test/test-renderer.cpp - third_party/inja - Git at Google

 // Copyright (c) 2020 Pantor. All rights reserved.

 TEST_CASE("types") {
   inja::Environment env;
   json data;
   data["name"] = "Peter";
   data["city"] = "Brunswick";
   data["age"] = 29;
   data["names"] = {"Jeff", "Seb"};
   data["brother"]["name"] = "Chris";
   data["brother"]["daughters"] = {"Maria", "Helen"};
   data["brother"]["daughter0"] = {{"name", "Maria"}};
   data["is_happy"] = true;
   data["is_sad"] = false;
   data["@name"] = "@name";
   data["$name"] = "$name";
   data["relatives"]["mother"] = "Maria";
   data["relatives"]["brother"] = "Chris";
   data["relatives"]["sister"] = "Jenny";
   data["vars"] = {2, 3, 4, 0, -1, -2, -3};

   SUBCASE("basic") {
     CHECK(env.render("", data) == "");
     CHECK(env.render("Hello World!", data) == "Hello World!");
     CHECK_THROWS_WITH(env.render("{{ }}", data), "[inja.exception.render_error] (at 1:4) empty expression");
     CHECK_THROWS_WITH(env.render("{{", data), "[inja.exception.parser_error] (at 1:3) expected expression close, got '<eof>'");
   }

   SUBCASE("variables") {
     CHECK(env.render("Hello {{ name }}!", data) == "Hello Peter!");
     CHECK(env.render("{{ name }}", data) == "Peter");
     CHECK(env.render("{{name}}", data) == "Peter");
     CHECK(env.render("{{ name }} is {{ age }} years old.", data) == "Peter is 29 years old.");
     CHECK(env.render("Hello {{ name }}! I come from {{ city }}.", data) == "Hello Peter! I come from Brunswick.");
     CHECK(env.render("Hello {{ names.1 }}!", data) == "Hello Seb!");
     CHECK(env.render("Hello {{ brother.name }}!", data) == "Hello Chris!");
     CHECK(env.render("Hello {{ brother.daughter0.name }}!", data) == "Hello Maria!");
     CHECK(env.render("{{ \"{{ no_value }}\" }}", data) == "{{ no_value }}");
     CHECK(env.render("{{ @name }}", data) == "@name");
     CHECK(env.render("{{ $name }}", data) == "$name");

     CHECK_THROWS_WITH(env.render("{{unknown}}", data), "[inja.exception.render_error] (at 1:3) variable 'unknown' not found");
   }

   SUBCASE("comments") {
     CHECK(env.render("Hello{# This is a comment #}!", data) == "Hello!");
     CHECK(env.render("{# --- #Todo --- #}", data) == "");
   }

   SUBCASE("loops") {
     CHECK(env.render("{% for name in names %}a{% endfor %}", data) == "aa");
     CHECK(env.render("Hello {% for name in names %}{{ name }} {% endfor %}!", data) == "Hello Jeff Seb !");
     CHECK(env.render("Hello {% for name in names %}{{ loop.index }}: {{ name }}, {% endfor %}!", data) ==
           "Hello 0: Jeff, 1: Seb, !");
     CHECK(env.render("{% for type, name in relatives %}{{ loop.index1 }}: {{ type }}: {{ name }}{% if loop.is_last == "
                      "false %}, {% endif %}{% endfor %}",
                      data) == "1: brother: Chris, 2: mother: Maria, 3: sister: Jenny");
     CHECK(env.render("{% for v in vars %}{% if v > 0 %}+{% endif %}{% endfor %}", data) == "+++");
     CHECK(env.render(
               "{% for name in names %}{{ loop.index }}: {{ name }}{% if not loop.is_last %}, {% endif %}{% endfor %}!",
               data) == "0: Jeff, 1: Seb!");
     CHECK(env.render("{% for name in names %}{{ loop.index }}: {{ name }}{% if loop.is_last == false %}, {% endif %}{% "
                      "endfor %}!",
                      data) == "0: Jeff, 1: Seb!");

