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RsCompletionTestBase.kt
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RsCompletionTestBase.kt
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/*
* Use of this source code is governed by the MIT license that can be
* found in the LICENSE file.
*/
package org.rust.lang.core.completion
import com.intellij.codeInsight.lookup.LookupElement
import com.intellij.codeInsight.lookup.LookupElementPresentation
import com.intellij.psi.PsiElement
import com.intellij.psi.util.PsiTreeUtil
import org.intellij.lang.annotations.Language
import org.rust.RsTestBase
abstract class RsCompletionTestBase(private val defaultFileName: String = "main.rs") : RsTestBase() {
protected lateinit var completionFixture: RsCompletionTestFixture
override fun setUp() {
super.setUp()
completionFixture = RsCompletionTestFixture(myFixture, defaultFileName)
completionFixture.setUp()
}
override fun tearDown() {
completionFixture.tearDown()
super.tearDown()
}
// Prefer using `doSingleCompletion` instead
@Deprecated(
"Use doSingleCompletion, because it's simpler and checks caret position as well",
replaceWith = ReplaceWith("doSingleCompletion(code, code)")
)
protected fun checkSingleCompletion(target: String, @Language("Rust") code: String) {
InlineFile(code).withCaret()
executeSoloCompletion()
val normName = target
.substringBeforeLast("()")
.substringBeforeLast(" {}")
.substringAfterLast("::")
.substringAfterLast(".")
val shift = when {
target.endsWith("()") || target.endsWith("::") -> 3
target.endsWith(" {}") -> 4
else -> 2
}
val element = myFixture.file.findElementAt(myFixture.caretOffset - shift)!!
val skipTextCheck = normName.isEmpty() || normName.contains(' ')
check((skipTextCheck || element.text == normName) && (element.fitsHierarchically(target) || element.fitsLinearly(target))) {
"Wrong completion, expected `$target`, but got\n${myFixture.file.text}"
}
}
protected fun doFirstCompletion(
@Language("Rust") before: String,
@Language("Rust") after: String
) = completionFixture.doFirstCompletion(before, after)
protected fun doSingleCompletion(
@Language("Rust") before: String,
@Language("Rust") after: String
) = completionFixture.doSingleCompletion(before, after)
protected fun doSingleCompletionByFileTree(
@Language("Rust") before: String,
@Language("Rust") after: String
) = completionFixture.doSingleCompletionByFileTree(before, after)
protected fun doSingleCompletionWithLiveTemplate(
@Language("Rust") before: String,
toType: String,
@Language("Rust") after: String
) = checkByTextWithLiveTemplate(before, after, toType) {
executeSoloCompletion()
}
protected fun checkContainsCompletion(
variant: String,
@Language("Rust") code: String,
render: LookupElement.() -> String = { lookupString }
) = completionFixture.checkContainsCompletion(code, listOf(variant), render)
protected fun checkContainsCompletion(
variants: List<String>,
@Language("Rust") code: String,
render: LookupElement.() -> String = { lookupString }
) = completionFixture.checkContainsCompletion(code, variants, render)
protected fun checkContainsCompletionByFileTree(
variant: String,
@Language("Rust") code: String,
render: LookupElement.() -> String = { lookupString }
) = completionFixture.checkContainsCompletionByFileTree(code, listOf(variant), render)
protected fun checkContainsCompletionByFileTree(
variants: List<String>,
@Language("Rust") code: String,
render: LookupElement.() -> String = { lookupString }
) = completionFixture.checkContainsCompletionByFileTree(code, variants, render)
protected fun checkContainsCompletionPrefixes(
prefixes: List<String>,
@Language("Rust") code: String
) = completionFixture.checkContainsCompletionPrefixes(code, prefixes)
protected fun checkCompletion(
lookupString: String,
@Language("Rust") before: String,
@Language("Rust") after: String,
completionChar: Char = '\n'
) = completionFixture.checkCompletion(lookupString, before, after, completionChar)
fun checkCompletionWithLiveTemplate(
lookupString: String,
@Language("Rust") before: String,
toType: String,
@Language("Rust") after: String
) {
checkByTextWithLiveTemplate(before.trimIndent(), after.trimIndent(), toType) {
val items = myFixture.completeBasic()!!
val lookupItem = items.find {
it.presentation.itemText == lookupString
} ?: error("Lookup string $lookupString not found")
myFixture.lookup.currentItem = lookupItem
myFixture.type('\n')
}
}
protected fun checkNotContainsCompletion(
variant: String,
@Language("Rust") code: String,
render: LookupElement.() -> String = { lookupString }
) = completionFixture.checkNotContainsCompletion(code, setOf(variant), render)
protected fun checkNotContainsCompletion(
variants: Set<String>,
@Language("Rust") code: String,
render: LookupElement.() -> String = { lookupString }
) = completionFixture.checkNotContainsCompletion(code, variants, render)
protected fun checkNotContainsCompletion(
variants: List<String>,
@Language("Rust") code: String,
render: LookupElement.() -> String = { lookupString }
) {
completionFixture.checkNotContainsCompletion(code, variants.toSet(), render)
}
protected open fun checkNoCompletion(@Language("Rust") code: String) = completionFixture.checkNoCompletion(code)
protected fun checkNoCompletionByFileTree(@Language("Rust") code: String) =
completionFixture.checkNoCompletionByFileTree(code)
protected fun executeSoloCompletion() = completionFixture.executeSoloCompletion()
private fun PsiElement.fitsHierarchically(target: String): Boolean = when {
text == target -> true
text.length > target.length -> false
parent != null -> parent.fitsHierarchically(target)
else -> false
}
private fun PsiElement.fitsLinearly(target: String) =
checkLinearly(target, Direction.LEFT) || checkLinearly(target, Direction.RIGHT)
private fun PsiElement.checkLinearly(target: String, direction: Direction): Boolean {
var el = this
var text = ""
while (text.length < target.length) {
text = if (direction == Direction.LEFT) el.text + text else text + el.text
if (text == target) return true
el = (if (direction == Direction.LEFT) PsiTreeUtil.prevVisibleLeaf(el) else PsiTreeUtil.nextVisibleLeaf(el)) ?: break
}
return false
}
private enum class Direction {
LEFT,
RIGHT
}
}
val LookupElement.presentation: LookupElementPresentation
get() = LookupElementPresentation().also { renderElement(it) }