Ichthyostega
a9cbe7eb90
...implemented as »custom processing layer« within a demand-driven parsing pipeline, with the ability to inject additional Action-tokens to represent the intermittent constant text between tags; special handling to expose one constant postfix after the last active tag.
263 lines
10 KiB
C++
263 lines
10 KiB
C++
/*
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TextTemplate(Test) - verify the minimalistic text substitution engine
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Copyright (C) Lumiera.org
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2024, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* *****************************************************/
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/** @file text-template-test.cpp
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** unit test \ref TextTemplate_test
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*/
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#include "lib/test/run.hpp"
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#include "lib/test/test-helper.hpp"///////////////////////TODO
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#include "lib/text-template.hpp"
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#include "lib/format-string.hpp"
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#include "lib/format-cout.hpp"///////////////////////TODO
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#include "lib/test/diagnostic-output.hpp"///////////////////////TODO
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#include "lib/stat/csv.hpp"
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//#include <chrono>
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//#include <array>
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#include <map>
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//using std::array;
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using std::regex_search;
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using std::smatch;
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using util::_Fmt;
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namespace lib {
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namespace test {
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using MapS = std::map<string, string>;
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/***************************************************************************//**
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* @test verify a minimalistic text substitution engine with flexible
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* data binding, used for tool integration and script generation
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* - cover the core parsing and templating functionality,
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* using a direct binding
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* - demonstrate the default-binding for a data map
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* - cover the binding to Lumiera's »External Tree Description«
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* @see text-template.hpp
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* @see GnuplotGen_test
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*/
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class TextTemplate_test : public Test
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{
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virtual void
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run (Arg)
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{
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// simpeUsage();
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verify_parsing();
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verify_instantiation();
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verify_keySubstituton();
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verify_conditional();
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verify_iteration();
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verify_Map_binding();
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verify_ETD_binding();
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}
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/** @test TODO simple point-and-shot usage...
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* @todo WIP 4/24 ✔ define ⟶ 🔁 implement
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*/
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void
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simpeUsage()
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{
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MapS snaps{{"whatever", "cruel world"}
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,{"greeting", "farewell"}};
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CHECK (TextTemplate::apply ("${greeting} ${whatever} ↯", snaps)
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== "farewell cruel world ↯"_expect);
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}
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/** @test TODO
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* @note the regular expression \ref ACCEPT_FIELD is comprised of several
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* alternatives and optional parts, which are marked by 5 sub-expressions
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* - 1 ≙ an escaped field (which should not be processed)
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* - 2 ≙ else token (which must be solitary)
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* - 3 ≙ end token
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* - 4 ≙ some logic token ("if" or "for")
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* - 5 ≙ a key or key path
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* @todo WIP 4/24 🔁 define ⟶ implement
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*/
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void
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verify_parsing()
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{
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smatch mat;
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string input;
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CHECK (not regex_search (input, mat, ACCEPT_MARKUP));
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input = " Hallelujah ";
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CHECK (not regex_search (input, mat, ACCEPT_MARKUP)); // walk away ... nothing to see here...
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input = " stale${beer}forever";
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CHECK (regex_search (input, mat, ACCEPT_MARKUP));
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CHECK (mat.position() == 6);
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CHECK (mat.length() == 7);
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CHECK (mat.prefix() == " stale"_expect);
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CHECK (mat.suffix() == "forever"_expect);
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CHECK (mat[0] == "${beer}"_expect); // so this first example demonstrates placeholder recognition
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CHECK (not mat[1].matched); // Sub-1 : this is not an escaped pattern
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CHECK (not mat[2].matched); // Sub-2 : this pattern does not start with "else"
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CHECK (not mat[3].matched); // Sub-3 : no "end" keyword
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CHECK (not mat[4].matched); // Sub-4 : no further logic syntax
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CHECK (mat[5] == "beer"_expect); // Sub-5 : extracts the Key ID
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input = " watch ${for stale}${beer} whatever ";
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CHECK (regex_search (input, mat, ACCEPT_MARKUP));
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CHECK (mat.position() == 7);
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CHECK (mat.length() == 12);
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CHECK (mat.prefix() == " watch "_expect);
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CHECK (mat.suffix() == "${beer} whatever "_expect); // (performing only one search here...)