     CHECK(env.render("{% for name in [] %}a{% endfor %}", data) == "");

     CHECK_THROWS_WITH(env.render("{% for name ins names %}a{% endfor %}", data),
                       "[inja.exception.parser_error] (at 1:13) expected 'in', got 'ins'");
     CHECK_THROWS_WITH(env.render("{% for name in empty_loop %}a{% endfor %}", data),
                       "[inja.exception.render_error] (at 1:16) variable 'empty_loop' not found");
     // CHECK_THROWS_WITH( env.render("{% for name in relatives %}{{ name }}{% endfor %}", data),
     // "[inja.exception.json_error] [json.exception.type_error.302] type must be array, but is object" );
   }

   SUBCASE("nested loops") {
     auto ldata = json::parse(R""""(
 { "outer" : [
     { "inner" : [
         { "in2" : [ 1, 2 ] },
         { "in2" : []},
         { "in2" : []}
         ]
     },
     { "inner" : [] },
     { "inner" : [
         { "in2" : [ 3, 4 ] },
         { "in2" : [ 5, 6 ] }
         ]
     }
     ]
 }
 )"""");

     CHECK(env.render(R""""(
 {% for o in outer %}{% for i in o.inner %}{{loop.parent.index}}:{{loop.index}}::{{loop.parent.is_last}}
 {% for ii in i.in2%}{{ii}},{%endfor%}
 {%endfor%}{%endfor%}
 )"""",
                      ldata) == "\n0:0::false\n1,2,\n0:1::false\n\n0:2::false\n\n2:0::true\n3,4,\n2:1::true\n5,6,\n\n");
   }

   SUBCASE("conditionals") {
     CHECK(env.render("{% if is_happy %}{% endif %}", data) == "");
     CHECK(env.render("{% if is_happy %}Yeah!{% endif %}", data) == "Yeah!");
     CHECK(env.render("{% if is_sad %}Yeah!{% endif %}", data) == "");
     CHECK(env.render("{% if is_sad %}Yeah!{% else %}Nooo...{% endif %}", data) == "Nooo...");
     CHECK(env.render("{% if age == 29 %}Right{% else %}Wrong{% endif %}", data) == "Right");
     CHECK(env.render("{% if age > 29 %}Right{% else %}Wrong{% endif %}", data) == "Wrong");
     CHECK(env.render("{% if age <= 29 %}Right{% else %}Wrong{% endif %}", data) == "Right");
     CHECK(env.render("{% if age != 28 %}Right{% else %}Wrong{% endif %}", data) == "Right");
     CHECK(env.render("{% if age >= 30 %}Right{% else %}Wrong{% endif %}", data) == "Wrong");
     CHECK(env.render("{% if age in [28, 29, 30] %}True{% endif %}", data) == "True");
     CHECK(env.render("{% if age == 28 %}28{% else if age == 29 %}29{% endif %}", data) == "29");
     CHECK(env.render("{% if age == 26 %}26{% else if age == 27 %}27{% else if age == 28 %}28{% else %}29{% endif %}",
                      data) == "29");
     CHECK(env.render("{% if age == 25 %}+{% endif %}{% if age == 29 %}+{% else %}-{% endif %}", data) == "+");

     CHECK_THROWS_WITH(env.render("{% if is_happy %}{% if is_happy %}{% endif %}", data),
                       "[inja.exception.parser_error] (at 1:46) unmatched if");
     CHECK_THROWS_WITH(env.render("{% if is_happy %}{% else if is_happy %}{% end if %}", data),
                       "[inja.exception.parser_error] (at 1:43) expected statement, got 'end'");
   }

