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signal_payload_test.go
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signal_payload_test.go
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package acmelib
import (
"testing"
"github.com/stretchr/testify/assert"
)
func Test_signalPayload_append(t *testing.T) {
assert := assert.New(t)
payload := newSignalPayload(16)
size4Type, err := NewIntegerSignalType("4_bits", 4, false)
assert.NoError(err)
size2Type, err := NewIntegerSignalType("2_bits", 2, false)
assert.NoError(err)
sig0, err := NewStandardSignal("sig_0", size4Type)
assert.NoError(err)
sig1, err := NewStandardSignal("sig_1", size4Type)
assert.NoError(err)
sig2, err := NewStandardSignal("sig_2", size4Type)
assert.NoError(err)
sig3, err := NewStandardSignal("sig_3", size4Type)
assert.NoError(err)
sig4, err := NewStandardSignal("sig_4", size2Type)
assert.NoError(err)
// should get this payload after appending sig0, sig1, sig2, and sig3
// 0 0 0 0 1 1 1 1 2 2 2 2 3 3 3 3
assert.NoError(payload.append(sig0))
assert.NoError(payload.append(sig1))
assert.NoError(payload.append(sig2))
assert.NoError(payload.append(sig3))
expectedStartBits := []int{0, 4, 8, 12}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
payload.removeAll()
// should get this payload after appending sig0, sig1, sig2, and sig4
// 0 0 0 0 1 1 1 1 2 2 2 2 4 4 - -
assert.NoError(payload.append(sig0))
assert.NoError(payload.append(sig1))
assert.NoError(payload.append(sig2))
assert.NoError(payload.append(sig4))
expectedStartBits = []int{0, 4, 8, 12}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
// should produce an error because sig3 will exceed the max payload size
assert.Error(payload.append(sig3))
}
func Test_signalPayload_insert(t *testing.T) {
assert := assert.New(t)
payload := newSignalPayload(16)
size2Type, err := NewIntegerSignalType("2_bits", 2, false)
assert.NoError(err)
size4Type, err := NewIntegerSignalType("4_bits", 4, false)
assert.NoError(err)
sig0, err := NewStandardSignal("sig_0", size4Type)
assert.NoError(err)
sig1, err := NewStandardSignal("sig_1", size4Type)
assert.NoError(err)
sig2, err := NewStandardSignal("sig_2", size4Type)
assert.NoError(err)
sig3, err := NewStandardSignal("sig_3", size4Type)
assert.NoError(err)
sig4, err := NewStandardSignal("sig_4", size2Type)
assert.NoError(err)
// should get this payload after inserting sig0, sig1, sig2, and sig3
// 3 3 3 3 1 1 1 1 2 2 2 2 0 0 0 0
assert.NoError(payload.verifyAndInsert(sig0, 12))
assert.NoError(payload.verifyAndInsert(sig1, 4))
assert.NoError(payload.verifyAndInsert(sig2, 8))
assert.NoError(payload.verifyAndInsert(sig3, 0))
expectedStartBits := []int{0, 4, 8, 12}
expectedNames := []string{"sig_3", "sig_1", "sig_2", "sig_0"}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
assert.Equal(expectedNames[idx], sig.Name())
}
// should return an error because there should be no space left
assert.Error(payload.verifyAndInsert(sig4, 0))
payload.removeAll()
// should get this payload after inserting sig0, sig1, sig2, and sig4
// 0 0 0 0 1 1 1 1 2 2 2 2 - - 4 4
assert.NoError(payload.verifyAndInsert(sig0, 0))
assert.NoError(payload.verifyAndInsert(sig1, 4))
assert.NoError(payload.verifyAndInsert(sig2, 8))
assert.NoError(payload.verifyAndInsert(sig4, 14))
expectedStartBits = []int{0, 4, 8, 14}
