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templatel-tests.el
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templatel-tests.el
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;;; templatel-tests --- Templating language for Emacs-Lisp; -*- lexical-binding: t -*-
;;
;; Author: Lincoln Clarete <[email protected]>
;;
;; Copyright (C) 2020-2021 Lincoln Clarete
;;
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;
;;; Commentary:
;;
;;
;;; Code:
(require 'ert)
(require 'cl-lib)
(require 'templatel)
;; --- Error ---
(ert-deftest err-parse-incomplete ()
(condition-case err
(templatel-render-string "{% for i in a %}stuff" '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 1,22: Missing endfor statement")))))
(condition-case err
(templatel-render-string "{% for i in a }{% endfor %}" '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 1,15: Statement not closed with \"%}\"")))))
(condition-case err
(templatel-render-string "{% if true %}stuff" '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 1,19: Missing endif statement")))))
(condition-case err
(templatel-render-string "{% if true }{% endif %}" '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 1,12: Statement not closed with \"%}\"")))))
(condition-case err
(templatel-render-string "{% extends \"stuff.html\" }" '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 1,25: Statement not closed with \"%}\"")))))
(condition-case err
(templatel-render-string "{% extends %}" '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 1,12: Missing template name in extends statement")))))
(condition-case err
(templatel-render-string "{% block %}stuff{% endblock %}" '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 1,10: Missing block name")))))
(condition-case err
(templatel-render-string "\n\n{% block blah %}\n\nstuff" '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 5,6: Missing endblock statement")))))
(condition-case err
(templatel-render-string "{{ a + }}" '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 1,8: Missing operand after binary operator")))))
(condition-case err
(templatel-render-string "{{ - }}" '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 1,6: Missing operand after unary operator")))))
(condition-case err
(templatel-render-string "{{ -a " '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 1,7: Unclosed bracket")))))
(condition-case err
(templatel-render-string "{{ -a }" '())
(templatel-error
(should (equal err '(templatel-syntax-error . "<string> at 1,8: Unclosed bracket"))))))
;; --- Operator Precedence ---
(ert-deftest operator-precedence ()
;; attribute access operator has the highest precedence, even over
;; unary operators
(should (equal "-5" (templatel-render-string "{{ -obj.prop }}" '(("obj" . (("prop" . 5)))))))
(should (equal "5" (templatel-render-string "{{ -obj.prop }}" '(("obj" . (("prop" . -5)))))))
;; unary operators have higher precedence than filter operators
(should (equal "5" (templatel-render-string "{{ -5 | abs }}" '())))
;; pipes (for filters) have higher precedence then other binary ops
(should (equal "10" (templatel-render-string "{{ 2 * 3 | plus1 | plus1 }}" '())))
(should (equal "11" (templatel-render-string "{{ (2 * 3 | plus1 | plus1) | plus1 }}" '())))
;; Arithmetic
(should (equal "10" (templatel-render-string "{{ 2 * 3 + 4 }}" '())))
(should (equal "10" (templatel-render-string "{{ 80 / 2 ** 3 }}" '())))
(should (equal "5" (templatel-render-string "{{ 13 % 9 + 1 }}" '())))
(should (equal "5" (templatel-render-string "{{ 2 * 3 + 4 % 2 + 1 - 2 }}" '()))))
;; --- Auto escaping ---
(ert-deftest autoescaping ()
;; Ensure string replacemet function works; thanks to this:
;; https://github.com/pallets/markupsafe/blob/337a79f8caeff25422b28771e851c140d5d744ac/tests/test_escape.py#L6
(dolist (test
'(("" . "")
;; ascii
("abcd&><'\"efgh" . "abcd&><'"efgh")
("&><'\"efgh" . "&><'"efgh")
("abcd&><'\"" . "abcd&><'"")
;; 2 byte
("こんにちは&><'\"こんばんは" . "こんにちは&><'"こんばんは")
("&><'\"こんばんは" . "&><'"こんばんは")
("こんにちは&><'\"" . "こんにちは&><'"")
;; 4 byte
("<🥕 & 🌽 & 🌶>" . "<🥕 & 🌽 & 🌶>")))
