Method testCombining

tests/java/TextLineTest.java:108–152

()

   }

   public void testCombining() {
        // u   U+0075  LATIN SMALL LETTER U
        // ̈    U+0308  COMBINING DIAERESIS
        // a   U+0061  LATIN SMALL LETTER A
        // ̧    U+0327  COMBINING CEDILLA
        try (TextLine line = TextLine.make("üa̧", inter36);) {
            assertArrayEquals(new short[] {898 /* ü */, 503 /* a */, 1664 /* ̧  */}, line.getGlyphs());
            assertArrayEquals(new int[] {0, 2, 4}, TextLine._nGetBreakOffsets(line._ptr));
            assertArrayEquals(new float[] {0, 21, 41}, TextLine._nGetBreakPositions(line._ptr));
 
            pushStack("getOffsetAtCoord");
            assertEquals(0, line.getOffsetAtCoord(0f));
            assertEquals(0, line.getOffsetAtCoord(10f));
            assertEquals(2, line.getOffsetAtCoord(12f));
            assertEquals(2, line.getOffsetAtCoord(21f));
            assertEquals(2, line.getOffsetAtCoord(30f));
            assertEquals(4, line.getOffsetAtCoord(32f));
            assertEquals(4, line.getOffsetAtCoord(41f));
            popStack();

            pushStack("getCoordAtOffset");
            assertClose(0, line.getCoordAtOffset(0));
            assertClose(0, line.getCoordAtOffset(1));
            assertClose(21, line.getCoordAtOffset(2));
            assertClose(41, line.getCoordAtOffset(3));
            assertClose(41, line.getCoordAtOffset(4));
            popStack();
        }

        // a    U+0061  LATIN SMALL LETTER A
        // ̆     U+0306  COMBINING BREVE
        try (TextLine line = TextLine.make("ă", jbMono36);) {
            // JetBrains Mono supports “a” and “ă” but not “ ̆ ” separately
            // assertArrayEquals(new short[] {226 /* ă */}, line.getGlyphs()); // FIXME #106
        }

        // a   U+0061  LATIN SMALL LETTER A
        // a   U+0061  LATIN SMALL LETTER A
        // ̧    U+0327  COMBINING CEDILLA
        try (TextLine line = TextLine.make("aa̧", jbMono36);) {
            // JetBrains Mono supports “a” but not “ ̧ ”
            // Second grapheme cluster should fall back together, second “a” should resolve to different glyph
            assertNotEquals(line.getGlyphs()[0], line.getGlyphs()[1]);
        }
   }

   public void testEmoji() {
        try (TextLine misc = TextLine.make("☺", firaCode36);    // U+263A, in Fira Code