expectedNames = []string{"sig_0", "sig_1", "sig_2", "sig_4"}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
assert.Equal(expectedNames[idx], sig.Name())
}
// should return error because there should be not enough space left
assert.Error(payload.verifyAndInsert(sig3, 12))
// should return error because there another signal is already starting at bit 8
assert.Error(payload.verifyAndInsert(sig3, 8))
payload.removeAll()
// should return an error because sig0 of size 4 starting at 14 will exceed the payload size of 16
assert.Error(payload.verifyAndInsert(sig0, 14))
// should return an error because start bit is negative
assert.Error(payload.verifyAndInsert(sig0, -10))
}
func Test_signalPayload_remove(t *testing.T) {
assert := assert.New(t)
payload := newSignalPayload(16)
size4Type, err := NewIntegerSignalType("4_bits", 4, false)
assert.NoError(err)
sig0, err := NewStandardSignal("sig_0", size4Type)
assert.NoError(err)
sig1, err := NewStandardSignal("sig_1", size4Type)
assert.NoError(err)
sig2, err := NewStandardSignal("sig_2", size4Type)
assert.NoError(err)
sig3, err := NewStandardSignal("sig_3", size4Type)
assert.NoError(err)
// starting from this payload
// 0 0 0 0 1 1 1 1 2 2 2 2 3 3 3 3
assert.NoError(payload.verifyAndInsert(sig0, 0))
assert.NoError(payload.verifyAndInsert(sig1, 4))
assert.NoError(payload.verifyAndInsert(sig2, 8))
assert.NoError(payload.verifyAndInsert(sig3, 12))
// should get this after removing sig2
// 0 0 0 0 1 1 1 1 - - - - 3 3 3 3
payload.remove(sig2.EntityID())
expectedStartBits := []int{0, 4, 12}
expectedNames := []string{"sig_0", "sig_1", "sig_3"}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
assert.Equal(expectedNames[idx], sig.Name())
}
// should remove all signals
payload.remove(sig0.EntityID())
payload.remove(sig1.EntityID())
payload.remove(sig3.EntityID())
assert.Equal(0, len(payload.signals))
}
func Test_signalPayload_compact(t *testing.T) {
assert := assert.New(t)
payload := newSignalPayload(16)
size2Type, err := NewIntegerSignalType("2_bits", 2, false)
assert.NoError(err)
sig0, err := NewStandardSignal("sig_0", size2Type)
assert.NoError(err)
sig1, err := NewStandardSignal("sig_1", size2Type)
assert.NoError(err)
sig2, err := NewStandardSignal("sig_2", size2Type)
assert.NoError(err)
sig3, err := NewStandardSignal("sig_3", size2Type)
assert.NoError(err)
// starting from this payload
// - - 0 0 - - 1 1 - - 2 2 - - 3 3
assert.NoError(payload.verifyAndInsert(sig0, 2))
assert.NoError(payload.verifyAndInsert(sig1, 6))
assert.NoError(payload.verifyAndInsert(sig2, 10))
assert.NoError(payload.verifyAndInsert(sig3, 14))
// should get this after compacting
// 0 0 1 1 2 2 3 3 - - - - - - - -
payload.compact()
expectedStartBits := []int{0, 2, 4, 6}
expectedNames := []string{"sig_0", "sig_1", "sig_2", "sig_3"}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
assert.Equal(expectedNames[idx], sig.Name())
}
payload.removeAll()
// starting from this payload
// 0 0 - - - - 1 1 - - - 2 2 - 3 3
assert.NoError(payload.verifyAndInsert(sig0, 0))
assert.NoError(payload.verifyAndInsert(sig1, 6))
assert.NoError(payload.verifyAndInsert(sig2, 11))
assert.NoError(payload.verifyAndInsert(sig3, 14))
// should get this after compacting
// 0 0 1 1 2 2 3 3 - - - - - - - -
payload.compact()
expectedStartBits = []int{0, 2, 4, 6}
