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package matchers_test
import (
"time"
. "github.com/onsi/gomega/matchers"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("BeSent", func() {
Context("when passed a channel and a matching type", func() {
Context("when the channel is ready to receive", func() {
It("should succeed and send the value down the channel", func() {
c := make(chan string)
d := make(chan string)
go func() {
val := <-c
d <- val
}()
time.Sleep(10 * time.Millisecond)
Expect(c).Should(BeSent("foo"))
Eventually(d).Should(Receive(Equal("foo")))
})
It("should succeed (with a buffered channel)", func() {
c := make(chan string, 1)
Expect(c).Should(BeSent("foo"))
Expect(<-c).Should(Equal("foo"))
})
})
Context("when the channel is not ready to receive", func() {
It("should fail and not send down the channel", func() {
c := make(chan string)
Expect(c).ShouldNot(BeSent("foo"))
Consistently(c).ShouldNot(Receive())
})
})
Context("when the channel is eventually ready to receive", func() {
It("should succeed", func() {
c := make(chan string)
d := make(chan string)
go func() {
time.Sleep(30 * time.Millisecond)
val := <-c
d <- val
}()
Eventually(c).Should(BeSent("foo"))
Eventually(d).Should(Receive(Equal("foo")))
})
})
Context("when the channel is closed", func() {
It("should error", func() {
c := make(chan string)
close(c)
success, err := (&BeSentMatcher{Arg: "foo"}).Match(c)
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
})
It("should short-circuit Eventually", func() {
c := make(chan string)
close(c)
t := time.Now()
failures := InterceptGomegaFailures(func() {
Eventually(c, 10.0).Should(BeSent("foo"))
})
Expect(failures).Should(HaveLen(1))
Expect(time.Since(t)).Should(BeNumerically("<", time.Second))
})
})
})
Context("when passed a channel and a non-matching type", func() {
It("should error", func() {
success, err := (&BeSentMatcher{Arg: "foo"}).Match(make(chan int, 1))
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
})
})
Context("when passed a receive-only channel", func() {
It("should error", func() {
var c <-chan string
c = make(chan string, 1)
success, err := (&BeSentMatcher{Arg: "foo"}).Match(c)
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
})
})
Context("when passed a nonchannel", func() {
It("should error", func() {
success, err := (&BeSentMatcher{Arg: "foo"}).Match("bar")
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
})
})
})
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