(let ((input (car test))
(expected (cdr test)))
(should (equal expected (templatel-escape-string input)))))
;; Comes disabled by default
(should (equal
(templatel-render-string
"<p>{{ post }}</p>"
'(("post" . "<script>alert(1)</script>")))
"<p><script>alert(1)</script></p>"))
;; Can be enabled with the autoescape flag
(should (equal
(templatel-render-string
"<p>{{ post }}</p>"
'(("post" . "<script>alert(1)</script>"))
:autoescape t)
"<p><script>alert(1)</script></p>"))
;; Test out the `safe` filter when auto escaping is enabled; should
;; disable escaping locally
(should (equal
(templatel-render-string
"<p>{{ post|safe }}</p>"
'(("post" . "<script>alert(1)</script>"))
:autoescape t)
"<p><script>alert(1)</script></p>"))
;; Test out the `safe` filter when auto escaping is disabled; should
;; be a no-op
(should (equal
(templatel-render-string
"<p>{{ post|safe }}</p>"
'(("post" . "<script>alert(1)</script>")))
"<p><script>alert(1)</script></p>"))
;; Disable autoescaping
(let ((env (templatel-env-new)))
(templatel-env-set-autoescape env nil)
(templatel-env-add-template env "<string>" (templatel-new "<p>{{ post }}</p>"))
(should (equal
(templatel-env-render env "<string>" '(("post" . "<script>alert(1)</script>")))
"<p><script>alert(1)</script></p>"))))
(ert-deftest autoescaping-blocks ()
;; The base template DID NOT escape the variable
(let ((env (templatel-env-new
:importfn (lambda(e name)
(templatel-env-add-template
e name
(templatel-new "{% block greeting %}Hello {{ name }}{% endblock %}"))))))
(templatel-env-set-autoescape env t)
;; The override that calls super also didn't escape anything
(templatel-env-add-template
env "page.html"
(templatel-new "{% extends \"nav.html\" %}{% block greeting %}{{ super() }} and world{% endblock %}"))
;; The output should be escaped
(should (equal (templatel-env-render env "page.html" '(("name" . "<h1>Title</h1>")))
"Hello <h1>Title</h1> and world")))
;; The base template ESCAPED the variable
(let ((env (templatel-env-new
:importfn (lambda(e name)
;; Base template define the block
(templatel-env-add-template
e name
(templatel-new "{% block greeting %}Hello {{ name|safe }}{% endblock %}"))))))
(templatel-env-set-autoescape env t)
;; The override that calls super trusts what the base template did
(templatel-env-add-template
env "page.html"
(templatel-new "{% extends \"nav.html\" %}{% block greeting %}{{ super() }} and world{% endblock %}"))
;; the output should be safe
(should (equal (templatel-env-render env "page.html" '(("name" . "<h1>Title</h1>")))
"Hello <h1>Title</h1> and world")))
;; The base template DID NOT escape the variable
(let ((env (templatel-env-new
:importfn (lambda(e name)
;; Base template define the block
(templatel-env-add-template
e name
(templatel-new "{% block greeting %}Hello {{ name }}{% endblock %}"))))))
(templatel-env-set-autoescape env t)
;; The override that calls super trusts what the base template did
(templatel-env-add-template
env "page.html"
(templatel-new "{% extends \"nav.html\" %}{% block greeting %}{{ super()|safe }} and world{% endblock %}"))
;; the output won't have been escaped
(should (equal (templatel-env-render env "page.html" '(("name" . "<h1>Title</h1>")))
"Hello <h1>Title</h1> and world"))))
;; --- Unicode ---
(ert-deftest render-unicode ()
;; "render the same way 🥕 🌽 🌶"
(should (equal (templatel-render-string "0" '()) "0"))
(should (equal (templatel-render-string "0a" '()) "0a"))
(should (equal (templatel-render-string "render the same way 🥕 🌽 🌶" '())
"render the same way 🥕 🌽 🌶")))
;; --- Renderer --
(ert-deftest render-filter-named-parameter-syntax ()
(let* ((env (templatel-env-new))
;; Register the filter within the template environment
(_ (templatel-env-add-filter
env "accepts_named_params"
(lambda(opts)
(string-join (mapcar (lambda(pair) (format "%s=%s" (car pair) (cdr pair))) opts) ","))))
;; Add the template that contains the function call with just
;; named parameters
(_ (templatel-env-add-template
env "page.html"
(templatel-new "{{ accepts_named_params(a=1, b=\"oi\") }}")))
(out (templatel-env-render env "page.html" '())))