expectedNames = []string{"sig_0", "sig_1", "sig_2", "sig_3"}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
assert.Equal(expectedNames[idx], sig.Name())
}
}
func Test_signalPayload_modifyStartBitsOnShrink(t *testing.T) {
assert := assert.New(t)
payload := newSignalPayload(16)
size2Type, err := NewIntegerSignalType("2_bits", 2, false)
assert.NoError(err)
size4Type, err := NewIntegerSignalType("4_bits", 4, false)
assert.NoError(err)
sig0, err := NewStandardSignal("sig_0", size2Type)
assert.NoError(err)
sig1, err := NewStandardSignal("sig_1", size4Type)
assert.NoError(err)
sig2, err := NewStandardSignal("sig_2", size2Type)
assert.NoError(err)
sig3, err := NewStandardSignal("sig_3", size2Type)
assert.NoError(err)
// starting from this payload
// 0 0 - - 1 1 1 1 - 2 2 - 3 3 - -
assert.NoError(payload.verifyAndInsert(sig0, 0))
assert.NoError(payload.verifyAndInsert(sig1, 4))
assert.NoError(payload.verifyAndInsert(sig2, 9))
assert.NoError(payload.verifyAndInsert(sig3, 12))
// should get this one after shrinking sig1 by 1
// 0 0 - - 1 1 1 - 2 2 - 3 3 - - -
assert.NoError(payload.modifyStartBitsOnShrink(sig1, 1))
expectedStartBits := []int{0, 4, 8, 11}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
// should get this one after shrinking sig0 by 1
// 0 - - 1 1 1 - 2 2 - 3 3 - - - -
assert.NoError(payload.modifyStartBitsOnShrink(sig0, 1))
expectedStartBits = []int{0, 3, 7, 10}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
payload.removeAll()
// starting from this payload
// 0 0 1 1 1 1 2 2 3 3 - - - - - -
assert.NoError(payload.verifyAndInsert(sig0, 0))
assert.NoError(payload.verifyAndInsert(sig1, 2))
assert.NoError(payload.verifyAndInsert(sig2, 6))
assert.NoError(payload.verifyAndInsert(sig3, 8))
// should get this one after shrinking sig1 by 2
// 0 0 1 1 2 2 3 3 - - - - - - - -
assert.NoError(payload.modifyStartBitsOnShrink(sig1, 2))
expectedStartBits = []int{0, 2, 4, 6}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
payload.removeAll()
// starting from this payload
// - - - - - - - - - - 0 0 - - - -
assert.NoError(payload.verifyAndInsert(sig0, 10))
// should get this one after shrinking sig0 by 1
// - - - - - - - - - - 0 - - - - -
assert.NoError(payload.modifyStartBitsOnShrink(sig0, 1))
assert.Equal(10, payload.signals[0].GetStartBit())
// should do nothing
assert.NoError(payload.modifyStartBitsOnShrink(sig0, 0))
assert.Equal(10, payload.signals[0].GetStartBit())
// should return an error because amount is negative
assert.Error(payload.modifyStartBitsOnShrink(sig0, -1))
payload.removeAll()
// starting from this payload
// 0 0 - - - - - - - - - - - - - -
assert.NoError(payload.append(sig0))
// should return an error because amount is greater then the signal size
assert.Error(payload.modifyStartBitsOnShrink(sig0, 3))
// should return an error because amount is greater equal to the signal size
assert.Error(payload.modifyStartBitsOnShrink(sig0, 2))
}
func Test_signalPayload_modifyStartBitsOnGrow(t *testing.T) {
assert := assert.New(t)
payload := newSignalPayload(16)
size2Type, err := NewIntegerSignalType("2_bits", 2, false)
assert.NoError(err)
size4Type, err := NewIntegerSignalType("4_bits", 4, false)
assert.NoError(err)
sig0, err := NewStandardSignal("sig_0", size2Type)
assert.NoError(err)
sig1, err := NewStandardSignal("sig_1", size4Type)
