desktopTest.androidx.compose.ui.text.ParagraphStyleTest.kt Maven / Gradle / Ivy
/*
* 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
import androidx.compose.ui.text.style.Hyphens
import androidx.compose.ui.text.style.LineBreak
import androidx.compose.ui.text.style.LineHeightStyle
import androidx.compose.ui.text.style.LineHeightStyle.Trim
import androidx.compose.ui.text.style.LineHeightStyle.Alignment
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.text.style.TextDirection
import androidx.compose.ui.text.style.TextIndent
import androidx.compose.ui.text.style.lerp
import androidx.compose.ui.unit.TextUnit
import androidx.compose.ui.unit.lerp
import androidx.compose.ui.unit.sp
import com.google.common.truth.Truth.assertThat
import org.junit.Test
import org.junit.runner.RunWith
import org.junit.runners.JUnit4
@RunWith(JUnit4::class)
class ParagraphStyleTest {
@Test(expected = IllegalStateException::class)
fun `negative lineHeight throws IllegalStateException`() {
ParagraphStyle(lineHeight = (-1).sp)
}
@Test
fun `merge textAlign uses other's textAlign`() {
val style = ParagraphStyle(textAlign = TextAlign.Justify)
val otherStyle = ParagraphStyle(textAlign = TextAlign.Right)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.textAlign).isEqualTo(otherStyle.textAlign)
}
@Test
fun `merge textAlign other null, return original`() {
val style = ParagraphStyle(textAlign = TextAlign.Justify)
val otherStyle = ParagraphStyle(textAlign = null)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.textAlign).isEqualTo(style.textAlign)
}
@Test
fun `merge textAlign both null returns null`() {
val style = ParagraphStyle(textAlign = null)
val otherStyle = ParagraphStyle(textAlign = null)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.textAlign).isNull()
}
@Test
fun `merge textDirection uses other's textDirection`() {
val style = ParagraphStyle(textDirection = TextDirection.Rtl)
val otherStyle = ParagraphStyle(textDirection = TextDirection.Ltr)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.textDirection).isEqualTo(
otherStyle.textDirection
)
}
@Test
fun `merge textDirection other null, returns original`() {
val style = ParagraphStyle(textDirection = TextDirection.Rtl)
val otherStyle = ParagraphStyle(textDirection = null)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.textDirection).isEqualTo(style.textDirection)
}
@Test
fun `merge textDirection both null returns null`() {
val style = ParagraphStyle(textDirection = null)
val otherStyle = ParagraphStyle(textDirection = null)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.textDirection).isNull()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge non-null hyphens uses other's hyphens`() {
val style = ParagraphStyle(hyphens = Hyphens.Auto)
val otherStyle = ParagraphStyle(hyphens = Hyphens.None)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.hyphens).isEqualTo(otherStyle.hyphens)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge hyphens other null, returns original`() {
val style = ParagraphStyle(hyphens = Hyphens.Auto)
val otherStyle = ParagraphStyle(hyphens = null)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.hyphens).isEqualTo(style.hyphens)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge null hyphens other non-null, returns other's hyphens`() {
val style = ParagraphStyle(hyphens = null)
val otherStyle = ParagraphStyle(hyphens = Hyphens.Auto)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.hyphens).isEqualTo(otherStyle.hyphens)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge hyphens both null returns null`() {
val style = ParagraphStyle(hyphens = null)
val otherStyle = ParagraphStyle(hyphens = null)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.hyphens).isNull()
}
@Test
fun `merge lineHeight uses other's lineHeight`() {
val style = ParagraphStyle(lineHeight = 12.sp)
