Add appengine/gcloud/mustache dependencies.

pkg/mustache/test/spec/sections.yml

+overview: |
+  Section tags and End Section tags are used in combination to wrap a section
+  of the template for iteration
+
+  These tags' content MUST be a non-whitespace character sequence NOT
+  containing the current closing delimiter; each Section tag MUST be followed
+  by an End Section tag with the same content within the same section.
+
+  This tag's content names the data to replace the tag.  Name resolution is as
+  follows:
+    1) Split the name on periods; the first part is the name to resolve, any
+    remaining parts should be retained.
+    2) Walk the context stack from top to bottom, finding the first context
+    that is a) a hash containing the name as a key OR b) an object responding
+    to a method with the given name.
+    3) If the context is a hash, the data is the value associated with the
+    name.
+    4) If the context is an object and the method with the given name has an
+    arity of 1, the method SHOULD be called with a String containing the
+    unprocessed contents of the sections; the data is the value returned.
+    5) Otherwise, the data is the value returned by calling the method with
+    the given name.
+    6) If any name parts were retained in step 1, each should be resolved
+    against a context stack containing only the result from the former
+    resolution.  If any part fails resolution, the result should be considered
+    falsey, and should interpolate as the empty string.
+  If the data is not of a list type, it is coerced into a list as follows: if
+  the data is truthy (e.g. `!!data == true`), use a single-element list
+  containing the data, otherwise use an empty list.
+
+  For each element in the data list, the element MUST be pushed onto the
+  context stack, the section MUST be rendered, and the element MUST be popped
+  off the context stack.
+
+  Section and End Section tags SHOULD be treated as standalone when
+  appropriate.
+tests:
+  - name: Truthy
+    desc: Truthy sections should have their contents rendered.
+    data: { boolean: true }
+    template: '"{{#boolean}}This should be rendered.{{/boolean}}"'
+    expected: '"This should be rendered."'
+
+  - name: Falsey
+    desc: Falsey sections should have their contents omitted.
+    data: { boolean: false }
+    template: '"{{#boolean}}This should not be rendered.{{/boolean}}"'
+    expected: '""'
+
+  - name: Context
+    desc: Objects and hashes should be pushed onto the context stack.
+    data: { context: { name: 'Joe' } }
+    template: '"{{#context}}Hi {{name}}.{{/context}}"'
+    expected: '"Hi Joe."'
+
+  - name: Deeply Nested Contexts
+    desc: All elements on the context stack should be accessible.
+    data:
+      a: { one: 1 }
+      b: { two: 2 }
+      c: { three: 3 }
+      d: { four: 4 }
+      e: { five: 5 }
+    template: |
+      {{#a}}
+      {{one}}
+      {{#b}}
+      {{one}}{{two}}{{one}}
+      {{#c}}
+      {{one}}{{two}}{{three}}{{two}}{{one}}
+      {{#d}}
+      {{one}}{{two}}{{three}}{{four}}{{three}}{{two}}{{one}}
+      {{#e}}
+      {{one}}{{two}}{{three}}{{four}}{{five}}{{four}}{{three}}{{two}}{{one}}
+      {{/e}}
+      {{one}}{{two}}{{three}}{{four}}{{three}}{{two}}{{one}}
+      {{/d}}
+      {{one}}{{two}}{{three}}{{two}}{{one}}
+      {{/c}}
+      {{one}}{{two}}{{one}}
+      {{/b}}
+      {{one}}
+      {{/a}}
+    expected: |
+      1
+      121
+      12321
+      1234321
+      123454321
+      1234321
+      12321
+      121
+      1
+
+  - name: List
+    desc: Lists should be iterated; list items should visit the context stack.
+    data: { list: [ { item: 1 }, { item: 2 }, { item: 3 } ] }
+    template: '"{{#list}}{{item}}{{/list}}"'
+    expected: '"123"'
+
+  - name: Empty List
+    desc: Empty lists should behave like falsey values.
+    data: { list: [ ] }
+    template: '"{{#list}}Yay lists!{{/list}}"'
+    expected: '""'
+
+  - name: Doubled
+    desc: Multiple sections per template should be permitted.
+    data: { bool: true, two: 'second' }
+    template: |
+      {{#bool}}
+      * first
+      {{/bool}}
+      * {{two}}
+      {{#bool}}
+      * third
+      {{/bool}}
+    expected: |
+      * first
+      * second
+      * third
+
+  - name: Nested (Truthy)
+    desc: Nested truthy sections should have their contents rendered.
+    data: { bool: true }
+    template: "| A {{#bool}}B {{#bool}}C{{/bool}} D{{/bool}} E |"
+    expected: "| A B C D E |"
+
+  - name: Nested (Falsey)
+    desc: Nested falsey sections should be omitted.
