klammertext
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# with data) -- its writer text is escaped for the target before the klammers
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# are applied; a result with no klammers is a RENDERER (final markup) -- left
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# untouched. The signal is "does the read-back result contain a klammer".
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check_eq "10. @eval generator: klammer result's data escaped" '[a AMP b]' -k none -t t -s "$T @@wrap z : [*z*] @@ @@g : @eval chr(64)+'wrap a & b '+chr(64) @ @@ @g@"
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check_eq "11. @eval renderer: final markup NOT escaped" 'raw & markup' -k none -t t -s "$T @@g : @eval 'raw & markup' @ @@ @g@"
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# 12-18: quoted KLAMMERTEXT specials (^@ ^| ^# ^^ ^: ^*) and ^'...'^ literal
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# regions. The katomizer strips the "^"; hide_special_katoms() and
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# mark_literal_katoms() then hold the character as a KTESC marker so it stays
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# inert through sub-Machine re-katomization and the @eval result read-back,
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# resolving to the literal character at final processing. Regression: after
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# the marker mechanism replaced the old hide/restore pass, a quoted "@"
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# leaked as a bare apply-end katom into re-read text ("A klammer ends
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# without a beginning"). Exact-match expectations also guard against KTESC
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# markers leaking into output.
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check_eq "12. quoted @ | # resolve to the characters" 'x @ | # y' -k none -t t -s "$T x ^@ ^| ^# y"
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check_eq "13. quoted ^ : * resolve to the characters" 'x ^ : * y' -k none -t t -s "$T x ^^ ^: ^* y"
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check_eq "14. ^'...'^ region: specials stay literal" 'a @ | b' -k none -t t -s "$T a ^' @ | '^ b"
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check_eq "15. general body: quoted @ resolves" 'x @ y' -k none -t t -s "$T @@g : x ^@ y @@ @g@"
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# 16: inside an @eval argument span a quoted special reaches the CODE as the
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# character (the span is skipped by hide_special_katoms, like the escape pass).
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check_eq "16. @eval code: quoted : reaches shell as ':'" 'x:y' -k none -t t -s "$T @@g : @eval :shell echo x^:y @ @@ @g@"
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# 17: an @eval result emitting the two characters ^ @ is re-read as a quoted
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# special and survives to the output as a literal @ (the generator idiom for
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# a literal @; a bare @ in a result is a parse error by design).
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check_eq "17. @eval result ^@ survives read-back as @" '@' -k none -t t -s "$T @@g : @eval chr(94)+chr(64) @ @@ @g@"
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# 18: a bare-Python :after_apply phase receives the RESOLVED result text
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# (K_result) and its return is taken as raw target text, not re-read as
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# Klammertext -- a resolved @ in the result must not be re-parsed.
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check_eq "18. :after_apply phase: raw result, @ intact" 'A @ B' -k none -t u -s '@@@target u | up :after_apply string.capwords @@@ a ^@ b'
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rm -f "$ERR"
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echo
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echo "============================================"
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echo "Results: ${green}$PASS passed${reset}, ${red}$FAIL failed${reset}"
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[ $FAIL -eq 0 ]
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