func TestMultipleRegistrations(t *testing.T) {
testcases := []struct {
name string // component
checker health.Checker // health checker
}{
{"component-alive", healthy},
{"component-up", healthy},
{"component-failed", failed},
{"component-dead", failed},
{"component-ok", healthy},
}
for _, tc := range testcases {
health.Register(tc.name, tc.checker)
}
assert.Len(t, health.Components(), len(testcases)) // all registered
all := health.RunChecks()
for _, tc := range testcases {
assert.Contains(t, health.Components(), tc.name)
_, found := all[tc.name]
assert.True(t, found)
assert.EqualValues(t, all[tc.name], tc.checker.Check(), tc.name)
}
teardown()
}
func TestDeregisterHealthCheck(t *testing.T) {
health.Register(COMPONENT, healthy)
health.Unregister(COMPONENT)
assert.Len(t, health.Components(), 0)
assert.NotContains(t, health.Components(), COMPONENT)
all := health.RunChecks()
assert.Len(t, all, 0)
teardown()
}
func TestRegisterFunc(t *testing.T) {
health.RegisterFunc(COMPONENT, alwaysFailing)
assert.Len(t, health.Components(), 1)
assert.Contains(t, health.Components(), COMPONENT)
all := health.RunChecks()
status, found := all[COMPONENT]
assert.True(t, found)
assert.EqualValues(t, status, alwaysFailing())
teardown()
}
func TestRegisterDuplicateHealthCheck(t *testing.T) {
health.Register(COMPONENT, healthy)
health.RegisterFunc(COMPONENT, alwaysFailing) // replace with failing health check
assert.Len(t, health.Components(), 1)
assert.Contains(t, health.Components(), COMPONENT)
all := health.RunChecks()
status, found := all[COMPONENT]
assert.True(t, found)
assert.EqualValues(t, status, alwaysFailing())
teardown()
}
// testify.TestSuite could be used to get automatic teardown cleanup after tests
func teardown() { // clear all components from health check set
for _, c := range health.Components() {
health.Unregister(c)
}
}