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CHECK (mat[0] == "${for stale}"_expect); // Matched a regular opening iteration tag
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CHECK (not mat[2].matched); // Sub-2 does not trigger, since there is no "else" mark
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CHECK (not mat[3].matched); // Sub-3 does not trigger, no end mark either
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CHECK (mat[4] == "for"_expect); // Sub-4 picks the "for" keyword
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CHECK (mat[5] == "stale"_expect); // Sub-5 extracts a simple Key ≡ "stale"
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input = " work ${ end if beer \t } however ";
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CHECK (regex_search (input, mat, ACCEPT_MARKUP));
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CHECK (mat.position() == 6);
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CHECK (mat.length() == 19);
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CHECK (mat.prefix() == " work "_expect);
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CHECK (mat.suffix() == " however "_expect);
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CHECK (mat[0] == "${ end if beer \t }"_expect); // A regular end marker of an conditional
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CHECK (mat[3] == "end "_expect); // Sub-3 triggers on the "end" token
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CHECK (mat[4] == "if"_expect); // Sub-4 picks the "if" keyword
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CHECK (mat[5] == "beer"_expect); // Sub-5 extracts a simple Key ≡ "beer"
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input = " catch ${endgame stale}${endfor brown.beer} ever ";
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CHECK (regex_search (input, mat, ACCEPT_MARKUP));
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CHECK (mat.position() == 23);
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CHECK (mat.length() == 20);
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CHECK (mat.prefix() == " catch ${endgame stale}"_expect);// "while" is no valid keyword at the second position of the syntax
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CHECK (mat.suffix() == " ever "_expect);
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CHECK (mat[0] == "${endfor brown.beer}"_expect); // ...thus search proceeds to match on the second pattern installment
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CHECK (mat[3] == "end"_expect); // Sub-3 triggers on the "end" token
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CHECK (mat[4] == "for"_expect); // Sub-4 picks the "for" keyword
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CHECK (mat[5] == "brown.beer"_expect); // Sub-5 extracts a hierarchical key ID
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input = " catch ${else} ever ";
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CHECK (regex_search (input, mat, ACCEPT_MARKUP));
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CHECK (mat.position() == 7);
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CHECK (mat.length() == 7);
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CHECK (mat.prefix() == " catch "_expect);
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CHECK (mat.suffix() == " ever "_expect);
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CHECK (mat[0] == "${else}"_expect); // Standard match on an "else"-tag
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CHECK (mat[2] == "else"_expect); // Sub-2 confirmed a solitary "else" keyword
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CHECK (not mat[1].matched);
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CHECK (not mat[3].matched);
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CHECK (not mat[4].matched);
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CHECK (not mat[5].matched);
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input = " catch ${else if} fever \\${can.beer} ";
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CHECK (regex_search (input, mat, ACCEPT_MARKUP));
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CHECK (mat.position() == 24);
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CHECK (mat.length() == 2);
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CHECK (mat.prefix() == " catch ${else if} fever "_expect); // Note: first pattern does not match as "else" must be solitary
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CHECK (mat.suffix() == "{can.beer} "_expect); // Note: the following braced expression is tossed aside
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CHECK (mat[0] == "\\$"_expect); // Only the escaped pattern mark opening is picked up
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CHECK (not mat[2].matched);
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CHECK (not mat[3].matched);
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CHECK (not mat[4].matched);
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CHECK (not mat[5].matched);
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CHECK (mat[1] == "\\$"_expect); // Sub-1 picks the escaped mark (and the remainder is no complete tag)
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// Demonstration: can use this regular expression in a matching pipeline....
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input = "one ${two} three \\${four} ${if high} five";
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CHECK (util::join(
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explore (util::RegexSearchIter{input, ACCEPT_MARKUP})
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.transform ([](smatch mat){ return mat.str(); }))
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==
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"${two}, \\$, ${if high}"_expect);
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auto render = [](TagSyntax& tag) -> string
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{ return _Fmt{"▶%s‖%d|%s‖▷"} % string{tag.lead} % uint(tag.syntax) % tag.key; };
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auto wau = parse(input)
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.transform(render);
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SHOW_EXPR(util::join(wau))
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}
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/** @test TODO
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* @todo WIP 4/24 🔁 define ⟶ implement
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*/
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void
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verify_instantiation()
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{
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}
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/** @test TODO
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* @todo WIP 4/24 🔁 define ⟶ implement
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*/
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void
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verify_keySubstituton()
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{
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UNIMPLEMENTED ("nebbich");
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}
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/** @test TODO
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* @todo WIP 4/24 🔁 define ⟶ implement
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*/
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void
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verify_conditional()
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{
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}
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/** @test TODO
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* @todo WIP 4/24 🔁 define ⟶ implement
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*/
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void
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verify_iteration()
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{
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}
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/** @test TODO
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* @todo WIP 4/24 🔁 define ⟶ implement
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*/
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void
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verify_Map_binding()
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{
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}
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/** @test TODO
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* @todo WIP 4/24 🔁 define ⟶ implement
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*/
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void
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verify_ETD_binding()
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{
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}
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};
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LAUNCHER (TextTemplate_test, "unit common");
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}} // namespace lib::test
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