The Difference Between toBe, toBeTruthy and toBeTrue

These methods are coming from Jasmine testing framework.

toBe

Jasmine defines toBe as:

getJasmineRequireObj().toBe = function() {
  function toBe() {
    return {
      compare: function(actual, expected) {
        return {
          pass: actual === expected
        };
      }
    };
  }

  return toBe;
};

This check is passed only if the variables comply with the following conditions.

toBeTruthy

Jasmine defines toBeTruthy as:

getJasmineRequireObj().toBeTruthy = function() {

  function toBeTruthy() {
    return {
      compare: function(actual) {
        return {
          pass: !!actual
        };
      }
    };
  }

  return toBeTruthy;
};

A value is truthy if the coercion of the given value to a boolean yields the value true.

toBeTrue

Jasmine defines toBeTrue as follows:

getJasmineRequireObj().toBeTrue = function() {
  /**
   * {@link expect} the actual value to be `true`.
   * @function
   * @name matchers#toBeTrue
   * @since 3.5.0
   * @example
   * expect(result).toBeTrue();
   */
  function toBeTrue() {
    return {
      compare: function(actual) {
        return {
          pass: actual === true
        };
      }
    };
  }

  return toBeTrue;
};

The difference with toBeTrue and toBe is that toBeTrue tests the argument for the Boolean type.