(should (equal out "a=1,b=oi")))
(let* ((env (templatel-env-new))
;; Register the filter within the template environment
(_ (templatel-env-add-filter
env "accepts_named_params"
(lambda(v1 opts)
;;(message "V1: %s" v1)
(string-join (cons (format "%d" v1)
(mapcar (lambda(pair) (format "%s=%s" (car pair) (cdr pair))) opts)) ","))))
;; Add the template that contains the function call with just
;; named parameters
(_ (templatel-env-add-template
env "page.html"
(templatel-new "{{ accepts_named_params(v1, a=v2, b=v3) }}")))
(out (templatel-env-render env "page.html" '(("v1" . 10)
("v2" . 42)
("v3" . 55)))))
(should (equal out "10,a=42,b=55"))))
(ert-deftest render-standalone-filter-syntax ()
(condition-case err
(templatel-render-string "{{ stuff() }}" '())
(templatel-error
(should (equal err '(templatel-runtime-error . "Filter `stuff' doesn't exist")))))
(let* ((env (templatel-env-new))
(_ (templatel-env-add-filter env "mysum" (lambda(a b) (+ a b))))
(_ (templatel-env-add-template env "page.html" (templatel-new "{{ mysum(2, 3) }}")))
(out (templatel-env-render env "page.html" '())))
(should (equal out "5")))
(let* ((env (templatel-env-new))
(_ (templatel-env-add-filter env "spam" (lambda(spam) (format "%s%s%s%s" spam spam spam spam))))
(_ (templatel-env-add-template env "page.html" (templatel-new "{{ spam(\"sPaM\") }}")))
(out (templatel-env-render env "page.html" '())))
(should (equal out "sPaMsPaMsPaMsPaM"))))
(ert-deftest render-user-filter ()
(let ((env (templatel-env-new)))
(templatel-env-add-filter env "greetings" (lambda(name p) (format "Hello %s%s%s%s" name p p p)))
(templatel-env-add-template env "page.html" (templatel-new "{{ name|greetings(\"!\") }}"))
(should (equal (templatel-env-render env "page.html" '(("name" . "GNU"))) "Hello GNU!!!"))))
(ert-deftest render-block-extends-sub-sub ()
(let ((env (templatel-env-new
:importfn (lambda(e name)
(templatel-env-add-template
e name
(let ((templates (make-hash-table :test 'equal)))
(puthash "base.html"
(templatel-new "BASE:
{% block block0 %}base0{% endblock %}
{% block block1 %}base1{% endblock %}
{% block block2 %}base2{% endblock %}
{% block block3 %}base3{% endblock %}
base-end")
templates)
(puthash "post.html"
(templatel-new "{% extends \"base.html\" %}
{% block block0 %}post0{% endblock %}won't be rendered
{% block block1 %}post1{% endblock %}")
templates)
(gethash name templates)))))))
(templatel-env-add-template
env "log/post.html"
(templatel-new
"{% extends \"post.html\" %}
{% block block0 %}log0{% endblock %}
{% block block2 %}log2{% endblock %}"))
(should (equal
(templatel-env-render env "log/post.html" '())
"BASE:
log0
post1
log2
base3
base-end"))))
(ert-deftest render-block-extends-sub-sub-super ()
(let ((env (templatel-env-new
:importfn (lambda(e name)
(templatel-env-add-template
e name
(let ((templates (make-hash-table :test 'equal)))
(puthash "base.html"
(templatel-new "BASE:
{% block block0 %}base0{% endblock %}
{% block block1 %}base1{% endblock %}
{% block block2 %}base2{% endblock %}
{% block block3 %}base3{% endblock %}
base-end")
templates)
(puthash "p0.html"
(templatel-new "{% extends \"base.html\" %}
{% block block0 %}p0;{{ super() }}{% endblock %}won't be rendered
{% block block1 %}p0;{{ super() }}{% endblock %}won't be rendered
{% block block2 %}p0{% endblock %}")
templates)
(puthash "p1.html"
(templatel-new "{% extends \"p0.html\" %}
{% block block0 %}p1;{{ super() }}{% endblock %}won't be rendered
{% block block1 %}p1;{{ super() }}{% endblock %}")
templates)
(gethash name templates)))))))
(templatel-env-add-template
env "p2.html"
(templatel-new
"{% extends \"p1.html\" %}
{% block block0 %}p2;{{ super() }}{% endblock %}
{% block block2 %}p2;{{ super() }}{% endblock %}"))
(let ((text (templatel-env-render env "p2.html" '())))
(should (equal
text
"BASE:
p2;p1;p0;base0
p1;p0;base1
p2;p0
base3
base-end")))))
(ert-deftest render-block-extends-override-full-block-with-empty-one ()
(let ((env (templatel-env-new
:importfn (lambda(e name)
;; Base template define the block
(templatel-env-add-template
e name
