add tests for 'dE' motion
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@@ -1575,6 +1575,240 @@ struct
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end)
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]
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val dEdelete = describe "delete motion 'dE'"
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[ test
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"deletes last char and moves cursor back by one \
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\when used on last char of last word in buffer \
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\and buffer ends with a newline preceded by a non-newline"
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(fn _ =>
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let
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(* arrange *)
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val originalString = "hello world\n"
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val originalIdx = String.size originalString - 2
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val app = TestUtils.init originalString
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val app = AppWith.idx (app, originalIdx)
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(* act *)
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val {buffer, cursorIdx, ...} = TestUtils.updateMany (app, "dE")
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(* assert *)
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val expectedString = "hello worl\n"
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val actualString = LineGap.toString buffer
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val expectedIdx = String.size expectedString - 2
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in
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Expect.isTrue
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(expectedString = actualString andalso expectedIdx = cursorIdx)
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end)
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, test "deletes second word as expected when there are three words" (fn _ =>
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let
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(* arrange *)
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(* "world" is spelled with an ! instead of an l
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* to make the second word fit the definition of a WORD *)
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val originalString = "hello wor!d again\n"
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val app = TestUtils.init originalString
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(* all the different positions the cursor can be
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* on the second word *)
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val app1 = AppWith.idx (app, 6)
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val app2 = AppWith.idx (app, 7)
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val app3 = AppWith.idx (app, 8)
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val app4 = AppWith.idx (app, 9)
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val app5 = AppWith.idx (app, 10)
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(* act *)
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val newApp1 = TestUtils.updateMany (app1, "dE")
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val newApp2 = TestUtils.updateMany (app2, "dE")
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val newApp3 = TestUtils.updateMany (app3, "dE")
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val newApp4 = TestUtils.updateMany (app4, "dE")
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val newApp5 = TestUtils.updateMany (app5, "dE")
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(* assert *)
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val expectedString1 = "hello again\n"
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val expectedString2 = "hello w again\n"
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val expectedString3 = "hello wo again\n"
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val expectedString4 = "hello wor again\n"
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val expectedString5 = "hello wor!\n"
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val actualString1 = LineGap.toString (#buffer newApp1)
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val actualString2 = LineGap.toString (#buffer newApp2)
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val actualString3 = LineGap.toString (#buffer newApp3)
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val actualString4 = LineGap.toString (#buffer newApp4)
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val actualString5 = LineGap.toString (#buffer newApp5)
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val stringsAreExpected =
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expectedString1 = actualString1
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andalso expectedString2 = actualString2
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andalso expectedString3 = actualString3
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andalso expectedString4 = actualString4
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andalso expectedString5 = actualString5
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val expectedCursor1 = 6
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val expectedCursor2 = 7
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val expectedCursor3 = 8
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val expectedCursor4 = 9
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val expectedCursor5 = 9
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val actualCursor1 = #cursorIdx newApp1
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val actualCursor2 = #cursorIdx newApp2
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val actualCursor3 = #cursorIdx newApp3
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val actualCursor4 = #cursorIdx newApp4
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val actualCursor5 = #cursorIdx newApp5
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val cursorsAreExpected =
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expectedCursor1 = actualCursor1
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andalso expectedCursor2 = actualCursor2
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andalso expectedCursor3 = actualCursor3
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andalso expectedCursor4 = actualCursor4
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andalso expectedCursor5 = actualCursor5
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in
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Expect.isTrue (stringsAreExpected andalso cursorsAreExpected)
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end)
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, test
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"deletes from cursor until newline when on last word \
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\before a newline and another word follows that newline"
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(fn _ =>
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let
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(* arrange *)
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val originalString = "hello\nworld\nagain\n"
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val app = TestUtils.init originalString
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val app = AppWith.idx (app, 1)
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(* act *)
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val {buffer, cursorIdx, ...} = TestUtils.updateMany (app, "dE")
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(* assert *)
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val expectedString = "h\nworld\nagain\n"
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(* moves cursor back by one when next char is newline *)
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val expectedCursor = 0
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val actualString = LineGap.toString buffer
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val stringIsExpected = expectedString = actualString
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val cursorIsExpected = expectedCursor = cursorIdx
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in
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Expect.isTrue (stringIsExpected andalso cursorIsExpected)
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end)