   SUBCASE("set statements") {
     CHECK(env.render("{% set predefined=true %}{% if predefined %}a{% endif %}", data) == "a");
     CHECK(env.render("{% set predefined=false %}{% if predefined %}a{% endif %}", data) == "");
     CHECK(env.render("{% set age=30 %}{{age}}", data) == "30");
     CHECK(env.render("{% set predefined.value=1 %}{% if existsIn(predefined, \"value\") %}{{predefined.value}}{% endif %}", data) == "1");
     CHECK(env.render("{% set brother.name=\"Bob\" %}{{brother.name}}", data) == "Bob");
     CHECK_THROWS_WITH(env.render("{% if predefined %}{% endif %}", data),
                       "[inja.exception.render_error] (at 1:7) variable 'predefined' not found");
     CHECK(env.render("{{age}}", data) == "29");
     CHECK(env.render("{{brother.name}}", data) == "Chris");
   }

   SUBCASE("short circuit evaluation") {
     CHECK(env.render("{% if 0 and undefined %}do{% else %}nothing{% endif %}", data) == "nothing");
     CHECK_THROWS_WITH(env.render("{% if 1 and undefined %}do{% else %}nothing{% endif %}", data),
                       "[inja.exception.render_error] (at 1:13) variable 'undefined' not found");
   }

   SUBCASE("line statements") {
     CHECK(env.render(R""""(## if is_happy
 Yeah!
 ## endif)"""",
                      data) == R""""(Yeah!
 )"""");

     CHECK(env.render(R""""(## if is_happy
 ## if is_happy
 Yeah!
 ## endif
 ## endif    )"""",
                      data) == R""""(Yeah!
 )"""");
   }
 }

 TEST_CASE("templates") {
   json data;
   data["name"] = "Peter";
   data["city"] = "Brunswick";
   data["is_happy"] = true;

   SUBCASE("reuse") {
     inja::Environment env;
     inja::Template temp = env.parse("{% if is_happy %}{{ name }}{% else %}{{ city }}{% endif %}");

     CHECK(env.render(temp, data) == "Peter");

     data["is_happy"] = false;

     CHECK(env.render(temp, data) == "Brunswick");
   }

   SUBCASE("include") {
     inja::Environment env;
     inja::Template t1 = env.parse("Hello {{ name }}");
     env.include_template("greeting", t1);

     inja::Template t2 = env.parse("{% include \"greeting\" %}!");
     CHECK(env.render(t2, data) == "Hello Peter!");
     CHECK_THROWS_WITH(env.parse("{% include \"does-not-exist\" %}!"),
                       "[inja.exception.file_error] failed accessing file at 'does-not-exist'");
   }

   SUBCASE("include-in-loop") {
     json loop_data;
     loop_data["cities"] = json::array({{{"name", "Munich"}}, {{"name", "New York"}}});

     inja::Environment env;
     env.include_template("city.tpl", env.parse("{{ loop.index }}:{{ city.name }};"));

     CHECK(env.render("{% for city in cities %}{% include \"city.tpl\" %}{% endfor %}", loop_data) ==
           "0:Munich;1:New York;");
   }

   SUBCASE("count variables") {
     inja::Environment env;
     inja::Template t1 = env.parse("Hello {{ name }}");
     inja::Template t2 = env.parse("{% if is_happy %}{{ name }}{% else %}{{ city }}{% endif %}");
     inja::Template t3 = env.parse("{% if at(name, test) %}{{ name }}{% else %}{{ city }}{{ upper(city) }}{% endif %}");

     CHECK(t1.count_variables() == 1);
     CHECK(t2.count_variables() == 3);
     CHECK(t3.count_variables() == 5);
   }

   SUBCASE("whitespace control") {
     inja::Environment env;
     CHECK(env.render("{% if is_happy %}{{ name }}{% endif %}", data) == "Peter");
     CHECK(env.render("   {% if is_happy %}{{ name }}{% endif %}   ", data) == "   Peter   ");
     CHECK(env.render("   {% if is_happy %}{{ name }}{% endif %}\n ", data) == "   Peter\n ");
     CHECK(env.render("Test\n   {%- if is_happy %}{{ name }}{% endif %}   ", data) == "Test\nPeter   ");
     CHECK(env.render("   {%+ if is_happy %}{{ name }}{% endif %}", data) == "   Peter");
     CHECK(env.render("   {%- if is_happy %}{{ name }}{% endif -%}   \n   ", data) == "Peter");

