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asserts.md

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Asserts

You can directly call m.pass() or m.fail() within a test case to mark it as passed or failed. Alternatively, roca offers an assert library (similar to Chai), available via m.assert. These methods will call m.pass() or m.fail() for you.


m.pass()

Marks a unit test as passing. If the test case has previously been marked as failed, then this results in a no-op.

Parameters

None.

Return value

None.

Usage

m.it("passes", sub()
    m.pass()
end sub)

m.fail()

Marks a unit test as failing. Only the first failure encountered in a test case will be reported, and it will override any prior calls to m.pass.

Parameters

None.

Return value

None.

Usage

m.it("fails", sub()
    m.fail()
end sub)

m.assert.equal(actual, expected, errorMessage)

Compares two primitive values for equality.

Parameters

actual dynamic (primitive)
The value that was calculated in your test case.

expected dynamic (primitive)
The expected value to compare against.

errorMessage string
The error message to display if the values are not equal.

Return value

None.

Usage

m.it("test case", sub()
    m.assert.equal("foo", "foo", "whoops, these should be equal")
end sub)

m.assert.deepEquals(actual, expected, errorMessage)

Compares two values of any type for equality. It will recursively compare objects and arrays.

Parameters

actual dynamic
The value that was calculated in your test case.

expected dynamic
The expected value to compare against.

errorMessage string
The error message to display if the values are not equal.

Return value

None.

Usage

m.it("test case", sub()
    foo = { a: { b: ["c", "d"] }}
    bar = { a: { b: ["c", "e"] }}
    m.assert.deepEquals(foo, bar, "whoops, these should be equal")
end sub)

m.assert.hasBeenCalled(mock, errorMessage = invalid)

Verifies that a mock function has been called at least one time.

Parameters

mock object
The mock function that was returned from _brs_.mockFunction.

errorMessage string optional
The error message to display if the mock was not called. If you don't pass an error message, one will automatically be created for you.

Return value

None.

Usage

m.it("test case", sub()
    mock = _brs_.mockFunction("foo")
    foo()
    m.assert.hasBeenCalled(mock)
end sub)

m.assert.hasBeenCalledTimes(mock, callCount, errorMessage = invalid)

Verifies that a mock function has been called a certain number of times.

Parameters

mock object
The mock function that was returned from _brs_.mockFunction.

callCount integer
The number of times this mock should have been called.

errorMessage string optional
The error message to display if the mock was not called. If you don't pass an error message, one will automatically be created for you.

Return value

None.

Usage

m.it("test case", sub()
    mock = _brs_.mockFunction("foo")
    foo()
    foo()
    m.assert.hasBeenCalledTimes(mock, 2)
end sub)

m.assert.hasBeenCalledWith(mock, argsArray, errorMessage = invalid)

Verifies that a mock function has been called with certain arguments. Note that this will check against every call to the mock function.

Parameters

mock object
The mock function that was returned from _brs_.mockFunction.

argsArray array
An array of arguments to check against.

errorMessage string optional
The error message to display if the mock was not called. If you don't pass an error message, one will automatically be created for you.

Return value

None.

Usage

m.it("test case", sub()
    mock = _brs_.mockFunction("foo")
    foo("bar", 123, { baz: 456 })
    m.assert.hasBeenCalledWith(mock, ["bar", 123, { baz: 456 }])
end sub)

m.assert.notEqual(actual, expected, errorMessage)

Opposite of m.assert.equal. Compares two primitive values.

Parameters

actual dynamic (primitive)
The value that was calculated in your test case.

expected dynamic (primitive)
The expected value to compare against.

errorMessage string
The error message to display if the values are equal.

Return value

None.

Usage

m.it("test case", sub()
    m.assert.notEqual("foo", "not foo", "whoops, these should _not_ be equal")
end sub)

m.assert.isTrue(value, errorMessage)

Checks to see if a boolean value is true.

Parameters

value boolean
The value that was calculated in your test case.

errorMessage string
The error message to display if the value is not true.

Return value

None.

Usage

m.it("test case", sub()
    foo = true
    m.assert.isTrue(foo, "whoops, foo should be true")
end sub)

m.assert.isFalse(value, errorMessage)

Checks to see if a boolean value is false.

Parameters

value boolean
The value that was calculated in your test case.

errorMessage string
The error message to display if the value is not false.

Return value

None.

Usage:

m.it("test case", sub()
    foo = false
    m.assert.isFalse(foo, "whoops, foo should be false")
end sub)

m.assert.isValid(value, errorMessage)

Checks to see if a value is not invalid.

Parameters

value dynamic
The value that was calculated in your test case.

errorMessage string
The error message to display if the value is invalid.

Return value

None.

Usage:

m.it("test case", sub()
    foo = {}
    m.assert.isValid(foo, "whoops, foo should not be invalid")
end sub)

m.assert.isInvalid(value, errorMessage)

Checks to see if a value is invalid.

Parameters

value dynamic
The value that was calculated in your test case.

errorMessage string
The error message to display if the value is not invalid.

Return value

None.

Usage

m.it("test case", sub()
    foo = invalid
    m.assert.isInvalid(foo, "whoops, foo should be invalid")
end sub)