(templatel-new "-{% block blk %}something{% endblock %}-"))))))
;; Template that extends the layout and override the block
(templatel-env-add-template
env "page.html"
(templatel-new "{% extends \"layout.html\" %}{% block blk %}{% endblock %}"))
(should (equal (templatel-env-render env "page.html" '()) "--"))))
(ert-deftest render-block-extends-override-some-empty-blocks ()
(let ((env (templatel-env-new
:importfn (lambda(e name)
;; Base template define the block
(templatel-env-add-template
e name
(templatel-new "{% block first %}{% endblock %} {% block second %}second-default{% endblock %}"))))))
;; Template that extends the layout and override the block
(templatel-env-add-template
env "page.html"
(templatel-new "{% extends \"layout.html\" %}{% block second %}brand new{% endblock %}"))
(should (equal (templatel-env-render env "page.html" '()) " brand new"))))
(ert-deftest render-block-extends-override-some ()
(let ((env (templatel-env-new
:importfn (lambda(e name)
;; Base template define the block
(templatel-env-add-template
e name
(templatel-new "{% block first %}first-default{% endblock %} {% block second %}second-default{% endblock %}"))))))
;; Template that extends the layout and override the block
(templatel-env-add-template
env "page.html"
(templatel-new "{% extends \"layout.html\" %}{% block second %}brand new{% endblock %}"))
(should (equal (templatel-env-render env "page.html" '()) "first-default brand new"))))
(ert-deftest render-block-extends ()
(let* ((env (templatel-env-new
:importfn (lambda(e name)
;; Base template define the block
(templatel-env-add-template
e name
(templatel-new "Always {% block stuff %}default{% endblock %}"))))))
;; Template that extends the layout and override the block
(templatel-env-add-template
env "page.html"
(templatel-new "{% extends \"layout.html\" %}{% block stuff %}look at the bright side{% endblock %}"))
(should (equal (templatel-env-render env "page.html" '()) "Always look at the bright side"))))
(ert-deftest render-block-extends-super ()
(let ((env (templatel-env-new
:importfn (lambda(e name)
;; Base template define the block
(templatel-env-add-template
e name
(templatel-new "{% block greeting %}Hello{% endblock %}"))))))
;; Template that extends the layout and override the block
(templatel-env-add-template
env "page.html"
(templatel-new "{% extends \"nav.html\" %}{% block greeting %}{{ super() }} world{% endblock %}"))
(should (equal (templatel-env-render env "page.html" '()) "Hello world"))))
(ert-deftest render-block-default ()
(should (equal (templatel-render-string "{% block stuff %}default{% endblock %}" '()) "default")))
(ert-deftest render-include ()
(let ((env (templatel-env-new
:importfn (lambda(e name)
;; Base template define the block
(templatel-env-add-template
e name
(templatel-new "sub text"))))))
;; Template that extends the layout and override the block
(templatel-env-add-template
env "page.html"
(templatel-new "before {% include \"foo.html\" %} after"))
(should (equal "before sub text after"
(templatel-env-render env "page.html" '()))))
;; Test with html entities
(let ((env (templatel-env-new
:importfn (lambda(e name)
;; Base template define the block
(templatel-env-add-template
e name
(templatel-new "<script>alert(1)</script>"))))))
;; Template that extends the layout and override the block
(templatel-env-add-template
env "page.html"
(templatel-new "before {% include \"foo.html\" %} after"))
(should (equal "before <script>alert(1)</script> after"
(templatel-env-render env "page.html" '())))))
(ert-deftest render-nil-value ()
(should (equal (templatel-render-string "{{ myvar }}" '(("myvar" . nil))) ""))
(should (equal (templatel-render-string "{{ nil }}" '()) "")))
(ert-deftest render-expr-logic ()
(should (equal (templatel-render-string "{{ true }}" '()) "t"))
(should (equal (templatel-render-string "{{ false }}" '()) ""))
(should (equal (templatel-render-string "{{ false or true }}" '()) "t"))
(should (equal (templatel-render-string "{{ false and true }}" '()) ""))
(should (equal (templatel-render-string "{{ true and true }}" '()) "t"))