     CHECK(env.render("   {{- name -}}   \n   ", data) == "Peter");
     CHECK(env.render("Test\n   {{- name }}   ", data) == "Test\nPeter   ");
     CHECK(env.render("   {{ name }}\n ", data) == "   Peter\n ");
     CHECK(env.render("{{ name }}{# name -#}    !", data) == "Peter!");
     CHECK(env.render("   {#- name -#}    !", data) == "!");

     // Nothing will be stripped if there are other characters before the start of the block.
     CHECK(env.render(".  {%- if is_happy %}{{ name }}{% endif -%}\n", data) == ".  Peter");
     CHECK(env.render(".  {#- comment -#}\n.", data) == ".  .");

     env.set_lstrip_blocks(true);
     CHECK(env.render("Hello {{ name }}!", data) == "Hello Peter!");
     CHECK(env.render("   {% if is_happy %}{{ name }}{% endif %}", data) == "Peter");
     CHECK(env.render("   {% if is_happy %}{{ name }}{% endif %}   ", data) == "Peter   ");
     CHECK(env.render("   {% if is_happy %}{{ name }}{% endif -%}   ", data) == "Peter");
     CHECK(env.render("   {%+ if is_happy %}{{ name }}{% endif %}", data) == "   Peter");
     CHECK(env.render("\n   {%+ if is_happy %}{{ name }}{% endif -%}   ", data) == "\n   Peter");
     CHECK(env.render("{% if is_happy %}{{ name }}{% endif %}\n", data) == "Peter\n");
     CHECK(env.render("   {# comment #}", data) == "");

     env.set_trim_blocks(true);
     CHECK(env.render("{% if is_happy %}{{ name }}{% endif %}", data) == "Peter");
     CHECK(env.render("{% if is_happy %}{{ name }}{% endif %}\n", data) == "Peter");
     CHECK(env.render("{% if is_happy %}{{ name }}{% endif %}   \n.", data) == "Peter.");
     CHECK(env.render("{%- if is_happy %}{{ name }}{% endif -%}   \n.", data) == "Peter.");
     CHECK(env.render("   {# comment #}   \n.", data) == ".");
   }
 }

 TEST_CASE("other syntax") {
   json data;
   data["name"] = "Peter";
   data["city"] = "Brunswick";
   data["age"] = 29;
   data["names"] = {"Jeff", "Seb"};
   data["brother"]["name"] = "Chris";
   data["brother"]["daughters"] = {"Maria", "Helen"};
   data["brother"]["daughter0"] = {{"name", "Maria"}};
   data["is_happy"] = true;

   SUBCASE("other expression syntax") {
     inja::Environment env;

     CHECK(env.render("Hello {{ name }}!", data) == "Hello Peter!");

     env.set_expression("(&", "&)");

     CHECK(env.render("Hello {{ name }}!", data) == "Hello {{ name }}!");
     CHECK(env.render("Hello (& name &)!", data) == "Hello Peter!");
   }

   SUBCASE("other comment syntax") {
     inja::Environment env;
     env.set_comment("(&", "&)");

     CHECK(env.render("Hello {# Test #}", data) == "Hello {# Test #}");
     CHECK(env.render("Hello (& Test &)", data) == "Hello ");
   }

   SUBCASE("multiple changes") {
     inja::Environment env;
     env.set_line_statement("$$");
     env.set_expression("<%", "%>");

     std::string string_template = R""""(Hello <%name%>
 $$ if name == "Peter"
     You really are <%name%>
 $$ endif
 )"""";

     CHECK(env.render(string_template, data) == "Hello Peter\n    You really are Peter\n");
   }
 }
	// Copyright (c) 2020 Pantor. All rights reserved.