val otherStyle = ParagraphStyle(lineHeight = 20.sp)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.lineHeight).isEqualTo(otherStyle.lineHeight)
}
@Test
fun `merge lineHeight other unspecified, return original`() {
val style = ParagraphStyle(lineHeight = 12.sp)
val otherStyle = ParagraphStyle(lineHeight = TextUnit.Unspecified)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.lineHeight).isEqualTo(style.lineHeight)
}
@Test
fun `merge lineHeight both unspecified returns unspecified`() {
val style = ParagraphStyle(lineHeight = TextUnit.Unspecified)
val otherStyle = ParagraphStyle(lineHeight = TextUnit.Unspecified)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.lineHeight).isEqualTo(TextUnit.Unspecified)
}
@Test
fun `merge textIndent uses other's textIndent`() {
val style = ParagraphStyle(textIndent = TextIndent(firstLine = 12.sp))
val otherStyle = ParagraphStyle(textIndent = TextIndent(firstLine = 20.sp))
val newStyle = style.merge(otherStyle)
assertThat(newStyle.textIndent).isEqualTo(otherStyle.textIndent)
}
@Test
fun `merge textIndent other null, return original`() {
val style = ParagraphStyle(textIndent = TextIndent(firstLine = 12.sp))
val otherStyle = ParagraphStyle(textIndent = null)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.textIndent).isEqualTo(style.textIndent)
}
@Test
fun `merge textIndent both null returns null`() {
val style = ParagraphStyle(textIndent = null)
val otherStyle = ParagraphStyle(textIndent = null)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.textIndent).isNull()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge null with non-null lineBreak uses other's lineBreak`() {
val style = ParagraphStyle(lineBreak = null)
val otherStyle = ParagraphStyle(lineBreak = LineBreak.Heading)
val mergedStyle = style.merge(otherStyle)
assertThat(mergedStyle.lineBreak).isEqualTo(otherStyle.lineBreak)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge non-null with null lineBreak returns original's lineBreak`() {
val style = ParagraphStyle(lineBreak = LineBreak.Paragraph)
val otherStyle = ParagraphStyle(lineBreak = null)
val mergedStyle = style.merge(otherStyle)
assertThat(mergedStyle.lineBreak).isEqualTo(style.lineBreak)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge null with null lineBreak returns null`() {
val style = ParagraphStyle(lineBreak = null)
val otherStyle = ParagraphStyle(lineBreak = null)
val mergedStyle = style.merge(otherStyle)
assertThat(mergedStyle.lineBreak).isEqualTo(null)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge non-null with non-null lineBreak returns other's lineBreak`() {
val style = ParagraphStyle(lineBreak = LineBreak.Paragraph)
val otherStyle = ParagraphStyle(lineBreak = LineBreak.Heading)
val mergedStyle = style.merge(otherStyle)
assertThat(mergedStyle.lineBreak).isEqualTo(otherStyle.lineBreak)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge null platformStyles`() {
val style1 = ParagraphStyle(platformStyle = null)
val style2 = ParagraphStyle(platformStyle = null)
assertThat(style1.merge(style2).platformStyle).isNull()
}
@Test
fun `plus operator merges`() {
val style = ParagraphStyle(
textAlign = TextAlign.Center,
textDirection = TextDirection.Rtl
) + ParagraphStyle(
textAlign = TextAlign.Justify,
lineHeight = 12.sp
)
assertThat(style).isEqualTo(
ParagraphStyle(
textAlign = TextAlign.Justify, // overridden by RHS
textDirection = TextDirection.Rtl, // from LHS,
lineHeight = 12.sp // from RHS
)
)
}
@Test
fun `lerp textAlign with a null, b not null and t is smaller than half`() {
val style1 = ParagraphStyle(textAlign = null)
val style2 = ParagraphStyle(textAlign = TextAlign.Right)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.4f)
assertThat(newStyle.textAlign).isNull()
}
@Test
fun `lerp textAlign with a and b are not Null and t is smaller than half`() {
val style1 = ParagraphStyle(textAlign = TextAlign.Left)