assert.NoError(err)
sig2, err := NewStandardSignal("sig_2", size2Type)
assert.NoError(err)
sig3, err := NewStandardSignal("sig_3", size2Type)
assert.NoError(err)
// starting from this payload
// 0 0 - - 1 1 1 1 - 2 2 - 3 3 - -
assert.NoError(payload.verifyAndInsert(sig0, 0))
assert.NoError(payload.verifyAndInsert(sig1, 4))
assert.NoError(payload.verifyAndInsert(sig2, 9))
assert.NoError(payload.verifyAndInsert(sig3, 12))
// should get this one after growing sig0 by 1
// 0 0 0 - 1 1 1 1 1 1 1 2 2 3 3 -
assert.NoError(payload.modifyStartBitsOnGrow(sig0, 1))
expectedStartBits := []int{0, 4, 9, 12}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
payload.removeAll()
// starting from this payload
// 0 0 - - 1 1 1 1 - 2 2 - 3 3 - -
assert.NoError(payload.verifyAndInsert(sig0, 0))
assert.NoError(payload.verifyAndInsert(sig1, 4))
assert.NoError(payload.verifyAndInsert(sig2, 9))
assert.NoError(payload.verifyAndInsert(sig3, 12))
// should get this one after growing sig1 by 3
// 0 0 - - 1 1 1 1 1 1 1 2 2 3 3 -
assert.NoError(payload.modifyStartBitsOnGrow(sig1, 3))
expectedStartBits = []int{0, 4, 11, 13}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
payload.removeAll()
// starting from this payload
// 0 0 1 1 1 1 2 2 3 3 - - - - - -
assert.NoError(payload.verifyAndInsert(sig0, 0))
assert.NoError(payload.verifyAndInsert(sig1, 2))
assert.NoError(payload.verifyAndInsert(sig2, 6))
assert.NoError(payload.verifyAndInsert(sig3, 8))
// should get this one after growing sig0 by 6
// 0 0 0 0 0 0 0 0 1 1 1 1 2 2 3 3
assert.NoError(payload.modifyStartBitsOnGrow(sig0, 6))
expectedStartBits = []int{0, 8, 12, 14}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
payload.removeAll()
// starting from this payload
// 0 0 1 1 1 1 2 2 3 3 - - - - - -
assert.NoError(payload.verifyAndInsert(sig0, 0))
assert.NoError(payload.verifyAndInsert(sig1, 2))
assert.NoError(payload.verifyAndInsert(sig2, 6))
assert.NoError(payload.verifyAndInsert(sig3, 8))
// should get an error after trying to grow sig0 by 8
assert.Error(payload.modifyStartBitsOnGrow(sig0, 8))
// should get an error after trying to grow sig1 by 8
assert.Error(payload.modifyStartBitsOnGrow(sig1, 8))
// should get an error after trying to grow sig2 by 8
assert.Error(payload.modifyStartBitsOnGrow(sig2, 8))
payload.removeAll()
// starting from this payload
// 0 0 - - - - - - - - - - - - - -
assert.NoError(payload.verifyAndInsert(sig0, 0))
// should get this one after growing sig0 by 6
// 0 0 0 0 0 0 - - - - - - - - - -
assert.NoError(payload.modifyStartBitsOnGrow(sig0, 4))
// should get the same as before because grow by 0 has no effect
assert.NoError(payload.modifyStartBitsOnGrow(sig0, 0))
// should get an error because cannot grow by a negative amount
assert.Error(payload.modifyStartBitsOnGrow(sig0, -1))
}
func Test_signalPayload_shiftLeft(t *testing.T) {
assert := assert.New(t)
payload := newSignalPayload(16)
size4Type, err := NewIntegerSignalType("4_bits", 4, false)
assert.NoError(err)
sig0, err := NewStandardSignal("sig_0", size4Type)
assert.NoError(err)
sig1, err := NewStandardSignal("sig_1", size4Type)
assert.NoError(err)
// starting from this payload
// - - 0 0 0 0 1 1 1 1 - - - - - -
assert.NoError(payload.verifyAndInsert(sig0, 2))
assert.NoError(payload.verifyAndInsert(sig1, 6))
