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47 lines
1.0 KiB
Go
47 lines
1.0 KiB
Go
package test_test
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import (
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"crypto/rand"
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"testing"
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. "github.com/onsi/ginkgo/v2"
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. "github.com/onsi/gomega"
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"riasc.eu/wice/test"
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)
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func TestSuite(t *testing.T) {
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RegisterFailHandler(Fail)
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RunSpecs(t, "Test Helper Suite")
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}
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var _ = test.SetupLogging()
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var _ = Describe("entropy", func() {
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Specify("that the entropy of an empty slice is zero", func() {
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Expect(test.Entropy([]byte{})).To(BeNumerically("==", 0))
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Expect(test.Entropy(nil)).To(BeNumerically("==", 0))
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})
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Specify("that the entropy of A is defined as", func() {
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Expect(test.Entropy([]byte("AAAAAAAAAAAAAA"))).To(BeZero())
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})
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Specify("that the entropy of A is defined as", func() {
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Expect(test.Entropy([]byte("This is some not-so random string"))).To(
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And(
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BeNumerically(">", 1),
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BeNumerically("<", 5),
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),
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)
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})
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Specify("that the entropy of random data", func() {
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random := make([]byte, 128)
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n, err := rand.Read(random)
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Expect(err).To(Succeed())
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Expect(n).To(Equal(128))
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Expect(test.Entropy(random)).To(BeNumerically(">", 5))
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})
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})
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