Byte-snake-engine/constrictor_test.go
Torben d378759d58
DEV-1096 - add a new "pipeline" concept (#67)
* add a new "pipeline" concept

- added new Pipeline type which is a series of stages
- added a global registry to facilitate plugin architecture
- 100% test coverage

* Refactor rulesets to provide and use Pipeline

* fix copypasta comments

* fix lint for unused method

* include game over stages in ruleset pipelines

* clean up unused private standard methods

* remove unused private methods in squad ruleset

* remove unused private methods in royale ruleset

* refactor: pipeline clone + return next board state

* YAGNI: remove unused Append

* refactor: improve stage names

* add no-op behavior to stages for initial state

* refactor: no-op decision within stage functions

* remove misleading comment that isn't true

* dont bother checking for init in gameover stages

* remove redundant test

* refactor: provide a combined ruleset/pipeline type

* fix: movement no-op for GameOver check

IsGameOver needs to run pipeline, move snakes needs to no-op for that

* add test coverage

* refactor: improve stage names and use constants

* add Error method

Support error checking before calling Execute()

* update naming to be American style

* panic when overwriting stages in global registry

* rename "Error" method and improve docs

* use testify lib for panic assertion

* remove redundant food stage

* use ruleset-specific logic for game over checks

* re-work Pipeline errors

* rework errors again

* add defensive check for zero length snake

* use old logic which checks current state, not next

* add warning about how PipelineRuleset checks for game over
2022-04-19 15:52:57 -07:00

117 lines
2.9 KiB
Go

package rules
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestConstrictorRulesetInterface(t *testing.T) {
var _ Ruleset = (*ConstrictorRuleset)(nil)
}
func TestConstrictorModifyInitialBoardState(t *testing.T) {
tests := []struct {
Height int32
Width int32
IDs []string
}{
{1, 1, []string{}},
{1, 1, []string{"one"}},
{2, 2, []string{"one"}},
{2, 2, []string{"one", "two"}},
{11, 1, []string{"one", "two"}},
{11, 11, []string{}},
{11, 11, []string{"one", "two", "three", "four", "five"}},
}
r := ConstrictorRuleset{}
for testNum, test := range tests {
state, err := CreateDefaultBoardState(test.Width, test.Height, test.IDs)
require.NoError(t, err)
require.NotNil(t, state)
state, err = r.ModifyInitialBoardState(state)
require.NoError(t, err)
require.NotNil(t, state)
require.Equal(t, test.Width, state.Width)
require.Equal(t, test.Height, state.Height)
require.Len(t, state.Food, 0, testNum)
// Verify snakes
require.Equal(t, len(test.IDs), len(state.Snakes))
for i, id := range test.IDs {
require.Equal(t, id, state.Snakes[i].ID)
require.Equal(t, state.Snakes[i].Body[2], state.Snakes[i].Body[1])
}
}
}
// Test that two equal snakes collide and both get eliminated
// also checks:
// - food removed
// - health back to max
var constrictorMoveAndCollideMAD = gameTestCase{
"Constrictor Case Move and Collide",
&BoardState{
Width: 10,
Height: 10,
Snakes: []Snake{
{
ID: "one",
Body: []Point{{1, 1}, {2, 1}},
Health: 99,
},
{
ID: "two",
Body: []Point{{1, 2}, {2, 2}},
Health: 99,
},
},
Food: []Point{{10, 10}, {9, 9}, {8, 8}},
Hazards: []Point{},
},
[]SnakeMove{
{ID: "one", Move: MoveUp},
{ID: "two", Move: MoveDown},
},
nil,
&BoardState{
Width: 10,
Height: 10,
Snakes: []Snake{
{
ID: "one",
Body: []Point{{1, 2}, {1, 1}, {1, 1}},
Health: 100,
EliminatedCause: EliminatedByCollision,
EliminatedBy: "two",
},
{
ID: "two",
Body: []Point{{1, 1}, {1, 2}, {1, 2}},
Health: 100,
EliminatedCause: EliminatedByCollision,
EliminatedBy: "one",
},
},
Food: []Point{},
Hazards: []Point{},
},
}
func TestConstrictorCreateNextBoardState(t *testing.T) {
cases := []gameTestCase{
standardCaseErrNoMoveFound,
standardCaseErrZeroLengthSnake,
constrictorMoveAndCollideMAD,
}
rb := NewRulesetBuilder().WithParams(map[string]string{
ParamGameType: GameTypeConstrictor,
})
r := ConstrictorRuleset{}
for _, gc := range cases {
gc.requireValidNextState(t, &r)
// also test a RulesBuilder constructed instance
gc.requireValidNextState(t, rb.Ruleset())
// also test a pipeline with the same settings
gc.requireValidNextState(t, rb.PipelineRuleset(GameTypeConstrictor, NewPipeline(constrictorRulesetStages...)))
}
}