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Diffstat (limited to 'tests/template/~lambdas.yml')
| -rw-r--r-- | tests/template/~lambdas.yml | 149 |
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diff --git a/tests/template/~lambdas.yml b/tests/template/~lambdas.yml new file mode 100644 index 0000000..b9fb4d0 --- /dev/null +++ b/tests/template/~lambdas.yml @@ -0,0 +1,149 @@ +overview: | + Lambdas are a special-cased data type for use in interpolations and + sections. + + When used as the data value for an Interpolation tag, the lambda MUST be + treatable as an arity 0 function, and invoked as such. The returned value + MUST be rendered against the default delimiters, then interpolated in place + of the lambda. + + When used as the data value for a Section tag, the lambda MUST be treatable + as an arity 1 function, and invoked as such (passing a String containing the + unprocessed section contents). The returned value MUST be rendered against + the current delimiters, then interpolated in place of the section. +tests: + - name: Interpolation + desc: A lambda's return value should be interpolated. + data: + lambda: !code + ruby: 'proc { "world" }' + perl: 'sub { "world" }' + js: 'function() { return "world" }' + php: 'return "world";' + python: 'lambda: "world"' + clojure: '(fn [] "world")' + template: "Hello, {{lambda}}!" + expected: "Hello, world!" + + - name: Interpolation - Expansion + desc: A lambda's return value should be parsed. + data: + planet: "world" + lambda: !code + ruby: 'proc { "{{planet}}" }' + perl: 'sub { "{{planet}}" }' + js: 'function() { return "{{planet}}" }' + php: 'return "{{planet}}";' + python: 'lambda: "{{planet}}"' + clojure: '(fn [] "{{planet}}")' + template: "Hello, {{lambda}}!" + expected: "Hello, world!" + + - name: Interpolation - Alternate Delimiters + desc: A lambda's return value should parse with the default delimiters. + data: + planet: "world" + lambda: !code + ruby: 'proc { "|planet| => {{planet}}" }' + perl: 'sub { "|planet| => {{planet}}" }' + js: 'function() { return "|planet| => {{planet}}" }' + php: 'return "|planet| => {{planet}}";' + python: 'lambda: "|planet| => {{planet}}"' + clojure: '(fn [] "|planet| => {{planet}}")' + template: "{{= | | =}}\nHello, (|&lambda|)!" + expected: "Hello, (|planet| => world)!" + + - name: Interpolation - Multiple Calls + desc: Interpolated lambdas should not be cached. + data: + lambda: !code + ruby: 'proc { $calls ||= 0; $calls += 1 }' + perl: 'sub { no strict; $calls += 1 }' + js: 'function() { return (g=(function(){return this})()).calls=(g.calls||0)+1 }' + php: 'global $calls; return ++$calls;' + python: 'lambda: globals().update(calls=globals().get("calls",0)+1) or calls' + clojure: '(def g (atom 0)) (fn [] (swap! g inc))' + template: '{{lambda}} == {{{lambda}}} == {{lambda}}' + expected: '1 == 2 == 3' + + - name: Escaping + desc: Lambda results should be appropriately escaped. + data: + lambda: !code + ruby: 'proc { ">" }' + perl: 'sub { ">" }' + js: 'function() { return ">" }' + php: 'return ">";' + python: 'lambda: ">"' + clojure: '(fn [] ">")' + template: "<{{lambda}}{{{lambda}}}" + expected: "<>>" + + - name: Section + desc: Lambdas used for sections should receive the raw section string. + data: + x: 'Error!' + lambda: !code + ruby: 'proc { |text| text == "{{x}}" ? "yes" : "no" }' + perl: 'sub { $_[0] eq "{{x}}" ? "yes" : "no" }' + js: 'function(txt) { return (txt == "{{x}}" ? "yes" : "no") }' + php: 'return ($text == "{{x}}") ? "yes" : "no";' + python: 'lambda text: text == "{{x}}" and "yes" or "no"' + clojure: '(fn [text] (if (= text "{{x}}") "yes" "no"))' + template: "<{{#lambda}}{{x}}{{/lambda}}>" + expected: "<yes>" + + - name: Section - Expansion + desc: Lambdas used for sections should have their results parsed. + data: + planet: "Earth" + lambda: !code + ruby: 'proc { |text| "#{text}{{planet}}#{text}" }' + perl: 'sub { $_[0] . "{{planet}}" . $_[0] }' + js: 'function(txt) { return txt + "{{planet}}" + txt }' + php: 'return $text . "{{planet}}" . $text;' + python: 'lambda text: "%s{{planet}}%s" % (text, text)' + clojure: '(fn [text] (str text "{{planet}}" text))' + template: "<{{#lambda}}-{{/lambda}}>" + expected: "<-Earth->" + + - name: Section - Alternate Delimiters + desc: Lambdas used for sections should parse with the current delimiters. + data: + planet: "Earth" + lambda: !code + ruby: 'proc { |text| "#{text}{{planet}} => |planet|#{text}" }' + perl: 'sub { $_[0] . "{{planet}} => |planet|" . $_[0] }' + js: 'function(txt) { return txt + "{{planet}} => |planet|" + txt }' + php: 'return $text . "{{planet}} => |planet|" . $text;' + python: 'lambda text: "%s{{planet}} => |planet|%s" % (text, text)' + clojure: '(fn [text] (str text "{{planet}} => |planet|" text))' + template: "{{= | | =}}<|#lambda|-|/lambda|>" + expected: "<-{{planet}} => Earth->" + + - name: Section - Multiple Calls + desc: Lambdas used for sections should not be cached. + data: + lambda: !code + ruby: 'proc { |text| "__#{text}__" }' + perl: 'sub { "__" . $_[0] . "__" }' + js: 'function(txt) { return "__" + txt + "__" }' + php: 'return "__" . $text . "__";' + python: 'lambda text: "__%s__" % (text)' + clojure: '(fn [text] (str "__" text "__"))' + template: '{{#lambda}}FILE{{/lambda}} != {{#lambda}}LINE{{/lambda}}' + expected: '__FILE__ != __LINE__' + + - name: Inverted Section + desc: Lambdas used for inverted sections should be considered truthy. + data: + static: 'static' + lambda: !code + ruby: 'proc { |text| false }' + perl: 'sub { 0 }' + js: 'function(txt) { return false }' + php: 'return false;' + python: 'lambda text: 0' + clojure: '(fn [text] false)' + template: "<{{^lambda}}{{static}}{{/lambda}}>" + expected: "<>" |