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, test
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"deletes beyond first punctuation char when on an alpha char \
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\and there is no space between alpha and punctuation"
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(fn _ =>
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let
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(* arrange *)
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val originalString = "hello!world again\n"
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val app = TestUtils.init originalString
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(* act *)
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val {buffer, cursorIdx, ...} = TestUtils.updateMany (app, "dE")
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(* assert *)
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val expectedString = " again\n"
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val expectedCursor = 0
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val actualString = LineGap.toString buffer
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val stringIsExpected = expectedString = actualString
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val cursorIsExpected = expectedCursor = cursorIdx
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in
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Expect.isTrue (stringIsExpected andalso cursorIsExpected)
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end)
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, test
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"deletes beyond first alpha char when on punctuation \
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\and there is no space between punctuation and alpha"
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(fn _ =>
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let
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(* arrange *)
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val originalString = "!#%&QWERTY#!\n"
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val app = TestUtils.init originalString
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(* act *)
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val {buffer, cursorIdx, ...} = TestUtils.updateMany (app, "dE")
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(* assert *)
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val expectedString = "\n"
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val expectedCursor = 0
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val actualString = LineGap.toString buffer
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val stringIsExpected = expectedString = actualString
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val cursorIsExpected = expectedCursor = cursorIdx
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in
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Expect.isTrue (stringIsExpected andalso cursorIsExpected)
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end)
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, test
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"deletes end of next word \
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\when cursor is on space and next char is alpha"
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(fn _ =>
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let
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(* arrange *)
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val originalString = "h e!!o world\n"
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val app = TestUtils.init originalString
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val app = AppWith.idx (app, 1)
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(* act *)
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val {buffer, cursorIdx, ...} = TestUtils.updateMany (app, "dE")
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(* assert *)
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val expectedString = "h world\n"
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val actualString = LineGap.toString buffer
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val expectedCursor = 1
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val stringIsExpected = expectedString = actualString
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val cursorIsExpected = expectedCursor = cursorIdx
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in
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Expect.isTrue (stringIsExpected andalso cursorIsExpected)
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end)
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, test
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"deletes next world \
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\when cursor is on space, many spaces are ahead, \
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\and first char after spaces is alpha"
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(fn _ =>
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let
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(* arrange *)
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val originalString = "h e!!o world\n"
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val app = TestUtils.init originalString
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val app = AppWith.idx (app, 3)
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(* act *)
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val {buffer, cursorIdx, ...} = TestUtils.updateMany (app, "dE")
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(* assert *)
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val expectedString = "h world\n"
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val actualString = LineGap.toString buffer
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val expectedCursor = 3
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val stringIsExpected = expectedString = actualString
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val cursorIsExpected = expectedCursor = cursorIdx
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in
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Expect.isTrue (stringIsExpected andalso cursorIsExpected)
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end)
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, test
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"deletes next word \
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\when cursor is on space and next non-space char is punctuation"
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(fn _ =>
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let
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(* arrange *)
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val originalString = "! @#$% world\n"
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val app = TestUtils.init originalString
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val app = AppWith.idx (app, 2)
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(* act *)
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val {buffer, cursorIdx, ...} = TestUtils.updateMany (app, "dE")
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(* assert *)
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val expectedString = "! world\n"
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val actualString = LineGap.toString buffer
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val expectedCursor = 2
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val stringIsExpected = expectedString = actualString
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val cursorIsExpected = expectedCursor = cursorIdx
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in
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Expect.isTrue (stringIsExpected andalso cursorIsExpected)
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end)
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]
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val tests =
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[ dhDelete
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, dlDelete
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@@ -1584,5 +1818,6 @@ struct
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, dwDelete
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, dWDelete
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, deDelete
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, dEdelete
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]
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end
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