(should (equal (templatel-render-string "{{ true or false }}" '()) "t"))
(should (equal (templatel-render-string "{{ false or true }}" '()) "t"))
(should (equal (templatel-render-string "{{ not not a }}" '(("a" . t))) "t"))
(should (equal (templatel-render-string "{{ a or b }}" '(("a" . nil) ("b" . t))) "t"))
(should (equal (templatel-render-string "{{ a or b }}" '(("a" . t) ("b" . nil))) "t"))
(should (equal (templatel-render-string "{{ a or b }}" '(("a" . nil) ("b" . nil))) ""))
(should (equal (templatel-render-string "{{ not a }}" '(("a" . nil))) "t"))
(should (equal (templatel-render-string "{{ not not a }}" '(("a" . t))) "t"))
(should (equal (templatel-render-string "{{ not a and not b }}"
'(("a" . nil)
("b" . t)))
""))
(should (equal (templatel-render-string "{{ not a and not b }}"
'(("a" . nil)
("b" . nil)))
"t")))
(ert-deftest render-expr-unary ()
(should (equal (templatel-render-string "{{ +a }}" '(("a" . -10))) "10"))
(should (equal (templatel-render-string "{{ +a }}" '(("a" . 10))) "10"))
(should (equal (templatel-render-string "{{ -a }}" '(("a" . -10))) "10"))
(should (equal (templatel-render-string "{{ -a }}" '(("a" . 10))) "-10")))
(ert-deftest render-expr-all-cmp ()
(should (equal (templatel-render-string "{{ a == 10 }}" '(("a" . 10))) "t"))
(should (equal (templatel-render-string "{{ a == 11 }}" '(("a" . 10))) ""))
(should (equal (templatel-render-string "{{ a != 11 }}" '(("a" . 10))) "t"))
(should (equal (templatel-render-string "{{ a != 10 }}" '(("a" . 10))) ""))
(should (equal (templatel-render-string "{{ a >= 10 }}" '(("a" . 10))) "t"))
(should (equal (templatel-render-string "{{ a >= 11 }}" '(("a" . 10))) ""))
(should (equal (templatel-render-string "{{ a <= 11 }}" '(("a" . 10))) "t"))
(should (equal (templatel-render-string "{{ a <= 9 }}" '(("a" . 10))) ""))
(should (equal (templatel-render-string "{{ a < 11 }}" '(("a" . 10))) "t"))
(should (equal (templatel-render-string "{{ a < 10 }}" '(("a" . 10))) ""))
(should (equal (templatel-render-string "{{ a > 9 }}" '(("a" . 10))) "t"))
(should (equal (templatel-render-string "{{ a > 10 }}" '(("a" . 10))) ""))
(should (equal (templatel-render-string "{{ a in b }}" '(("a" . 10)
("b" . (0 5 10))))
"t"))
(should (equal (templatel-render-string "{{ a in b }}" '(("a" . 10)
("b" . (0 5 15))))
"")))
(ert-deftest render-if-elif-expr-cmp ()
(should (equal (templatel-render-string
"{% if a > 10 %}Big{% elif a > 5 %}Med{% else %}Small{% endif %}"
'(("a" . 11)))
"Big"))
(should (equal (templatel-render-string
"{% if a > 10 %}Big{% elif a > 5 %}Med{% else %}Small{% endif %}"
'(("a" . 7)))
"Med"))
(should (equal (templatel-render-string
"{% if a > 10 %}Big{% elif a > 5 %}Med{% else %}Small{% endif %}"
'(("a" . 4)))
"Small")))
(ert-deftest render-if-else-expr-cmp ()
(should (equal (templatel-render-string
"{% if a > 3 %}{{ (2 + 3) * a }}{% else %}ecase{% endif %}"
'(("a" . 2)))
"ecase")))
(ert-deftest render-if-expr-cmp ()
(should (equal (templatel-render-string
"{% if a > 3 %}{{ (2 + 3) * a }}{% endif %}"
'(("a" . 2)))
""))
(should (equal (templatel-render-string
"{% if a > 3 %}{{ (2 + 3) * a }}{% endif %}"
'(("a" . 10)))
"50")))
(ert-deftest render-expr-math-paren ()
(should (equal (templatel-render-string
"{{ (2 + 3) * 4 }}"
'())
"20")))
(ert-deftest render-expr-math-mix ()
(should (equal (templatel-render-string
"{{ 2 + 3 * 4 }}"
'())
"14")))
(ert-deftest render-expr-math-div ()
(should (equal (templatel-render-string
"{{ 150 / 3 }}"
'())
"50")))
(ert-deftest render-expr-math-mul ()
(should (equal (templatel-render-string
"{{ 2 * 3 * 4 }}"
'())
"24")))
(ert-deftest render-expr-math-sub ()
(should (equal (templatel-render-string
"{{ 150 - 3 }}"
'())
"147")))
(ert-deftest render-expr-math-sub ()
(should (equal (templatel-render-string
"{{ 150 + 3 }}"
'())
"153")))
;; --- Filters ---
(ert-deftest render-expr-filter-filter-abs ()
(should (equal "10" (templatel-render-string "{{ -10 | abs }}" '())))
(should (equal "10" (templatel-render-string "{{ 10 | abs }}" '()))))
(ert-deftest render-expr-filter-attr ()
(should (equal "Hi Jaci, you are a Emacs user!"
