add another test for 'daw' motion

test/normal-delete.sml

@@ -4443,25 +4443,81 @@ struct
     ]
 
   val dawDelete = describe "delete motion 'daw' (delete around word)"
-    [test "deletes a single newline when cursor is on a newline" (fn _ =>
-       let
-         (* arrange *)
-         val originalString = "hello\n\nworld\n"
-         val app = TestUtils.init originalString
-         val app = AppWith.idx (app, 6)
+    [ test "deletes a single newline when cursor is on a newline" (fn _ =>
+        let
+          (* arrange *)
+          val originalString = "hello\n\nworld\n"
+          val app = TestUtils.init originalString
+          val app = AppWith.idx (app, 6)
 
-         (* act *)
-         val {buffer, cursorIdx, ...} = TestUtils.updateMany (app, "daw")
+          (* act *)
+          val {buffer, cursorIdx, ...} = TestUtils.updateMany (app, "daw")
 
-         (* assert *)
-         val expectedString = "hello\nworld\n"
-         val actualString = LineGap.toString buffer
+          (* assert *)
+          val expectedString = "hello\nworld\n"
+          val actualString = LineGap.toString buffer
 
-         val expectedCursorIdx = 6
-       in
-         Expect.isTrue
-           (actualString = expectedString andalso cursorIdx = expectedCursorIdx)
-       end)]
+          val expectedCursorIdx = 6
+        in
+          Expect.isTrue
+            (actualString = expectedString andalso cursorIdx = expectedCursorIdx)
+        end)
+    , test
+        "deletes middle word and spaces after middle word \
+        \when there are three words on line and cursor is on middle word"
+        (fn _ =>
+           let
+             (* arrange *)
+             val originalString = "hello world again\n"
+             val app = TestUtils.init originalString
+
+             val app1 = AppWith.idx (app, 6)
+             val app2 = AppWith.idx (app, 7)
+             val app3 = AppWith.idx (app, 8)
+             val app4 = AppWith.idx (app, 9)
+             val app5 = AppWith.idx (app, 10)
+
+             (* act *)
+             val app1 = TestUtils.updateMany (app1, "daw")
+             val app2 = TestUtils.updateMany (app2, "daw")
+             val app3 = TestUtils.updateMany (app3, "daw")
+             val app4 = TestUtils.updateMany (app4, "daw")
+             val app5 = TestUtils.updateMany (app5, "daw")
+
+             (* assert *)
+             val expectedString = "hello again\n"
+
+             val actualString1 = LineGap.toString (#buffer app1)
+             val actualString2 = LineGap.toString (#buffer app2)
+             val actualString3 = LineGap.toString (#buffer app3)
+             val actualString4 = LineGap.toString (#buffer app4)
+             val actualString5 = LineGap.toString (#buffer app5)
+
+             val stringsAreExpected =
+               expectedString = actualString1
+               andalso expectedString = actualString2
+               andalso expectedString = actualString3
+               andalso expectedString = actualString4
+               andalso expectedString = actualString5
+
+             val expectedCursorIdx = 6
+
+             val actualCursor1 = #cursorIdx app1
+             val actualCursor2 = #cursorIdx app2
+             val actualCursor3 = #cursorIdx app3
+             val actualCursor4 = #cursorIdx app4
+             val actualCursor5 = #cursorIdx app5
+
+             val cursorsAreExpected =
+               expectedCursorIdx = actualCursor1
+               andalso expectedCursorIdx = actualCursor2
+               andalso expectedCursorIdx = actualCursor3
+               andalso expectedCursorIdx = actualCursor4
+               andalso expectedCursorIdx = actualCursor5
+           in
+             Expect.isTrue (stringsAreExpected andalso cursorsAreExpected)
+           end)
+    ]
 
   val tests =
     [ dhDelete