Fixes mocha tests (#2723)
Fixes mocha tests (#2723)


google/blockly,mark-friedman/blockly,google/blockly,picklesrus/blockly,mark-friedman/blockly,rachel-fenichel/blockly,google/blockly,rachel-fenichel/blockly,google/blockly,rachel-fenichel/blockly,rachel-fenichel/blockly,mark-friedman/blockly,mark-friedman/blockly,rachel-fenichel/blockly,picklesrus/blockly,picklesrus/blockly,google/blockly,rachel-fenichel/blockly,google/blockly,rachel-fenichel/blockly,google/blockly,mark-friedman/blockly,mark-friedman/blockly