	TEST_CASE("types") {
	inja::Environment env;
	json data;
	data["name"] = "Peter";
	data["city"] = "Brunswick";
	data["age"] = 29;
	data["names"] = {"Jeff", "Seb"};
	data["brother"]["name"] = "Chris";
	data["brother"]["daughters"] = {"Maria", "Helen"};
	data["brother"]["daughter0"] = {{"name", "Maria"}};
	data["is_happy"] = true;
	data["is_sad"] = false;
	data["@name"] = "@name";
	data["$name"] = "$name";
	data["relatives"]["mother"] = "Maria";
	data["relatives"]["brother"] = "Chris";
	data["relatives"]["sister"] = "Jenny";
	data["vars"] = {2, 3, 4, 0, -1, -2, -3};

	SUBCASE("basic") {
	CHECK(env.render("", data) == "");
	CHECK(env.render("Hello World!", data) == "Hello World!");
	CHECK_THROWS_WITH(env.render("{{ }}", data), "[inja.exception.render_error] (at 1:4) empty expression");
	CHECK_THROWS_WITH(env.render("{{", data), "[inja.exception.parser_error] (at 1:3) expected expression close, got '<eof>'");
	}

	SUBCASE("variables") {
	CHECK(env.render("Hello {{ name }}!", data) == "Hello Peter!");
	CHECK(env.render("{{ name }}", data) == "Peter");
	CHECK(env.render("{{name}}", data) == "Peter");
	CHECK(env.render("{{ name }} is {{ age }} years old.", data) == "Peter is 29 years old.");
	CHECK(env.render("Hello {{ name }}! I come from {{ city }}.", data) == "Hello Peter! I come from Brunswick.");
	CHECK(env.render("Hello {{ names.1 }}!", data) == "Hello Seb!");
	CHECK(env.render("Hello {{ brother.name }}!", data) == "Hello Chris!");
	CHECK(env.render("Hello {{ brother.daughter0.name }}!", data) == "Hello Maria!");
	CHECK(env.render("{{ \"{{ no_value }}\" }}", data) == "{{ no_value }}");
	CHECK(env.render("{{ @name }}", data) == "@name");
	CHECK(env.render("{{ $name }}", data) == "$name");

	CHECK_THROWS_WITH(env.render("{{unknown}}", data), "[inja.exception.render_error] (at 1:3) variable 'unknown' not found");
	}

	SUBCASE("comments") {
	CHECK(env.render("Hello{# This is a comment #}!", data) == "Hello!");
	CHECK(env.render("{# --- #Todo --- #}", data) == "");
	}

	SUBCASE("loops") {
	CHECK(env.render("{% for name in names %}a{% endfor %}", data) == "aa");
	CHECK(env.render("Hello {% for name in names %}{{ name }} {% endfor %}!", data) == "Hello Jeff Seb !");
	CHECK(env.render("Hello {% for name in names %}{{ loop.index }}: {{ name }}, {% endfor %}!", data) ==
	"Hello 0: Jeff, 1: Seb, !");
	CHECK(env.render("{% for type, name in relatives %}{{ loop.index1 }}: {{ type }}: {{ name }}{% if loop.is_last == "
	"false %}, {% endif %}{% endfor %}",
	data) == "1: brother: Chris, 2: mother: Maria, 3: sister: Jenny");
	CHECK(env.render("{% for v in vars %}{% if v > 0 %}+{% endif %}{% endfor %}", data) == "+++");
	CHECK(env.render(
	"{% for name in names %}{{ loop.index }}: {{ name }}{% if not loop.is_last %}, {% endif %}{% endfor %}!",
	data) == "0: Jeff, 1: Seb!");
	CHECK(env.render("{% for name in names %}{{ loop.index }}: {{ name }}{% if loop.is_last == false %}, {% endif %}{% "
	"endfor %}!",
	data) == "0: Jeff, 1: Seb!");

