refactor kstate, add stub user syncing function

matrix/kstate.test.js

@@ -0,0 +1,94 @@
+const {kstateToState, stateToKState, diffKState, kstateStripConditionals} = require("./kstate")
+const {test} = require("supertape")
+
+test("kstate strip: strips false conditions", t => {
+   t.deepEqual(kstateStripConditionals({
+      a: {$if: false, value: 2},
+      b: {value: 4}
+   }), {
+      b: {value: 4}
+   })
+})
+
+test("kstate strip: keeps true conditions while removing $if", t => {
+   t.deepEqual(kstateStripConditionals({
+      a: {$if: true, value: 2},
+      b: {value: 4}
+   }), {
+      a: {value: 2},
+      b: {value: 4}
+   })
+})
+
+test("kstate2state: general", t => {
+	t.deepEqual(kstateToState({
+		"m.room.name/": {name: "test name"},
+		"m.room.member/@cadence:cadence.moe": {membership: "join"}
+	}), [
+		{
+			type: "m.room.name",
+			state_key: "",
+			content: {
+				name: "test name"
+			}
+		},
+		{
+			type: "m.room.member",
+			state_key: "@cadence:cadence.moe",
+			content: {
+				membership: "join"
+			}
+		}
+	])
+})
+
+test("state2kstate: general", t => {
+	t.deepEqual(stateToKState([
+		{
+			type: "m.room.name",
+			state_key: "",
+			content: {
+				name: "test name"
+			}
+		},
+		{
+			type: "m.room.member",
+			state_key: "@cadence:cadence.moe",
+			content: {
+				membership: "join"
+			}
+		}
+	]), {
+		"m.room.name/": {name: "test name"},
+		"m.room.member/@cadence:cadence.moe": {membership: "join"}
+	})
+})
+
+test("diffKState: detects edits", t => {
+	t.deepEqual(
+		diffKState({
+			"m.room.name/": {name: "test name"},
+			"same/": {a: 2}
+		}, {
+			"m.room.name/": {name: "edited name"},
+			"same/": {a: 2}
+		}),
+		{
+			"m.room.name/": {name: "edited name"}
+		}
+	)
+})
+
+test("diffKState: detects new properties", t => {
+	t.deepEqual(
+		diffKState({
+			"m.room.name/": {name: "test name"},
+		}, {
+			"m.room.name/": {name: "test name"},
+			"new/": {a: 2}
+		}),
+		{
+			"new/": {a: 2}
+		}
+	)
+})