Test cursor movement

model/cursor_test.go

@@ -0,0 +1,115 @@
+package model
+
+import (
+	"testing"
+
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+func TestCursor(t *testing.T) {
+	Convey("Given a cursor", t, func() {
+
+		Convey("When moving cell to cell", func() {
+			m, err := New(4, 4)
+			So(err, ShouldBeNil)
+			So(m.cursor, ShouldEqual, 0)
+
+			Convey("You can move down", func() {
+				m = m.CursorCellDown()
+				So(m.cursor, ShouldEqual, 16)
+			})
+
+			Convey("You can move up", func() {
+				m = m.CursorCellDown()
+				m = m.CursorCellUp()
+				So(m.cursor, ShouldEqual, 0)
+			})
+
+			Convey("You can move right", func() {
+				m = m.CursorCellRight()
+				So(m.cursor, ShouldEqual, 1)
+			})
+
+			Convey("You can move left", func() {
+				m = m.CursorCellRight()
+				m = m.CursorCellLeft()
+				So(m.cursor, ShouldEqual, 0)
+			})
+
+			Convey("You can't move up beyond the top", func() {
+				m = m.CursorCellUp()
+				So(m.cursor, ShouldEqual, 0)
+			})
+
+			Convey("You can't move left beyond the edge", func() {
+				m = m.CursorCellLeft()
+				So(m.cursor, ShouldEqual, 0)
+			})
+
+			bottomRight := (m.size * m.size) - 1
+			m.cursor = bottomRight
+
+			Convey("You can't move down below the bottom", func() {
+				m.cursor = bottomRight
+				m = m.CursorCellDown()
+				So(m.cursor, ShouldEqual, bottomRight)
+			})
+
+			Convey("You can't move right beyond the edge", func() {
+				m.cursor = bottomRight
+				m = m.CursorCellRight()
+				So(m.cursor, ShouldEqual, bottomRight)
+			})
+		})
+
+		Convey("When moving section to section", func() {
+			m, err := New(4, 4)
+			So(err, ShouldBeNil)
+			Convey("You can move down", func() {
+				m = m.CursorSectionDown()
+				So(m.cursor, ShouldEqual, 64)
+			})
+
+			Convey("You can move up", func() {
+				m = m.CursorSectionDown()
+				m = m.CursorSectionUp()
+				So(m.cursor, ShouldEqual, 0)
+			})
+
+			Convey("You can move right", func() {
+				m = m.CursorSectionRight()
+				So(m.cursor, ShouldEqual, 4)
+			})
+
+			Convey("You can move left", func() {
+				m = m.CursorSectionRight()
+				m = m.CursorSectionLeft()
+				So(m.cursor, ShouldEqual, 0)
+			})
+
+			Convey("You can't move up beyond the top", func() {
+				m = m.CursorCellUp()
+				So(m.cursor, ShouldEqual, 0)
+			})
+
+			Convey("You can't move left beyond the edge", func() {
+				m = m.CursorCellLeft()
+				So(m.cursor, ShouldEqual, 0)
+			})
+
+			bottomRight := (m.size * m.size) - 1
+
+			Convey("You can't move down below the bottom", func() {
+				m.cursor = bottomRight
+				m = m.CursorSectionDown()
+				So(m.cursor, ShouldEqual, bottomRight)
+			})
+
+			Convey("You can't move right beyond the edge", func() {
+				m.cursor = bottomRight
+				m = m.CursorSectionRight()
+				So(m.cursor, ShouldEqual, bottomRight)
+			})
+		})
+	})
+}