	CHECK(env.render("{% for name in [] %}a{% endfor %}", data) == "");

	CHECK_THROWS_WITH(env.render("{% for name ins names %}a{% endfor %}", data),
	"[inja.exception.parser_error] (at 1:13) expected 'in', got 'ins'");
	CHECK_THROWS_WITH(env.render("{% for name in empty_loop %}a{% endfor %}", data),
	"[inja.exception.render_error] (at 1:16) variable 'empty_loop' not found");
	// CHECK_THROWS_WITH( env.render("{% for name in relatives %}{{ name }}{% endfor %}", data),
	// "[inja.exception.json_error] [json.exception.type_error.302] type must be array, but is object" );
	}

	SUBCASE("nested loops") {
	auto ldata = json::parse(R""""(
	{ "outer" : [
	{ "inner" : [
	{ "in2" : [ 1, 2 ] },
	{ "in2" : []},
	{ "in2" : []}
	]
	},
	{ "inner" : [] },
	{ "inner" : [
	{ "in2" : [ 3, 4 ] },
	{ "in2" : [ 5, 6 ] }
	]
	}
	]
	}
	)"""");

	CHECK(env.render(R""""(
	{% for o in outer %}{% for i in o.inner %}{{loop.parent.index}}:{{loop.index}}::{{loop.parent.is_last}}
	{% for ii in i.in2%}{{ii}},{%endfor%}
	{%endfor%}{%endfor%}
	)"""",
	ldata) == "\n0:0::false\n1,2,\n0:1::false\n\n0:2::false\n\n2:0::true\n3,4,\n2:1::true\n5,6,\n\n");
	}

	SUBCASE("conditionals") {
	CHECK(env.render("{% if is_happy %}{% endif %}", data) == "");
	CHECK(env.render("{% if is_happy %}Yeah!{% endif %}", data) == "Yeah!");
	CHECK(env.render("{% if is_sad %}Yeah!{% endif %}", data) == "");
	CHECK(env.render("{% if is_sad %}Yeah!{% else %}Nooo...{% endif %}", data) == "Nooo...");
	CHECK(env.render("{% if age == 29 %}Right{% else %}Wrong{% endif %}", data) == "Right");
	CHECK(env.render("{% if age > 29 %}Right{% else %}Wrong{% endif %}", data) == "Wrong");
	CHECK(env.render("{% if age <= 29 %}Right{% else %}Wrong{% endif %}", data) == "Right");
	CHECK(env.render("{% if age != 28 %}Right{% else %}Wrong{% endif %}", data) == "Right");
	CHECK(env.render("{% if age >= 30 %}Right{% else %}Wrong{% endif %}", data) == "Wrong");
	CHECK(env.render("{% if age in [28, 29, 30] %}True{% endif %}", data) == "True");
	CHECK(env.render("{% if age == 28 %}28{% else if age == 29 %}29{% endif %}", data) == "29");
	CHECK(env.render("{% if age == 26 %}26{% else if age == 27 %}27{% else if age == 28 %}28{% else %}29{% endif %}",
	data) == "29");
	CHECK(env.render("{% if age == 25 %}+{% endif %}{% if age == 29 %}+{% else %}-{% endif %}", data) == "+");

	CHECK_THROWS_WITH(env.render("{% if is_happy %}{% if is_happy %}{% endif %}", data),
	"[inja.exception.parser_error] (at 1:46) unmatched if");
	CHECK_THROWS_WITH(env.render("{% if is_happy %}{% else if is_happy %}{% end if %}", data),
	"[inja.exception.parser_error] (at 1:43) expected statement, got 'end'");
	}