val style2 = ParagraphStyle(textAlign = TextAlign.Right)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.4f)
assertThat(newStyle.textAlign).isEqualTo(style1.textAlign)
}
@Test
fun `lerp textAlign with a and b are not Null and t is larger than half`() {
val style1 = ParagraphStyle(textAlign = TextAlign.Left)
val style2 = ParagraphStyle(textAlign = TextAlign.Right)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.6f)
assertThat(newStyle.textAlign).isEqualTo(style2.textAlign)
}
@Test
fun `lerp textDirection with a null, b not null and t is smaller than half`() {
val style1 = ParagraphStyle(textDirection = null)
val style2 = ParagraphStyle(textDirection = TextDirection.Rtl)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.4f)
assertThat(newStyle.textDirection).isNull()
}
@Test
fun `lerp textDirection with a and b are not Null and t is smaller than half`() {
val style1 = ParagraphStyle(textDirection = TextDirection.Ltr)
val style2 = ParagraphStyle(textDirection = TextDirection.Rtl)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.4f)
assertThat(newStyle.textDirection).isEqualTo(style1.textDirection)
}
@Test
fun `lerp textDirection with a and b are not Null and t is larger than half`() {
val style1 = ParagraphStyle(textDirection = TextDirection.Ltr)
val style2 = ParagraphStyle(textDirection = TextDirection.Rtl)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.6f)
assertThat(newStyle.textDirection).isEqualTo(style2.textDirection)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp hyphens with a null, b not null and t is smaller than half`() {
val style1 = ParagraphStyle(hyphens = null)
val style2 = ParagraphStyle(hyphens = Hyphens.Auto)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.4f)
assertThat(newStyle.hyphens).isNull()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp hyphens with a null, b not null and t is equal to half`() {
val style1 = ParagraphStyle(hyphens = null)
val style2 = ParagraphStyle(hyphens = Hyphens.Auto)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.5f)
assertThat(newStyle.hyphens).isEqualTo(style2.hyphens)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp hyphens with a and b are not null and t is smaller than half`() {
val style1 = ParagraphStyle(hyphens = Hyphens.Auto)
val style2 = ParagraphStyle(hyphens = Hyphens.None)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.4f)
assertThat(newStyle.hyphens).isEqualTo(style1.hyphens)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp hyphens with a and b are not Null and t is larger than half`() {
val style1 = ParagraphStyle(hyphens = Hyphens.Auto)
val style2 = ParagraphStyle(hyphens = Hyphens.None)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.6f)
assertThat(newStyle.hyphens).isEqualTo(style2.hyphens)
}
@Test
fun `lerp textIndent with a null, b not null and t is smaller than half returns null`() {
val style1 = ParagraphStyle(textIndent = null)
val style2 = ParagraphStyle(textIndent = TextIndent(firstLine = 20.sp))
val fraction = 0.4f
val newStyle = lerp(start = style1, stop = style2, fraction = fraction)
assertThat(newStyle.textIndent).isEqualTo(
lerp(TextIndent(), style2.textIndent!!, fraction)
)
}
@Test
fun `lerp textIndent with a and b are not Null`() {
val style1 = ParagraphStyle(textIndent = TextIndent(firstLine = 10.sp))
val style2 = ParagraphStyle(textIndent = TextIndent(firstLine = 20.sp))
val fraction = 0.6f
val newStyle = lerp(start = style1, stop = style2, fraction = fraction)
assertThat(newStyle.textIndent).isEqualTo(
lerp(style1.textIndent!!, style2.textIndent!!, fraction)
)
}
@Test
fun `lerp lineHeight with a and b are specified`() {
val style1 = ParagraphStyle(lineHeight = 10.sp)
val style2 = ParagraphStyle(lineHeight = 20.sp)
val fraction = 0.4f
val newStyle = lerp(start = style1, stop = style2, fraction = fraction)