// should get this one after shifting sig0 by 2
// 0 0 0 0 - - 1 1 1 1 - - - - - -
// and should get 2 as result
assert.Equal(2, payload.shiftLeft(sig0.EntityID(), 2))
expectedStartBits := []int{0, 6}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
// should get this one after shifting sig1 by 4
// 0 0 0 0 1 1 1 1 - - - - - - - -
// and should get 2 as result
assert.Equal(2, payload.shiftLeft(sig1.EntityID(), 4))
expectedStartBits = []int{0, 4}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
payload.removeAll()
// starting from this payload
// - - 0 0 0 0 1 1 1 1 - - - - - -
assert.NoError(payload.verifyAndInsert(sig0, 2))
assert.NoError(payload.verifyAndInsert(sig1, 6))
// should get this one after shifting sig0 by 4
// 0 0 0 0 - - 1 1 1 1 - - - - - -
// and should get 2 as result
assert.Equal(2, payload.shiftLeft(sig0.EntityID(), 4))
expectedStartBits = []int{0, 6}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
// should get 0 as result
assert.Equal(0, payload.shiftLeft(sig1.EntityID(), 0))
payload.removeAll()
// starting from this payload
// - - - - - - - - - - - - 0 0 0 0
assert.NoError(payload.verifyAndInsert(sig0, 12))
// should get this one after shifting sig0 by 4
// - - - - - - - - 0 0 0 0 - - - -
// and should get 4 as result
assert.Equal(4, payload.shiftLeft(sig0.EntityID(), 4))
assert.Equal(8, payload.signals[0].GetStartBit())
}
func Test_signalPayload_shiftRight(t *testing.T) {
assert := assert.New(t)
payload := newSignalPayload(16)
size4Type, err := NewIntegerSignalType("4_bits", 4, false)
assert.NoError(err)
sig0, err := NewStandardSignal("sig_0", size4Type)
assert.NoError(err)
sig1, err := NewStandardSignal("sig_1", size4Type)
assert.NoError(err)
// starting from this payload
// - - - - - - 0 0 0 0 1 1 1 1 - -
assert.NoError(payload.verifyAndInsert(sig0, 6))
assert.NoError(payload.verifyAndInsert(sig1, 10))
// should get this one after shifting sig1 by 2
// - - - - - - 0 0 0 0 - - 1 1 1 1
// and should get 2 as result
assert.Equal(2, payload.shiftRight(sig1.EntityID(), 2))
expectedStartBits := []int{6, 12}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
// should get this one after shifting sig0 by 4
// - - - - - - - - 0 0 0 0 1 1 1 1
// and should get 2 as result
assert.Equal(2, payload.shiftRight(sig0.EntityID(), 4))
expectedStartBits = []int{8, 12}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
payload.removeAll()
// starting from this payload
// - - - - - - 0 0 0 0 1 1 1 1 - -
assert.NoError(payload.verifyAndInsert(sig0, 6))
assert.NoError(payload.verifyAndInsert(sig1, 10))
// should get this one after shifting sig1 by 4
// - - - - - - 0 0 0 0 - - 1 1 1 1
// and should get 2 as result
assert.Equal(2, payload.shiftRight(sig1.EntityID(), 4))
expectedStartBits = []int{6, 12}
for idx, sig := range payload.signals {
assert.Equal(expectedStartBits[idx], sig.GetStartBit())
}
// should get 0 as result
assert.Equal(0, payload.shiftRight(sig1.EntityID(), 0))
payload.removeAll()
// starting from this payload
// 0 0 0 0 - - - - - - - - - - - -
assert.NoError(payload.verifyAndInsert(sig0, 0))
// should get this one after shifting sig0 by 4
// - - - - 0 0 0 0 - - - - - - - -
// and should get 4 as result
assert.Equal(4, payload.shiftRight(sig0.EntityID(), 4))
assert.Equal(4, payload.signals[0].GetStartBit())
}