# Code coverage report for spec/subexpressions.js

## Statements: 13.33% (14 / 105) Branches: 0% (0 / 4) Functions: 2.56% (1 / 39) Lines: 13.33% (14 / 105) Ignored: none

All files » spec/ » subexpressions.js

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
    163
    164
    165
    166
    167
    168
    169
    170
    171
    172
    173
    174
    175
    176
    177
    178
    179
    180
    181
    182
    183
    184
    185
    186
    187
    188
    189
    190
    191
    192
    193
    194
    195
    196
    197
    198
    199
    200
    201
    202
    203
    204
    205
    206
    207
    208
    209
    210
    211
    212
    213
    214
    215
    216
    217
    3
    3

    3

    3

    3

    3

    3

    3

    3

    3

    3

    3

    3

    3

     /*global CompilerContext, shouldCompileTo */
    describe('subexpressions', function() {
      it("arg-less helper", function() {
        var string   = "{{foo (bar)}}!";
        var context  = {};
        var helpers  = {
          foo: function(val) {
            return val+val;
          },
          bar: function() {
            return "LOL";
          }
        };
        shouldCompileTo(string, [context, helpers], "LOLLOL!");
      });

      it("helper w args", function() {
        var string   = '{{blog (equal a b)}}';

        var context  = { bar: "LOL" };
        var helpers  = {
          blog: function(val) {
            return "val is " + val;
          },
          equal: function(x, y) {
            return x === y;
          }
        };
        shouldCompileTo(string, [context, helpers], "val is true");
      });

      it("mixed paths and helpers", function() {
        var string   = '{{blog baz.bat (equal a b) baz.bar}}';

        var context  = { bar: "LOL", baz: {bat: 'foo!', bar: 'bar!'} };
        var helpers  = {
          blog: function(val, that, theOther) {
            return "val is " + val + ', ' + that + ' and ' + theOther;
          },
          equal: function(x, y) {
            return x === y;
          }
        };
        shouldCompileTo(string, [context, helpers], "val is foo!, true and bar!");
      });

      it("supports much nesting", function() {
        var string   = '{{blog (equal (equal true true) true)}}';

        var context  = { bar: "LOL" };
        var helpers  = {
          blog: function(val) {
            return "val is " + val;
          },
          equal: function(x, y) {
            return x === y;
          }
        };
        shouldCompileTo(string, [context, helpers], "val is true");
      });

      it('GH-800 : Complex subexpressions', function() {
        var context  = {a: 'a', b:'b', c:{c:'c'}, d:'d', e: {e: 'e'}};
        var helpers  = {
          dash: function(a, b) {
            return a + "-" + b;
          },
          concat: function(a, b) {
            return a + b;
          }
        };

        shouldCompileTo('{{dash "abc" (concat a b)}}', [context, helpers], 'abc-ab');
        shouldCompileTo('{{dash d (concat a b)}}', [context, helpers], 'd-ab');
        shouldCompileTo('{{dash c.c (concat a b)}}', [context, helpers], 'c-ab');
        shouldCompileTo('{{dash (concat a b) c.c}}', [context, helpers], 'ab-c');
        shouldCompileTo('{{dash (concat a e.e) c.c}}', [context, helpers], 'ae-c');
      });

      it("provides each nested helper invocation its own options hash", function() {
        var string = '{{equal (equal true true) true}}';

        var lastOptions = null;
        var helpers  = {
          equal: function(x, y, options) {
            if (!options || options === lastOptions) {
              throw new Error("options hash was reused");
            }
            lastOptions = options;
            return x === y;
          }
        };
        shouldCompileTo(string, [{}, helpers], "true");
      });

      it("with hashes", function() {
        var string   = '{{blog (equal (equal true true) true fun="yes")}}';

        var context  = { bar: "LOL" };
        var helpers  = {
          blog: function(val) {
            return "val is " + val;
          },
          equal: function(x, y) {
            return x === y;
          }
        };
        shouldCompileTo(string, [context, helpers], "val is true");
      });

      it("as hashes", function() {
        var string   = '{{blog fun=(equal (blog fun=1) "val is 1")}}';

        var helpers  = {
          blog: function(options) {
            return "val is " + options.hash.fun;
          },
          equal: function(x, y) {
            return x === y;
          }
        };
        shouldCompileTo(string, [{}, helpers], "val is true");
      });

      it("multiple subexpressions in a hash", function() {
        var string = '{{input aria-label=(t "Name") placeholder=(t "Example User")}}';

        var helpers = {
          input: function(options) {
            var hash        = options.hash;
            var ariaLabel   = Handlebars.Utils.escapeExpression(hash['aria-label']);
            var placeholder = Handlebars.Utils.escapeExpression(hash.placeholder);
            return new Handlebars.SafeString('<input aria-label="' + ariaLabel + '" placeholder="' + placeholder + '" />');
          },
          t: function(defaultString) {
            return new Handlebars.SafeString(defaultString);
          }
        }
        shouldCompileTo(string, [{}, helpers], '<input aria-label="Name" placeholder="Example User" />');
      });

      it("in string params mode,", function() {
        var template = CompilerContext.compile('{{snog (blorg foo x=y) yeah a=b}}', {stringParams: true});

        var helpers = {
          snog: function(a, b, options) {
            equals(a, 'foo');
            equals(options.types.length, 2, "string params for outer helper processed correctly");
            equals(options.types[0], 'sexpr', "string params for outer helper processed correctly");
            equals(options.types[1], 'ID', "string params for outer helper processed correctly");
            return a + b;
          },

          blorg: function(a, options) {
            equals(options.types.length, 1, "string params for inner helper processed correctly");
            equals(options.types[0], 'ID', "string params for inner helper processed correctly");
            return a;
          }
        };

        var result = template({
          foo: {},
          yeah: {}
        }, {helpers: helpers});

        equals(result, "fooyeah");
      });

      it("as hashes in string params mode", function() {

        var template = CompilerContext.compile('{{blog fun=(bork)}}', {stringParams: true});

        var helpers  = {
          blog: function(options) {
            equals(options.hashTypes.fun, 'sexpr');
            return "val is " + options.hash.fun;
          },
          bork: function() {
            return "BORK";
          }
        };

        var result = template({}, {helpers: helpers});
        equals(result, "val is BORK");
      });

      it("subexpression functions on the context", function() {
        var string   = "{{foo (bar)}}!";
        var context  = {
          bar: function() {
            return "LOL";
          }
        };
        var helpers  = {
          foo: function(val) {
            return val+val;
          }
        };
        shouldCompileTo(string, [context, helpers], "LOLLOL!");
      });

      it("subexpressions can't just be property lookups", function() {
        var string   = "{{foo (bar)}}!";
        var context  = {
          bar: "LOL"
        };
        var helpers  = {
          foo: function(val) {
            return val+val;
          }
        };
        shouldThrow(function() {
          shouldCompileTo(string, [context, helpers], "LOLLOL!");
        });
      });
    });