+    data: { bool: false }
+    template: "| A {{#bool}}B {{#bool}}C{{/bool}} D{{/bool}} E |"
+    expected: "| A  E |"
+
+  - name: Context Misses
+    desc: Failed context lookups should be considered falsey.
+    data: { }
+    template: "[{{#missing}}Found key 'missing'!{{/missing}}]"
+    expected: "[]"
+
+  # Implicit Iterators
+
+  - name: Implicit Iterator - String
+    desc: Implicit iterators should directly interpolate strings.
+    data:
+      list: [ 'a', 'b', 'c', 'd', 'e' ]
+    template: '"{{#list}}({{.}}){{/list}}"'
+    expected: '"(a)(b)(c)(d)(e)"'
+
+  - name: Implicit Iterator - Integer
+    desc: Implicit iterators should cast integers to strings and interpolate.
+    data:
+      list: [ 1, 2, 3, 4, 5 ]
+    template: '"{{#list}}({{.}}){{/list}}"'
+    expected: '"(1)(2)(3)(4)(5)"'
+
+  - name: Implicit Iterator - Decimal
+    desc: Implicit iterators should cast decimals to strings and interpolate.
+    data:
+      list: [ 1.10, 2.20, 3.30, 4.40, 5.50 ]
+    template: '"{{#list}}({{.}}){{/list}}"'
+    expected: '"(1.1)(2.2)(3.3)(4.4)(5.5)"'
+
+  # Dotted Names
+
+  - name: Dotted Names - Truthy
+    desc: Dotted names should be valid for Section tags.
+    data: { a: { b: { c: true } } }
+    template: '"{{#a.b.c}}Here{{/a.b.c}}" == "Here"'
+    expected: '"Here" == "Here"'
+
+  - name: Dotted Names - Falsey
+    desc: Dotted names should be valid for Section tags.
+    data: { a: { b: { c: false } } }
+    template: '"{{#a.b.c}}Here{{/a.b.c}}" == ""'
+    expected: '"" == ""'
+
+  - name: Dotted Names - Broken Chains
+    desc: Dotted names that cannot be resolved should be considered falsey.
+    data: { a: { } }
+    template: '"{{#a.b.c}}Here{{/a.b.c}}" == ""'
+    expected: '"" == ""'
+
+  # Whitespace Sensitivity
+
+  - name: Surrounding Whitespace
+    desc: Sections should not alter surrounding whitespace.
+    data: { boolean: true }
+    template: " | {{#boolean}}\t|\t{{/boolean}} | \n"
+    expected: " | \t|\t | \n"
+
+  - name: Internal Whitespace
+    desc: Sections should not alter internal whitespace.
+    data: { boolean: true }
+    template: " | {{#boolean}} {{! Important Whitespace }}\n {{/boolean}} | \n"
+    expected: " |  \n  | \n"
+
+  - name: Indented Inline Sections
+    desc: Single-line sections should not alter surrounding whitespace.
+    data: { boolean: true }
+    template: " {{#boolean}}YES{{/boolean}}\n {{#boolean}}GOOD{{/boolean}}\n"
+    expected: " YES\n GOOD\n"
+
+  - name: Standalone Lines
+    desc: Standalone lines should be removed from the template.
+    data: { boolean: true }
+    template: |
+      | This Is
+      {{#boolean}}
+      |
+      {{/boolean}}
+      | A Line
+    expected: |
+      | This Is
+      |
+      | A Line
+
+  - name: Indented Standalone Lines
+    desc: Indented standalone lines should be removed from the template.
+    data: { boolean: true }
+    template: |
+      | This Is
+        {{#boolean}}
+      |
+        {{/boolean}}
+      | A Line
+    expected: |
+      | This Is
+      |
+      | A Line
+
+  - name: Standalone Line Endings
+    desc: '"\r\n" should be considered a newline for standalone tags.'
+    data: { boolean: true }
+    template: "|\r\n{{#boolean}}\r\n{{/boolean}}\r\n|"
+    expected: "|\r\n|"
+
+  - name: Standalone Without Previous Line
+    desc: Standalone tags should not require a newline to precede them.
+    data: { boolean: true }
+    template: "  {{#boolean}}\n#{{/boolean}}\n/"
+    expected: "#\n/"
+
+  - name: Standalone Without Newline
+    desc: Standalone tags should not require a newline to follow them.
+    data: { boolean: true }
+    template: "#{{#boolean}}\n/\n  {{/boolean}}"
+    expected: "#\n/\n"
+
+  # Whitespace Insensitivity
+
+  - name: Padding
+    desc: Superfluous in-tag whitespace should be ignored.
+    data: { boolean: true }
+    template: '|{{# boolean }}={{/ boolean }}|'
+    expected: '|=|'