	SUBCASE("set statements") {
	CHECK(env.render("{% set predefined=true %}{% if predefined %}a{% endif %}", data) == "a");
	CHECK(env.render("{% set predefined=false %}{% if predefined %}a{% endif %}", data) == "");
	CHECK(env.render("{% set age=30 %}{{age}}", data) == "30");
	CHECK(env.render("{% set predefined.value=1 %}{% if existsIn(predefined, \"value\") %}{{predefined.value}}{% endif %}", data) == "1");
	CHECK(env.render("{% set brother.name=\"Bob\" %}{{brother.name}}", data) == "Bob");
	CHECK_THROWS_WITH(env.render("{% if predefined %}{% endif %}", data),
	"[inja.exception.render_error] (at 1:7) variable 'predefined' not found");
	CHECK(env.render("{{age}}", data) == "29");
	CHECK(env.render("{{brother.name}}", data) == "Chris");
	}

	SUBCASE("short circuit evaluation") {
	CHECK(env.render("{% if 0 and undefined %}do{% else %}nothing{% endif %}", data) == "nothing");
	CHECK_THROWS_WITH(env.render("{% if 1 and undefined %}do{% else %}nothing{% endif %}", data),
	"[inja.exception.render_error] (at 1:13) variable 'undefined' not found");
	}

	SUBCASE("line statements") {
	CHECK(env.render(R""""(## if is_happy
	Yeah!
	## endif)"""",
	data) == R""""(Yeah!
	)"""");

	CHECK(env.render(R""""(## if is_happy
	## if is_happy
	Yeah!
	## endif
	## endif )"""",
	data) == R""""(Yeah!
	)"""");
	}
	}

	TEST_CASE("templates") {
	json data;
	data["name"] = "Peter";
	data["city"] = "Brunswick";
	data["is_happy"] = true;

	SUBCASE("reuse") {
	inja::Environment env;
	inja::Template temp = env.parse("{% if is_happy %}{{ name }}{% else %}{{ city }}{% endif %}");

	CHECK(env.render(temp, data) == "Peter");

	data["is_happy"] = false;

	CHECK(env.render(temp, data) == "Brunswick");
	}

	SUBCASE("include") {
	inja::Environment env;
	inja::Template t1 = env.parse("Hello {{ name }}");
	env.include_template("greeting", t1);

	inja::Template t2 = env.parse("{% include \"greeting\" %}!");
	CHECK(env.render(t2, data) == "Hello Peter!");
	CHECK_THROWS_WITH(env.parse("{% include \"does-not-exist\" %}!"),
	"[inja.exception.file_error] failed accessing file at 'does-not-exist'");
	}

	SUBCASE("include-in-loop") {
	json loop_data;
	loop_data["cities"] = json::array({{{"name", "Munich"}}, {{"name", "New York"}}});

	inja::Environment env;
	env.include_template("city.tpl", env.parse("{{ loop.index }}:{{ city.name }};"));

	CHECK(env.render("{% for city in cities %}{% include \"city.tpl\" %}{% endfor %}", loop_data) ==
	"0:Munich;1:New York;");
	}

	SUBCASE("count variables") {
	inja::Environment env;
	inja::Template t1 = env.parse("Hello {{ name }}");
	inja::Template t2 = env.parse("{% if is_happy %}{{ name }}{% else %}{{ city }}{% endif %}");
	inja::Template t3 = env.parse("{% if at(name, test) %}{{ name }}{% else %}{{ city }}{{ upper(city) }}{% endif %}");

	CHECK(t1.count_variables() == 1);
	CHECK(t2.count_variables() == 3);
	CHECK(t3.count_variables() == 5);
	}

	SUBCASE("whitespace control") {
	inja::Environment env;
	CHECK(env.render("{% if is_happy %}{{ name }}{% endif %}", data) == "Peter");
	CHECK(env.render(" {% if is_happy %}{{ name }}{% endif %} ", data) == " Peter ");
	CHECK(env.render(" {% if is_happy %}{{ name }}{% endif %}\n ", data) == " Peter\n ");
	CHECK(env.render("Test\n {%- if is_happy %}{{ name }}{% endif %} ", data) == "Test\nPeter ");
	CHECK(env.render(" {%+ if is_happy %}{{ name }}{% endif %}", data) == " Peter");
	CHECK(env.render(" {%- if is_happy %}{{ name }}{% endif -%} \n ", data) == "Peter");

