| /* |
| * Copyright 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package androidx.compose.ui.text.input |
| |
| import androidx.test.filters.SmallTest |
| import androidx.compose.ui.text.TextRange |
| import org.junit.Assert.assertEquals |
| import org.junit.Assert.assertFalse |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import org.junit.runners.JUnit4 |
| |
| @SmallTest |
| @RunWith(JUnit4::class) |
| class DeleteSurroundingTextInCodePointsEditOpTest { |
| val CH1 = "\uD83D\uDE00" // U+1F600 |
| val CH2 = "\uD83D\uDE01" // U+1F601 |
| val CH3 = "\uD83D\uDE02" // U+1F602 |
| val CH4 = "\uD83D\uDE03" // U+1F603 |
| val CH5 = "\uD83D\uDE04" // U+1F604 |
| |
| @Test |
| fun test_delete_after() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(2)) |
| |
| DeleteSurroundingTextInCodePointsEditOp(0, 1).process(eb) |
| |
| assertEquals("$CH1$CH3$CH4$CH5", eb.toString()) |
| assertEquals(2, eb.cursor) |
| assertFalse(eb.hasComposition()) |
| } |
| |
| @Test |
| fun test_delete_before() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(2)) |
| |
| DeleteSurroundingTextInCodePointsEditOp(1, 0).process(eb) |
| |
| assertEquals("$CH2$CH3$CH4$CH5", eb.toString()) |
| assertEquals(0, eb.cursor) |
| assertFalse(eb.hasComposition()) |
| } |
| |
| @Test |
| fun test_delete_both() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| DeleteSurroundingTextInCodePointsEditOp(1, 1).process(eb) |
| |
| assertEquals("$CH1$CH2$CH5", eb.toString()) |
| assertEquals(4, eb.cursor) |
| assertFalse(eb.hasComposition()) |
| } |
| |
| @Test |
| fun test_delete_after_multiple() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(4)) |
| |
| DeleteSurroundingTextInCodePointsEditOp(0, 2).process(eb) |
| |
| assertEquals("$CH1$CH2$CH5", eb.toString()) |
| assertEquals(4, eb.cursor) |
| assertFalse(eb.hasComposition()) |
| } |
| |
| @Test |
| fun test_delete_before_multiple() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| DeleteSurroundingTextInCodePointsEditOp(2, 0).process(eb) |
| |
| assertEquals("$CH1$CH4$CH5", eb.toString()) |
| assertEquals(2, eb.cursor) |
| assertFalse(eb.hasComposition()) |
| } |
| |
| @Test |
| fun test_delete_both_multiple() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| DeleteSurroundingTextInCodePointsEditOp(2, 2).process(eb) |
| |
| assertEquals("$CH1", eb.toString()) |
| assertEquals(2, eb.cursor) |
| assertFalse(eb.hasComposition()) |
| } |
| |
| @Test |
| fun test_delete_selection_preserve() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(4, 8)) |
| |
| DeleteSurroundingTextInCodePointsEditOp(1, 1).process(eb) |
| |
| assertEquals("$CH1$CH3$CH4", eb.toString()) |
| assertEquals(2, eb.selectionStart) |
| assertEquals(6, eb.selectionEnd) |
| assertFalse(eb.hasComposition()) |
| } |
| |
| @Test |
| fun test_delete_before_too_many() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| DeleteSurroundingTextInCodePointsEditOp(1000, 0).process(eb) |
| |
| assertEquals("$CH4$CH5", eb.toString()) |
| assertEquals(0, eb.cursor) |
| assertFalse(eb.hasComposition()) |
| } |
| |
| @Test |
| fun test_delete_after_too_many() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| DeleteSurroundingTextInCodePointsEditOp(0, 1000).process(eb) |
| |
| assertEquals("$CH1$CH2$CH3", eb.toString()) |
| assertEquals(6, eb.cursor) |
| assertFalse(eb.hasComposition()) |
| } |
| |
| @Test |
| fun test_delete_both_too_many() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| DeleteSurroundingTextInCodePointsEditOp(1000, 1000).process(eb) |
| |
| assertEquals("", eb.toString()) |
| assertEquals(0, eb.cursor) |
| assertFalse(eb.hasComposition()) |
| } |
| |
| @Test |
| fun test_delete_composition_no_intersection_preceding_composition() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| eb.setComposition(0, 2) |
| |
| DeleteSurroundingTextInCodePointsEditOp(1, 1).process(eb) |
| |
| assertEquals("$CH1$CH2$CH5", eb.toString()) |
| assertEquals(4, eb.cursor) |
| assertEquals(0, eb.compositionStart) |
| assertEquals(2, eb.compositionEnd) |
| } |
| |
| @Test |
| fun test_delete_composition_no_intersection_trailing_composition() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| eb.setComposition(8, 10) |
| |
| DeleteSurroundingTextInCodePointsEditOp(1, 1).process(eb) |
| |
| assertEquals("$CH1$CH2$CH5", eb.toString()) |
| assertEquals(4, eb.cursor) |
| assertEquals(4, eb.compositionStart) |
| assertEquals(6, eb.compositionEnd) |
| } |
| |
| @Test |
| fun test_delete_composition_intersection_preceding_composition() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| eb.setComposition(0, 6) |
| |
| DeleteSurroundingTextInCodePointsEditOp(1, 1).process(eb) |
| |
| assertEquals("$CH1$CH2$CH5", eb.toString()) |
| assertEquals(4, eb.cursor) |
| assertEquals(0, eb.compositionStart) |
| assertEquals(4, eb.compositionEnd) |
| } |
| |
| @Test |
| fun test_delete_composition_intersection_trailing_composition() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| eb.setComposition(6, 10) |
| |
| DeleteSurroundingTextInCodePointsEditOp(1, 1).process(eb) |
| |
| assertEquals("$CH1$CH2$CH5", eb.toString()) |
| assertEquals(4, eb.cursor) |
| assertEquals(4, eb.compositionStart) |
| assertEquals(6, eb.compositionEnd) |
| } |
| |
| @Test |
| fun test_delete_covered_composition() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| eb.setComposition(4, 6) |
| |
| DeleteSurroundingTextInCodePointsEditOp(1, 1).process(eb) |
| |
| assertEquals("$CH1$CH2$CH5", eb.toString()) |
| assertEquals(4, eb.cursor) |
| assertFalse(eb.hasComposition()) |
| } |
| |
| @Test |
| fun test_delete_composition_covered() { |
| val eb = EditingBuffer("$CH1$CH2$CH3$CH4$CH5", TextRange(6)) |
| |
| eb.setComposition(0, 10) |
| |
| DeleteSurroundingTextInCodePointsEditOp(1, 1).process(eb) |
| |
| assertEquals("$CH1$CH2$CH5", eb.toString()) |
| assertEquals(4, eb.cursor) |
| assertEquals(0, eb.compositionStart) |
| assertEquals(6, eb.compositionEnd) |
| } |
| } |