assertThat(newStyle.lineHeight).isEqualTo(
lerp(style1.lineHeight, style2.lineHeight, fraction)
)
}
@Test
fun `lerp lineHeight with a and b are unspecified`() {
val style1 = ParagraphStyle(lineHeight = TextUnit.Unspecified)
val style2 = ParagraphStyle(lineHeight = TextUnit.Unspecified)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.4f)
assertThat(newStyle.lineHeight).isEqualTo(TextUnit.Unspecified)
}
@Test
fun `lerp lineHeight with either a or b is unspecified`() {
val style1 = ParagraphStyle(lineHeight = TextUnit.Unspecified)
val style2 = ParagraphStyle(lineHeight = 22.sp)
val newStyle = lerp(start = style1, stop = style2, fraction = 0.4f)
val anotherNewStyle = lerp(start = style1, stop = style2, fraction = 0.8f)
assertThat(newStyle.lineHeight).isEqualTo(TextUnit.Unspecified)
assertThat(anotherNewStyle.lineHeight).isEqualTo(22.sp)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp with null platformStyles has null platformStyle`() {
val style = ParagraphStyle(platformStyle = null)
val otherStyle = ParagraphStyle(platformStyle = null)
val lerpedStyle = lerp(start = style, stop = otherStyle, fraction = 0.5f)
assertThat(lerpedStyle.platformStyle).isNull()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp with null lineHeightStyles has null lineHeightStyle`() {
val style = ParagraphStyle(lineHeightStyle = null)
val otherStyle = ParagraphStyle(lineHeightStyle = null)
val lerpedStyle = lerp(start = style, stop = otherStyle, fraction = 0.5f)
assertThat(lerpedStyle.lineHeightStyle).isNull()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp with non-null start, null end, closer to start has non-null lineHeightStyle`() {
val style = ParagraphStyle(lineHeightStyle = LineHeightStyle.Default)
val otherStyle = ParagraphStyle(lineHeightStyle = null)
val lerpedStyle = lerp(start = style, stop = otherStyle, fraction = 0.4f)
assertThat(lerpedStyle.lineHeightStyle).isSameInstanceAs(style.lineHeightStyle)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp with non-null start, null end, closer to end has null lineHeightStyle`() {
val style = ParagraphStyle(lineHeightStyle = LineHeightStyle.Default)
val otherStyle = ParagraphStyle(lineHeightStyle = null)
val lerpedStyle = lerp(start = style, stop = otherStyle, fraction = 0.6f)
assertThat(lerpedStyle.lineHeightStyle).isNull()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp with null start, non-null end, closer to start has null lineHeightStyle`() {
val style = ParagraphStyle(lineHeightStyle = null)
val otherStyle = ParagraphStyle(lineHeightStyle = LineHeightStyle.Default)
val lerpedStyle = lerp(start = style, stop = otherStyle, fraction = 0.4f)
assertThat(lerpedStyle.lineHeightStyle).isNull()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp with null start, non-null end, closer to end has non-null lineHeightStyle`() {
val style = ParagraphStyle(lineHeightStyle = null)
val otherStyle = ParagraphStyle(lineHeightStyle = LineHeightStyle.Default)
val lerpedStyle = lerp(start = style, stop = otherStyle, fraction = 0.6f)
assertThat(lerpedStyle.lineHeightStyle).isSameInstanceAs(otherStyle.lineHeightStyle)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp with non-null start, null end, closer to start has non-null lineBreak`() {
val style = ParagraphStyle(lineBreak = LineBreak.Heading)
val otherStyle = ParagraphStyle(lineHeightStyle = null)
val lerpedStyle = lerp(start = style, stop = otherStyle, fraction = 0.4f)
assertThat(lerpedStyle.lineBreak).isSameInstanceAs(style.lineBreak)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp with non-null start, null end, closer to end has null lineBreak`() {
val style = ParagraphStyle(lineBreak = LineBreak.Heading)
val otherStyle = ParagraphStyle(lineHeightStyle = null)
val lerpedStyle = lerp(start = style, stop = otherStyle, fraction = 0.6f)