	CHECK(env.render(" {{- name -}} \n ", data) == "Peter");
	CHECK(env.render("Test\n {{- name }} ", data) == "Test\nPeter ");
	CHECK(env.render(" {{ name }}\n ", data) == " Peter\n ");
	CHECK(env.render("{{ name }}{# name -#} !", data) == "Peter!");
	CHECK(env.render(" {#- name -#} !", data) == "!");

	// Nothing will be stripped if there are other characters before the start of the block.
	CHECK(env.render(". {%- if is_happy %}{{ name }}{% endif -%}\n", data) == ". Peter");
	CHECK(env.render(". {#- comment -#}\n.", data) == ". .");

	env.set_lstrip_blocks(true);
	CHECK(env.render("Hello {{ name }}!", data) == "Hello Peter!");
	CHECK(env.render(" {% if is_happy %}{{ name }}{% endif %}", data) == "Peter");
	CHECK(env.render(" {% if is_happy %}{{ name }}{% endif %} ", data) == "Peter ");
	CHECK(env.render(" {% if is_happy %}{{ name }}{% endif -%} ", data) == "Peter");
	CHECK(env.render(" {%+ if is_happy %}{{ name }}{% endif %}", data) == " Peter");
	CHECK(env.render("\n {%+ if is_happy %}{{ name }}{% endif -%} ", data) == "\n Peter");
	CHECK(env.render("{% if is_happy %}{{ name }}{% endif %}\n", data) == "Peter\n");
	CHECK(env.render(" {# comment #}", data) == "");

	env.set_trim_blocks(true);
	CHECK(env.render("{% if is_happy %}{{ name }}{% endif %}", data) == "Peter");
	CHECK(env.render("{% if is_happy %}{{ name }}{% endif %}\n", data) == "Peter");
	CHECK(env.render("{% if is_happy %}{{ name }}{% endif %} \n.", data) == "Peter.");
	CHECK(env.render("{%- if is_happy %}{{ name }}{% endif -%} \n.", data) == "Peter.");
	CHECK(env.render(" {# comment #} \n.", data) == ".");
	}
	}

	TEST_CASE("other syntax") {
	json data;
	data["name"] = "Peter";
	data["city"] = "Brunswick";
	data["age"] = 29;
	data["names"] = {"Jeff", "Seb"};
	data["brother"]["name"] = "Chris";
	data["brother"]["daughters"] = {"Maria", "Helen"};
	data["brother"]["daughter0"] = {{"name", "Maria"}};
	data["is_happy"] = true;

	SUBCASE("other expression syntax") {
	inja::Environment env;

	CHECK(env.render("Hello {{ name }}!", data) == "Hello Peter!");

	env.set_expression("(&", "&)");

	CHECK(env.render("Hello {{ name }}!", data) == "Hello {{ name }}!");
	CHECK(env.render("Hello (& name &)!", data) == "Hello Peter!");
	}

	SUBCASE("other comment syntax") {
	inja::Environment env;
	env.set_comment("(&", "&)");

	CHECK(env.render("Hello {# Test #}", data) == "Hello {# Test #}");
	CHECK(env.render("Hello (& Test &)", data) == "Hello ");
	}

	SUBCASE("multiple changes") {
	inja::Environment env;
	env.set_line_statement("$$");
	env.set_expression("<%", "%>");

	std::string string_template = R""""(Hello <%name%>
	$$ if name == "Peter"
	You really are <%name%>
	$$ endif
	)"""";

	CHECK(env.render(string_template, data) == "Hello Peter\n You really are Peter\n");
	}
	}