gfile

gfile is an implementation of gbytes' BufferProvider interface that allows you to make assertions on the contents of files as they are updated using the ginkgo testing framework.

Installation

go get github.com/BooleanCat/gfile

Usage

Below is an example usage of gfile.Buffer to check that a logfile has had a specific message written to it.

...
Context("when writing to a log file", func() {
    var (
        buffer *gfile.Buffer
        err    error
    )

    BeforeEach(func() {
        buffer, err = gfile.NewBuffer("/tmp/foo")
        Expect(err).NotTo(HaveOccurred())
    })

    AfterEach(func() {
        err := buffer.Close()
        Expect(err).NotTo(HaveOccurred())
    })

    It("can be read back", func() {
        WriteToLog("/tmp/foo")
        Eventually(buffer).Should(gbytes.Say("I'm a log message"))
    })
})
...