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Commit 19e75a6a authored by Seigo Nonaka's avatar Seigo Nonaka
Browse files

Add test cases for Layout.primaryIsTrailingPrevious 

Bug: 78464361
Test: atest FrameworksCoreTests:android.text.LayoutTest
Change-Id: Id2735e993849bced47f9b361c99e13f91fe88070
parent 8ee93af8

core/java/android/text/Layout.java

+3 −1
Original line number Original line Diff line number Diff line
@@ -1004,7 +1004,9 @@ public abstract class Layout { 
        return TextUtils.packRangeInLong(0, getLineEnd(line));

        return TextUtils.packRangeInLong(0, getLineEnd(line));

    }

    }





    private boolean primaryIsTrailingPrevious(int offset) {

    /** @hide */

    @VisibleForTesting

    public boolean primaryIsTrailingPrevious(int offset) {

        int line = getLineForOffset(offset);

        int line = getLineForOffset(offset);

        int lineStart = getLineStart(line);

        int lineStart = getLineStart(line);

        int lineEnd = getLineEnd(line);

        int lineEnd = getLineEnd(line);

core/tests/coretests/src/android/text/LayoutTest.java

+55 −0
Original line number Original line Diff line number Diff line
@@ -16,6 +16,7 @@ 




package android.text;

package android.text;





import static org.junit.Assert.assertArrayEquals;

import static org.junit.Assert.assertEquals;

import static org.junit.Assert.assertEquals;

import static org.junit.Assert.assertFalse;

import static org.junit.Assert.assertFalse;

import static org.junit.Assert.assertNull;

import static org.junit.Assert.assertNull;
@@ -688,5 +689,59 @@ public class LayoutTest { 
            return mDrawCommands;

            return mDrawCommands;

        }

        }

    }

    }



    private static final String LTR = "a";

    private static final String RTL = "\u05D0";  // HEBREW LETTER ALEF

    private static final String LTR_SP = "\uD801\uDCB0";  // OSAGE CAPITAL LETTER A

    private static final String RTL_SP = "\uD83A\uDD00";  // ADLAM CAPITAL LETTER ALIF



    private static final String LRI = "\u2066";  // LEFT-TO-RIGHT ISOLATE

    private static final String RLI = "\u2067";  // RIGHT-TO-LEFT ISOLATE

    private static final String PDI = "\u2069";  // POP DIRECTIONAL ISOLATE



    private static void assertPrimaryIsTrailingPrevious(String input, boolean[] expected) {

        assertEquals(input.length() + 1, expected.length);



        boolean[] actual = new boolean[expected.length];

        TextPaint paint = new TextPaint();

        paint.setTextSize(16.0f);

        Layout layout = StaticLayout.Builder.obtain(

                input, 0, input.length(), paint, Integer.MAX_VALUE).build();

        for (int i = 0; i <= input.length(); ++i) {

            actual[i] = layout.primaryIsTrailingPrevious(i);

        }

        assertArrayEquals(expected, actual);

    }



    @Test

    public void testPrimaryIsTrailingPrevious() {

        assertPrimaryIsTrailingPrevious(

                LTR + " " + LTR + LTR + " " + LTR + LTR + LTR,

                new boolean[]{false, false, false, false, false, false, false, false, false});

        assertPrimaryIsTrailingPrevious(

                RTL + " " + RTL + RTL + " " + RTL + RTL + RTL,

                new boolean[]{false, false, false, false, false, false, false, false, false});

        assertPrimaryIsTrailingPrevious(

                LTR + RTL + LTR + RTL + LTR,

                new boolean[]{false, true, false, true, false, false});

        assertPrimaryIsTrailingPrevious(

                RTL + LTR + RTL + LTR + RTL,

                new boolean[]{false, true, false, true, false, false});

        assertPrimaryIsTrailingPrevious(

                RTL_SP + LTR_SP + RTL_SP + LTR_SP + RTL_SP,

                new boolean[]{

                        false, false, true, false, false, false, true, false, false, false, false});

        assertPrimaryIsTrailingPrevious(

                LTR_SP + RTL_SP + LTR_SP + RTL_SP + LTR_SP,

                new boolean[]{

                        false, false, true, false, false, false, true, false, false, false, false});

        assertPrimaryIsTrailingPrevious(

                LTR + RLI + LTR + RTL + PDI + LTR,

                new boolean[]{false, false, true, false, false, false, false});

        assertPrimaryIsTrailingPrevious(

                RTL + LRI + RTL + LTR + PDI + RTL,

                new boolean[]{false, false, true, false, false, false, false});



    }

}

}