(templatel-render-string
"Hi {{ user | attr(\"name\") }}, you are a {{ user | attr(\"editor\") }} user!"
'(("user" . (("name" . "Jaci")
("editor" . "Emacs"))))))))
(ert-deftest render-expr-filter-capitalize ()
(should (equal "Emacs"
(templatel-render-string
"{{ \"emacs\" | capitalize }}"
'())))
(should (equal "Emacs lisp"
(templatel-render-string
"{{ \"emacs lisp\" | capitalize }}"
'()))))
(ert-deftest render-expr-filter-default ()
(should (equal "Hi valuable human!"
(templatel-render-string
"Hi {{ user | default(\"valuable human\") }}!"
'(("user" . nil))))))
(ert-deftest render-expr-filter-escape ()
;; Notice auto-escaping is off
(should (equal "Hi <Something>!"
(templatel-render-string
"Hi {{ content | escape }}!"
'(("content" . "<Something>")))))
;; Ensure alias exists
(should (equal "Hi <Something>!"
(templatel-render-string
"Hi {{ content | e }}!"
'(("content" . "<Something>"))))))
(ert-deftest render-expr-filter-first ()
(should (equal "Hi Jaci!"
(templatel-render-string
"Hi {{ users | first }}!"
'(("users" . ("Jaci" "Moon" "Lua")))))))
(ert-deftest render-expr-filter-first-attr ()
(should (equal "Hi Jaci!"
(templatel-render-string
"Hi {{ users | first | attr(\"name\") }}!"
'(("users" . ((("name" . "Jaci"))
(("name" . "Moon"))
(("name" . "Lua")))))))))
(ert-deftest render-expr-filter-float ()
;; here we see the pipe (|) takes higher precedence over the plus
;; sign (+), convert the string content to float and then sum them.
(should (equal "1.5"
(templatel-render-string
"{{ 1 + content | float }}"
'(("content" . "0.5")))))
(should (equal "3.0"
(templatel-render-string
"{{ 1 + content | float }}"
'(("content" . 2)))))
;; there will be type errors
(condition-case err
(templatel-render-string
"{{ 1 + content | float }}"
'(("content" . '(1 2))))
(templatel-error
(should (equal err
'(templatel-runtime-error . "Can't convert type cons to float"))))))
(ert-deftest render-expr-filter-int ()
(should (equal "5"
(templatel-render-string
"{{ content | int }}"
'(("content" . "5.5")))))
(should (equal "3"
(templatel-render-string
"{{ 1 + content | int }}"
'(("content" . 2)))))
(should (equal "You won 255 in bars of gold"
(templatel-render-string
"You won {{ user.byte|int(16) }} in bars of gold"
'(("user" . (("byte" . "0xFF")))))))
(should (equal "You won 42 in bars of gold"
(templatel-render-string
"You won {{ user.bin|int(2) }} in bars of gold"
'(("user" . (("bin" . "0b101010")))))))
(condition-case err
(templatel-render-string
"{{ content | int }}"
'(("content" . '(1 2))))
(templatel-error
(should (equal err
'(templatel-runtime-error . "Can't convert type cons to int"))))))
(ert-deftest render-expr-filter-join ()
(should (equal "1234"
(templatel-render-string
"{{ numbers | join }}"
'(("numbers" . (1 2 3 4))))))
(should (equal "1, 2, 3, 4"
(templatel-render-string
"{{ numbers | join(\", \") }}"
'(("numbers" . (1 2 3 4)))))))
(ert-deftest render-expr-filter-last ()
(should (equal "Hi Lua!"
(templatel-render-string
"Hi {{ users | last }}!"
