forked from detekt/detekt
/
UnnecessaryPartOfBinaryExpressionSpec.kt
299 lines (252 loc) · 8 KB
/
UnnecessaryPartOfBinaryExpressionSpec.kt
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package io.gitlab.arturbosch.detekt.rules.performance
import io.gitlab.arturbosch.detekt.test.assertThat
import io.gitlab.arturbosch.detekt.test.compileAndLint
import org.junit.jupiter.api.Test
class UnnecessaryPartOfBinaryExpressionSpec {
@Test
fun `Verify if condition with several arguments`() {
val code = """
fun bar() {
val foo = true
val baz = false
if (foo || baz || foo) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1)
}
@Test
fun `No report several arguments with object-foo math operator and bool val`() {
val code = """
class Bar(val bar: Boolean)
fun bar() {
val foo = true
val baz = 10
val bar = Bar(true)
if (baz < 10 || foo || bar.bar || baz > 10) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(0)
}
@Test
fun `Report several arguments with object-foo math operator and bool val`() {
val code = """
class Bar(val bar: Boolean)
fun bar() {
val foo = true
val baz = 10
val bar = Bar(true)
if (baz < 10 || foo || bar.bar || baz > 10 || baz < 10) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1)
}
@Test
fun `Not report error if condition contains different operators`() {
val code = """
fun bar() {
val foo = true
val baz = false
if (foo || baz && foo) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(0)
}
@Test
fun `Not report error if condition contains different operators with other binary expression`() {
val code = """
fun bar() {
val foo = 5
val baz = false
if (foo < 5 || baz && foo > 5) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(0)
}
@Test
fun `Report error if condition contains different operators`() {
val code = """
fun bar() {
val foo = true
val baz = false
if (foo || baz && baz) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1).hasTextLocations("baz && baz")
}
@Test
fun `verify foo or foo detected`() {
val code = """
fun bar() {
val foo = true
if (foo || foo) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1)
}
@Test
fun `verify object-foo or object-foo or object-bar detected`() {
val code = """
class Bar(val bar: Boolean, val baz: Boolean)
fun bar() {
val bar = Bar(true, true)
if (bar.bar || bar.baz || bar.bar) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1)
}
@Test
fun `verify object-foo or object-foo detected`() {
val code = """
class Bar(val bar: Boolean)
fun bar() {
val bar = Bar(true)
if (bar.bar || bar.bar) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1)
}
@Test
fun `verify foo more 5 and foo more 5 detected`() {
val code = """
fun bar() {
val foo = 1
if (foo > 1 && foo > 1) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1)
}
@Test
fun `verify foo more 5 && foo more 5 detected un trim`() {
val code = """
fun bar() {
val foo = 1
if (foo> 1 && foo >1) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1)
}
@Test
fun `verify object-foo && object-foo detected`() {
val code = """
class Bar(val bar: Boolean)
fun bar() {
val bar = Bar(true)
if (bar.bar && bar.bar) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1)
}
@Test
fun `verify foo does not report`() {
val code = """
fun bar() {
val foo = true
if (foo) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(0)
}
@Test
fun `verify more and less if works as expected`() {
val code = """
fun bar() {
val foo = 0
val bar = 1
if (foo > bar || foo > 1) {
//TODO
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(0)
}
@Test
fun `verify into filter function`() {
val code = """
fun bar() {
val list = listOf<Int>()
list.filter { it > 1 || it > 1 }
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1)
}
@Test
fun `verify into when`() {
val code = """
fun bar() {
val foo = true
when {
foo || foo -> {
}
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1)
}
@Test
fun `verify two or into when`() {
val code = """
fun bar() {
val foo = true
val bar = true
when {
foo || bar || foo -> {
}
}
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(1)
}
@Test
fun `Don't raise issues with pair creation`() {
val code = """
fun foo() {
1 to 1
}
""".trimIndent()
val findings = UnnecessaryPartOfBinaryExpression().compileAndLint(code)
assertThat(findings).hasSize(0)
}
}