tests: add tests for states.go

Added tests for: StateGroup, State

states_test.go

@@ -0,0 +1,202 @@
+package fsm
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/vitaliy-ukiru/fsm-telebot/v2/internal/container"
+)
+
+func TestStateGroup_MatchState(t *testing.T) {
+
+	tests := []struct {
+		name string
+		sg   StateGroup
+		arg  State
+		want bool
+	}{
+		{
+			name: "success",
+			sg:   NewStateGroup("test", "state1", "state2"),
+			arg:  "test:state1",
+			want: true,
+		},
+		{
+			name: "not contains",
+			sg:   NewStateGroup("test", "state1"),
+			arg:  "state1", // state must don't match, because it not have prefix
+			want: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equalf(t, tt.want, tt.sg.MatchState(tt.arg), "MatchState(%v)", tt.arg)
+		})
+	}
+}
+
+func TestStateGroup_New(t *testing.T) {
+	type fields struct {
+		prefix string
+		group  *container.LinkedHashSet[State]
+	}
+	type args struct {
+		name string
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		args   args
+		want   State
+	}{
+		{
+			name: "add prefix",
+			fields: fields{
+				prefix: "test",
+				group:  container.NewLinkedHashSet[State](),
+			},
+			args: args{
+				name: "add",
+			},
+			want: "test:add",
+		},
+		{
+			name: "don't add prefix",
+			fields: fields{
+				prefix: "test",
+				group:  container.NewLinkedHashSet[State](),
+			},
+			args: args{
+				name: "test:add",
+			},
+			want: "test:add",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			sg := StateGroup{
+				prefix: tt.fields.prefix,
+				group:  tt.fields.group,
+			}
+			assert.Equalf(t, tt.want, sg.New(tt.args.name), "New(%v)", tt.args.name)
+		})
+	}
+}
+
+func TestStateGroup_Next(t *testing.T) {
+	tests := []struct {
+		name string
+		sg   StateGroup
+		arg  State
+		want State
+	}{
+		{
+			name: "empty group",
+			sg:   NewStateGroup("test"),
+			arg:  "test:my_state",
+			want: DefaultState,
+		},
+		{
+			name: "normal behavior",
+			sg:   NewStateGroup("test", "a", "b", "c"),
+			arg:  "test:b",
+			want: "test:c",
+		},
+		{
+			name: "unknown state",
+			sg:   NewStateGroup("test", "a", "b"),
+			arg:  "test:c",
+			want: DefaultState,
+		},
+		{
+			name: "last state",
+			sg:   NewStateGroup("test", "a", "b"),
+			arg:  "test:b",
+			want: DefaultState,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equalf(t, tt.want, tt.sg.Next(tt.arg), "Next(%v)", tt.arg)
+		})
+	}
+}
+
+func TestStateGroup_Prev(t *testing.T) {
+
+	tests := []struct {
+		name string
+		sg   StateGroup
+		arg  State
+		want State
+	}{
+		{
+			name: "empty group",
+			sg:   NewStateGroup("test"),
+			arg:  "test:my_state",
+			want: DefaultState,
+		},
+		{
+			name: "normal behavior",
+			sg:   NewStateGroup("test", "a", "b", "c"),
+			arg:  "test:b",
+			want: "test:a",
+		},
+		{
+			name: "unknown state",
+			sg:   NewStateGroup("test", "a", "b"),
+			arg:  "test:c",
+			want: DefaultState,
+		},
+		{
+			name: "first state",
+			sg:   NewStateGroup("test", "a", "b"),
+			arg:  "test:a",
+			want: DefaultState,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equalf(t, tt.want, tt.sg.Prev(tt.arg), "Prev(%v)", tt.arg)
+		})
+	}
+}
+
+func TestState_MatchState(t *testing.T) {
+	tests := []struct {
+		name  string
+		state State
+		other State
+		want  bool
+	}{
+		{
+			name:  "same state",
+			state: "a",
+			other: "a",
+			want:  true,
+		},
+		{
+			name:  "different state",
+			state: "a",
+			other: "b",
+			want:  false,
+		},
+		{
+			name:  "state is Any",
+			state: AnyState,
+			other: "test",
+			want:  true,
+		},
+		{
+			name:  "other is Any",
+			state: "test",
+			other: AnyState,
+			want:  true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equalf(t, tt.want, tt.state.MatchState(tt.other), "MatchState(%v)", tt.other)
+		})
+	}
+}