'(("users" . ("Jaci" "Moon" "Lua")))))))
(ert-deftest render-expr-filter-length ()
(should (equal "3"
(templatel-render-string
"{{ users | length }}"
'(("users" . ("Jaci" "Moon" "Lua")))))))
(ert-deftest render-expr-filter-lower ()
(should (equal "happy hacking"
(templatel-render-string
"{{ phrase | lower }}"
'(("phrase" . "HApPY HaCKiNg"))))))
(ert-deftest render-expr-filter-max ()
(should (equal "10"
(templatel-render-string
"{{ numbers | max }}"
'(("numbers" . (5 8 10 9 7 4 3)))))))
(ert-deftest render-expr-filter-min ()
(should (equal "3"
(templatel-render-string
"{{ numbers | min }}"
'(("numbers" . (5 8 10 9 7 4 3)))))))
(ert-deftest render-expr-filter-round ()
(should (equal "1"
(templatel-render-string
"{{ 1.49999 | round }}"
'())))
(should (equal "2"
(templatel-render-string
"{{ 1.5 | round }}"
'())))
(should (equal "2"
(templatel-render-string
"{{ 1.50001 | round }}"
'()))))
(ert-deftest render-expr-filter-take ()
(should (equal "(1 2 3 4)"
(templatel-render-string
"{{ things | take(4) }}"
'(("things" . (1 2 3 4 5 6 7 8))))))
(should (equal "1, 2, 3, 4, "
(templatel-render-string
"{% for i in things | take(4) %}{{ i }}, {% endfor %}"
'(("things" . (1 2 3 4 5 6 7 8)))))))
(ert-deftest render-expr-filter-title ()
(should (equal "What If The World Was A Cone"
(templatel-render-string
"{{ phrase | title }}"
'(("phrase" . "what if the world was a cone"))))))
(ert-deftest render-expr-filter-apply ()
(should (equal (templatel-render-string
"Awww {{ qts|sum|plus1 }}."
'(("qts" . (1 2 3 4 5))))
"Awww 16.")))
(ert-deftest render-expr-filter-upper ()
(should (equal (templatel-render-string
"Awww {{ user.name|upper }}."
'(("user" . (("name" . "Gnu")))))
"Awww GNU.")))
;; --- Tests ---
(ert-deftest render-expr-test-defined ()
(let ((vars '(("user" . (("name" . "Gnu"))))))
(should (equal "" (templatel-render-string "{{ user is defined }}" '())))
(should (equal "t" (templatel-render-string "{{ user is defined }}" vars)))
(should (equal "t" (templatel-render-string "{{ user.name is defined }}" vars)))
(should (equal "" (templatel-render-string "{{ user.online is defined }}" vars)))))
(ert-deftest render-expr-test-divisible ()
(should (equal "" (templatel-render-string "{{ 10 is divisible(3) }}" '())))
(should (equal "t" (templatel-render-string "{{ 9 is divisible(3) }}" '()))))
;; --- Attribute syntax ---
(ert-deftest render-expr-attribute ()
(should (equal "Hi Gnu, happy Hacking"
(templatel-render-string
"Hi {{ user.name }}, happy {{ user.greeting }}"
'(("user" . (("name" . "Gnu")
("greeting" . "Hacking")))))))
;; yields undefined when accessing unknown field
(should (equal "Hi undefined!"
(templatel-render-string
"Hi {{ user.name }}!"
'(("user" . (("city" . "Belo Horizonte")))))))
;; with filters
(should (equal "GNU"
(templatel-render-string
"{{ user.name | upper }}"
'(("user" . (("name" . "Gnu")))))))
;; with tests
(should (equal "t"
(templatel-render-string
"{{ user.age is divisible(3) }}"
'(("user" . (("name" . "Gnu")
("age" . 33)))))))
;; is falsy when an attribute doesn't exist
(should (equal ""
(templatel-render-string
"{% if user.city %}{{ user.city }}{% endif %}"
'(("user" . (("name" . "Gnu")
("greeting" . "Hacking"))))))))
;; --- Expression ---
(ert-deftest render-expr-string ()
(should (equal (templatel-render-string "{{ \"something\" }}" '()) "something")))
(ert-deftest render-expr-number-bin ()
(should (equal (templatel-render-string "{{ 0b1010 }}" '()) "10")))
(ert-deftest render-expr-number-hex ()
(should (equal (templatel-render-string "{{ 0xFF }}" '()) "255")))
(ert-deftest render-expr-number ()
(should (equal (templatel-render-string "{{ 1280 }}" '()) "1280")))
(ert-deftest render-template-no-sp-stm ()
(should (equal
(templatel-render-string
"{%for name in names%}{{name}} {%endfor%}"
'(("names" . ("One" "Two" "Three"))))
