multi-touch: add tests for gesturerange moudle

frontend/ui/gesturerange.lua

@@ -39,6 +39,7 @@ function GestureRange:match(gs)
             return false
         end
     end
+
     if self.rate then
         -- This filed restraints the upper limit rate(matches per second).
         -- It's most useful for e-ink devices with less powerfull CPUs and

spec/unit/gesturerange_spec.lua

@@ -0,0 +1,39 @@
+require("commonrequire")
+
+local GestureRange = require("ui/gesturerange")
+local Geom = require("ui/geometry")
+
+describe("gesturerange module", function()
+    it("should match tap event within range", function()
+        local g = GestureRange:new{
+            ges = "tap",
+            range = Geom:new{ x = 0, y = 0, w = 200, h = 200},
+        }
+        assert.truthy(g:match({
+            ges = "tap",
+            pos = Geom:new{ x = 1, y = 1, w = 0, h = 0 },
+        }))
+    end)
+
+    it("should not match tap event outside of range", function()
+        local g = GestureRange:new{
+            ges = "tap",
+            range = Geom:new{ x = 0, y = 0, w = 100, h = 100},
+        }
+        assert.falsy(g:match({
+            ges = "tap",
+            pos = Geom:new{ x = 105, y = 1, w = 0, h = 0 },
+        }))
+    end)
+
+    it("should match any event within nil range", function()
+        local g = GestureRange:new{
+            ges = "tap",
+            range = nil,
+        }
+        assert.truthy(g:match({
+            ges = "tap",
+            pos = Geom:new{ x = 1, y = 1, w = 1000000000000000000, h = 100 },
+        }))
+    end)
+end)