SpannableStringTest.kt revision d8fad98b94940d1a1657bb44366f3305bbcc7203 
1/*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *       http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package androidx.text
18
19import android.graphics.Typeface.BOLD
20import android.text.SpannableString
21import android.text.style.StyleSpan
22import android.text.style.UnderlineSpan
23import org.junit.Assert.assertEquals
24import org.junit.Assert.assertTrue
25import org.junit.Test
26
27class SpannableStringTest {
28
29    @Test fun toSpannableString() = assertTrue("Hello, World".toSpannable() is SpannableString)
30
31    @Test fun plusAssign() {
32        val s = "Hello, World".toSpannable()
33        assertTrue(s.getSpans<Any>().isEmpty())
34        s += StyleSpan(BOLD)
35        assertTrue(s.getSpans<Any>().isNotEmpty())
36    }
37
38    @Test fun minusAssign() {
39        val s = "Hello, World".toSpannable()
40        val bold = StyleSpan(BOLD)
41        s += bold
42        assertTrue(s.getSpans<Any>().isNotEmpty())
43        s -= bold
44        assertTrue(s.getSpans<Any>().isEmpty())
45    }
46
47    @Test fun clearSpans() {
48        val s = "Hello, World".toSpannable()
49        s += StyleSpan(BOLD)
50        s += UnderlineSpan()
51        assertTrue(s.getSpans<Any>().isNotEmpty())
52        s.clearSpans()
53        assertTrue(s.getSpans<Any>().isEmpty())
54    }
55
56    @Test fun setIndices() {
57        val s = "Hello, World".toSpannable()
58        s[0, 5] = StyleSpan(BOLD)
59        s[7, 12] = UnderlineSpan()
60
61        val spans = s.getSpans<Any>()
62
63        val bold = spans.filterIsInstance<StyleSpan>().single()
64        assertEquals(0, s.getSpanStart(bold))
65        assertEquals(5, s.getSpanEnd(bold))
66
67        val underline = spans.filterIsInstance<UnderlineSpan>().single()
68        assertEquals(7, s.getSpanStart(underline))
69        assertEquals(12, s.getSpanEnd(underline))
70    }
71
72    @Test fun setRange() {
73        val s = "Hello, World".toSpannable()
74        s[0..5] = StyleSpan(BOLD)
75        s[7..12] = UnderlineSpan()
76
77        val spans = s.getSpans<Any>()
78
79        val bold = spans.filterIsInstance<StyleSpan>().single()
80        assertEquals(0, s.getSpanStart(bold))
81        assertEquals(5, s.getSpanEnd(bold))
82
83        val underline = spans.filterIsInstance<UnderlineSpan>().single()
84        assertEquals(7, s.getSpanStart(underline))
85        assertEquals(12, s.getSpanEnd(underline))
86    }
87}
88