"One Two Three "))
(should
(equal
(templatel-render-string
"{%if false%}aaa{{ b }}aaa{%elif true%}b{%else%}c{%endif%}"
'())
"b")))
(ert-deftest render-template-for-loop ()
(should (equal
"One Two Three "
(templatel-render-string
"{% for name in names %}{{ name }} {% endfor %}"
'(("names" . ("One" "Two" "Three")))))))
(ert-deftest render-template-for-loop-with-filter ()
(should (equal
"1 2 3 4 5 6 7 8 9 "
(templatel-render-string
"{% for i in a|sort %}{{ i }} {% endfor %}"
'(("a" . (3 6 1 4 9 5 8 2 7)))))))
(ert-deftest render-if-with-filter ()
(should
(equal
"test"
(templatel-render-string "{% if list | first %}test{% endif %}" '(("list" . (1))))))
(should
(equal
"test"
(templatel-render-string "{% if 1.6 | round > 1.4 %}test{% endif %}" '()))))
(ert-deftest render-if-else-elif-no-else ()
(should
(equal
(templatel-render-string
"before{% if post.image %}postimg{% elif blog.image %}blogimg{% endif %}after"
'(("post" . ())
("blog" . ())))
"beforeafter"))
(should
(equal
(templatel-render-string
"{% block x %}before{% if post.image %}postimg{% elif blog.image %}blogimg{% endif %}after{% endblock %}"
'(("post" . ())
("blog" . ())))
"beforeafter")))
(ert-deftest render-if-else-elif-two-stmt ()
(should
(equal
(templatel-render-string
"{% if false %}aaa{{ b }}aaa{% elif true %}b{% else %}c{% endif %}"
'())
"b"))
(should
(equal
(templatel-render-string
"{% if false %}aaa{{ b }}aaa{% elif false %}bbbb{{ b }}bbb{% else %}c{% endif %}"
'())
"c")))
(ert-deftest render-if-else-two-stmt ()
(should
(equal
(templatel-render-string
"{% if true %}stuff{% else %}before{{ a }}after{% endif %}"
'())
"stuff"))
(should
(equal
(templatel-render-string
"{% if false %}before{{ a }}after{% else %}stuff{% endif %}"
'())
"stuff")))
(ert-deftest render-if-two-stmt ()
(should
(equal
(templatel-render-string
"aqui ali {% if a.b %}before{{ a.b }}after{% endif %} e acola"
'(("a" . (("a" . 1)
("c" . 3)))))
"aqui ali e acola")))
(ert-deftest render-template-elif0 ()
(should
(equal
(templatel-render-string
"<h1>Hello
{% if one %}
{{ name1 }}
{% elif two %}
{{ name2 }}
{% elif three %}
Three
{% else %}
Four
{% endif %}
</h1>
"
'(("name1" . "Emacs")
("name2" . "Gnu")
("one" . nil)
("two" . t)))
"<h1>Hello\n\n Gnu\n\n</h1>\n")))
(ert-deftest render-template-if-else-n ()
(should
(equal
(templatel-render-string
"<h1>Hello {% if enabled %}{{ name }}{% else %}Non-MX{% endif %}</h1>"
'(("name" . "Emacs")
("enabled" . nil)))
"<h1>Hello Non-MX</h1>")))
(ert-deftest render-template-if-else-t ()
(should
(equal
(templatel-render-string
"<h1>Hello {% if enabled %}{{ name }}{% else %}Non-Emacs{% endif %}</h1>"
'(("name" . "Emacs")
("enabled" . t)))
"<h1>Hello Emacs</h1>")))
(ert-deftest render-template-if-true ()
(should
(equal
(templatel-render-string
"<h1>Hello {% if enabled %}{{ name }}{% endif %}</h1>"
'(("name" . "Emacs")
("enabled" . t)))
"<h1>Hello Emacs</h1>")))
(ert-deftest render-template-if-false ()
(should
(equal
(templatel-render-string
"<h1>Hello {% if enabled %}{{ name }}{% endif %}</h1>"
'(("name" . "Emacs")
("enabled" . nil)))
"<h1>Hello </h1>")))
(ert-deftest render-template-variable ()
(should (equal
"<h1>Hello undefined</h1>"
(templatel-render-string "<h1>Hello {{ name }}</h1>" '())))
(should (equal
(templatel-render-string "<h1>Hello {{name }}</h1>" '(("name" . "Emacs")))
"<h1>Hello Emacs</h1>"))
(should (equal
(templatel-render-string "<h1>Hello {{ name}}</h1>" '(("name" . "Emacs")))
"<h1>Hello Emacs</h1>"))
(should (equal
(templatel-render-string "<h1>Hello {{name}}</h1>" '(("name" . "Emacs")))
"<h1>Hello Emacs</h1>"))
(should (equal
(templatel-render-string "<h1>Hello {{ name }}</h1>" '(("name" . "Emacs")))
"<h1>Hello Emacs</h1>")))
(ert-deftest render-template ()
(should (equal
(templatel-render-string "<h1>Hello Emacs</h1>" nil)
"<h1>Hello Emacs</h1>")))