entropychecker_test.go

package entropychecker

import (
	"testing"
	"time"
)

func TestEntropyChecker(t *testing.T) {
	err := WaitForEntropy()
	if err != nil {
		t.Error(err)
		return
	}

	entropy, err := GetEntropy()
	if err != nil {
		t.Error(err)
		return
	}

	if entropy < MinimumEntropy {
		t.Error("Insufficient entropy not properly detected")
		return
	}

	Timeout = 0
	err = WaitForEntropy()
	if err != nil {
		t.Error(err)
		return
	}
}

func TestFailure(t *testing.T) {
	// Make sure we get a an error if we time out
	Timeout = 200 * time.Millisecond
	MinimumEntropy = 100000
	err := WaitForEntropy()
	if err == nil {
		t.Error("Should get error when timeout waited too long")
	}

	// Make sure an unspported OS returns an error (instead of unkown behavior)
	supportedOS = "unknown"
	Timeout = 10 * time.Second
	MinimumEntropy = 128
	_, err = GetEntropy()
	if err == nil {
		t.Error("Should get error when using unknown OS")
	}
	err = WaitForEntropy()
	if err == nil {
		t.Error("Should get error when using unknown OS")
	}

}