feat(backthink): 后台自主思考（heartbeat+事件触发 + 打扰决策 fail-closed + 主动推送活跃→IM 兜底 + 限制 + 思考记录）

internal/services/backthink/decide_test.go

@@ -0,0 +1,139 @@
+package backthink
+
+import (
+	"testing"
+	"time"
+)
+
+// dayAt returns a mid-afternoon time in UTC (outside the quiet-hours window).
+func dayAt() time.Time { return time.Date(2026, 9, 6, 14, 0, 0, 0, time.UTC) }
+
+// nightAt returns a 02:00 time in UTC (inside the default 23-7 quiet window).
+func nightAt() time.Time { return time.Date(2026, 9, 6, 2, 0, 0, 0, time.UTC) }
+
+// testBackthink builds a Backthink with a normalized empty Config so Decide uses
+// the default quiet-hours window (23:00-07:00).
+func testBackthink() *Backthink {
+	return &Backthink{cfg: normalize(Config{})}
+}
+
+func TestDecide_DoNotDisturb(t *testing.T) {
+	t.Parallel()
+	b := testBackthink()
+	cases := []struct {
+		name string
+		in   DecisionInput
+		want bool
+	}{
+		{
+			name: "凌晨+睡眠_不打扰",
+			in:   DecisionInput{Trigger: "iot.device_update", Import: ImportanceNormal, At: nightAt(), UserState: UserState{Sleeping: true}},
+			want: false,
+		},
+		{
+			name: "睡眠_重要也不打扰",
+			in:   DecisionInput{Trigger: "reminder.trigger", Import: ImportanceHigh, At: dayAt(), UserState: UserState{Sleeping: true}},
+			want: false,
+		},
+		{
+			name: "上班_不打扰",
+			in:   DecisionInput{Trigger: "iot.device_update", Import: ImportanceNormal, At: dayAt(), UserState: UserState{Working: true}},
+			want: false,
+		},
+		{
+			name: "忙碌_普通_不打扰",
+			in:   DecisionInput{Trigger: "iot.device_update", Import: ImportanceNormal, At: dayAt(), UserState: UserState{Busy: true}},
+			want: false,
+		},
+		{
+			name: "安静时段_普通_不打扰",
+			in:   DecisionInput{Trigger: "iot.device_update", Import: ImportanceNormal, At: nightAt(), UserState: UserState{Boredom: 0.9}},
+			want: false,
+		},
+		{
+			name: "白天_普通_不无聊_不打扰",
+			in:   DecisionInput{Trigger: "iot.device_update", Import: ImportanceNormal, At: dayAt(), UserState: UserState{}},
+			want: false,
+		},
+		{
+			name: "白天_低重要_不打扰",
+			in:   DecisionInput{Trigger: "heartbeat", Import: ImportanceLow, At: dayAt(), UserState: UserState{}},
+			want: false,
+		},
+	}
+	for _, tc := range cases {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+			got := b.Decide(tc.in)
+			if got.ShouldPush != tc.want {
+				t.Fatalf("Decide(%+v).ShouldPush = %v, want %v (reason %q)", tc.in, got.ShouldPush, tc.want, got.Reason)
+			}
+		})
+	}
+}
+
+func TestDecide_ShouldPush(t *testing.T) {
+	t.Parallel()
+	b := testBackthink()
+	cases := []struct {
+		name string
+		in   DecisionInput
+	}{
+		{
+			name: "白天+重要_推",
+			in:   DecisionInput{Trigger: "reminder.trigger", Import: ImportanceHigh, At: dayAt(), UserState: UserState{}},
+		},
+		{
+			name: "白天+危急_推",
+			in:   DecisionInput{Trigger: "system.event", Import: ImportanceCritical, At: dayAt(), UserState: UserState{}},
+		},
+		{
+			name: "白天+普通+无聊_推",
+			in:   DecisionInput{Trigger: "iot.device_update", Import: ImportanceNormal, At: dayAt(), UserState: UserState{Boredom: 0.8}},
+		},
+		{
+			name: "安静时段+重要_推",
+			in:   DecisionInput{Trigger: "reminder.trigger", Import: ImportanceHigh, At: nightAt(), UserState: UserState{}},
+		},
+		{
+			name: "危急_可打断忙碌_推",
+			in:   DecisionInput{Trigger: "system.event", Import: ImportanceCritical, At: dayAt(), UserState: UserState{Working: true}},
+		},
+	}
+	for _, tc := range cases {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+			got := b.Decide(tc.in)
+			if !got.ShouldPush {
+				t.Fatalf("Decide(%+v).ShouldPush = false, want true (reason %q)", tc.in, got.Reason)
+			}
+		})
+	}
+}
+
+func TestInQuietHours(t *testing.T) {
+	t.Parallel()
+	b := &Backthink{cfg: Config{QuietStartHour: 23, QuietEndHour: 7}}
+	cases := []struct {
+		name string
+		at   time.Time
+		want bool
+	}{
+		{name: "午夜", at: time.Date(2026, 9, 6, 0, 0, 0, 0, time.UTC), want: true},
+		{name: "凌晨两点", at: nightAt(), want: true},
+		{name: "早上七点_偏出", at: time.Date(2026, 9, 6, 7, 0, 0, 0, time.UTC), want: false},
+		{name: "傍晚", at: time.Date(2026, 9, 6, 18, 30, 0, 0, time.UTC), want: false},
+		{name: "深夜十一点", at: time.Date(2026, 9, 6, 23, 0, 0, 0, time.UTC), want: true},
+	}
+	for _, tc := range cases {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+			if got := b.inQuietHours(tc.at); got != tc.want {
+				t.Fatalf("inQuietHours(%v) = %v, want %v", tc.at, got, tc.want)
+			}
+		})
+	}
+}