assertThat(lerpedStyle.lineBreak).isNull()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp with null start, non-null end, closer to start has null lineBreak`() {
val style = ParagraphStyle(lineHeightStyle = null)
val otherStyle = ParagraphStyle(lineBreak = LineBreak.Heading)
val lerpedStyle = lerp(start = style, stop = otherStyle, fraction = 0.4f)
assertThat(lerpedStyle.lineBreak).isNull()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `lerp with null start, non-null end, closer to end has non-null lineBreak`() {
val style = ParagraphStyle(lineBreak = null)
val otherStyle = ParagraphStyle(lineBreak = LineBreak.Heading)
val lerpedStyle = lerp(start = style, stop = otherStyle, fraction = 0.6f)
assertThat(lerpedStyle.lineBreak).isSameInstanceAs(otherStyle.lineBreak)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `equals return false for different line height behavior`() {
val style = ParagraphStyle(lineHeightStyle = null)
val otherStyle = ParagraphStyle(lineHeightStyle = LineHeightStyle.Default)
assertThat(style == otherStyle).isFalse()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `equals return true for same line height behavior`() {
val style = ParagraphStyle(lineHeightStyle = LineHeightStyle.Default)
val otherStyle = ParagraphStyle(lineHeightStyle = LineHeightStyle.Default)
assertThat(style == otherStyle).isTrue()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `hashCode is same for same line height behavior`() {
val style = ParagraphStyle(lineHeightStyle = LineHeightStyle.Default)
val otherStyle = ParagraphStyle(lineHeightStyle = LineHeightStyle.Default)
assertThat(style.hashCode()).isEqualTo(otherStyle.hashCode())
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `hashCode is different for different line height behavior`() {
val style = ParagraphStyle(
lineHeightStyle = LineHeightStyle(
alignment = Alignment.Bottom,
trim = Trim.None
)
)
val otherStyle = ParagraphStyle(
lineHeightStyle = LineHeightStyle(
alignment = Alignment.Center,
trim = Trim.Both
)
)
assertThat(style.hashCode()).isNotEqualTo(otherStyle.hashCode())
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `copy with lineHeightStyle returns new lineHeightStyle`() {
val style = ParagraphStyle(
lineHeightStyle = LineHeightStyle(
alignment = Alignment.Bottom,
trim = Trim.None
)
)
val newLineHeightStyle = LineHeightStyle(
alignment = Alignment.Center,
trim = Trim.Both
)
val newStyle = style.copy(lineHeightStyle = newLineHeightStyle)
assertThat(newStyle.lineHeightStyle).isEqualTo(newLineHeightStyle)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `copy without lineHeightStyle uses existing lineHeightStyle`() {
val style = ParagraphStyle(
lineHeightStyle = LineHeightStyle(
alignment = Alignment.Bottom,
trim = Trim.Both
)
)
val newStyle = style.copy()
assertThat(newStyle.lineHeightStyle).isEqualTo(style.lineHeightStyle)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `copy with hyphens returns new hyphens`() {
val style = ParagraphStyle(hyphens = Hyphens.None)
val newStyle = style.copy(hyphens = Hyphens.Auto)
assertThat(newStyle.hyphens).isEqualTo(Hyphens.Auto)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `copy without hyphens uses existing hyphens`() {
val style = ParagraphStyle(hyphens = Hyphens.Auto)
val newStyle = style.copy()
assertThat(newStyle.hyphens).isEqualTo(style.hyphens)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `equals return false for different and non-null hyphens behavior`() {
val style = ParagraphStyle(hyphens = Hyphens.None)
val otherStyle = ParagraphStyle(hyphens = Hyphens.Auto)
assertThat(style == otherStyle).isFalse()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `equals return false for null and non-null hyphens`() {
val style = ParagraphStyle(hyphens = null)
val otherStyle = ParagraphStyle(hyphens = Hyphens.Auto)
assertThat(style == otherStyle).isFalse()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `equals return true for same and non-null hyphens behavior`() {
val style = ParagraphStyle(hyphens = Hyphens.Auto)
val otherStyle = ParagraphStyle(hyphens = Hyphens.Auto)
assertThat(style == otherStyle).isTrue()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `equals return true for both null hyphens`() {
val style = ParagraphStyle(hyphens = null)
val otherStyle = ParagraphStyle(hyphens = null)
assertThat(style == otherStyle).isTrue()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `hashCode is same for same hyphens behavior`() {
val style = ParagraphStyle(hyphens = Hyphens.Auto)
val otherStyle = ParagraphStyle(hyphens = Hyphens.Auto)
assertThat(style.hashCode()).isEqualTo(otherStyle.hashCode())
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `hashCode is different for different hyphens behavior`() {
val style = ParagraphStyle(hyphens = Hyphens.None)
val otherStyle = ParagraphStyle(hyphens = Hyphens.Auto)
assertThat(style.hashCode()).isNotEqualTo(otherStyle.hashCode())
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge with null lineHeightStyle uses other's lineHeightStyle`() {
val style = ParagraphStyle(lineHeightStyle = null)
val otherStyle = ParagraphStyle(lineHeightStyle = LineHeightStyle.Default)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.lineHeightStyle).isEqualTo(otherStyle.lineHeightStyle)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge with non-null lineHeightStyle, returns original`() {
val style = ParagraphStyle(lineHeightStyle = LineHeightStyle.Default)
val otherStyle = ParagraphStyle(lineHeightStyle = null)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.lineHeightStyle).isEqualTo(style.lineHeightStyle)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge with both null lineHeightStyle returns null`() {
val style = ParagraphStyle(lineHeightStyle = null)
val otherStyle = ParagraphStyle(lineHeightStyle = null)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.lineHeightStyle).isNull()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `merge with both non-null lineHeightStyle returns other's lineHeightStyle`() {
val style = ParagraphStyle(
lineHeightStyle = LineHeightStyle(
alignment = Alignment.Center,
trim = Trim.None
)
)
val otherStyle = ParagraphStyle(
lineHeightStyle = LineHeightStyle(
alignment = Alignment.Bottom,
trim = Trim.Both
)
)
val newStyle = style.merge(otherStyle)
assertThat(newStyle.lineHeightStyle).isEqualTo(otherStyle.lineHeightStyle)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `constructor without lineHeightStyle sets lineHeightStyle to null`() {
val style = ParagraphStyle(textAlign = TextAlign.Start)
assertThat(style.lineHeightStyle).isNull()
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `copy with lineBreak returns new lineBreak`() {
val style = ParagraphStyle(lineBreak = LineBreak.Paragraph)
val newStyle = style.copy(lineBreak = LineBreak.Heading)
assertThat(newStyle.lineBreak).isEqualTo(LineBreak.Heading)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `copy without lineBreak uses existing lineBreak`() {
val style = ParagraphStyle(lineBreak = LineBreak.Paragraph)
val newStyle = style.copy()
assertThat(newStyle.lineBreak).isEqualTo(style.lineBreak)
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `hashCode is same for same lineBreak`() {
val style = ParagraphStyle(lineBreak = LineBreak.Paragraph)
val otherStyle = ParagraphStyle(lineBreak = LineBreak.Paragraph)
assertThat(style.hashCode()).isEqualTo(otherStyle.hashCode())
}
@OptIn(ExperimentalTextApi::class)
@Test
fun `hashCode is different for different lineBreak`() {
val style = ParagraphStyle(lineBreak = LineBreak.Paragraph)
val otherStyle = ParagraphStyle(lineBreak = LineBreak.Heading)
assertThat(style.hashCode()).isNotEqualTo(otherStyle.hashCode())
}
}
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