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Extract some helper methods into a separate class
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src/test/java/org/nixos/idea/lang/references/SymbolTestHelper.java
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| @@ -0,0 +1,146 @@ | ||
| package org.nixos.idea.lang.references; | ||
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| import com.intellij.find.usages.api.SearchTarget; | ||
| import com.intellij.find.usages.api.Usage; | ||
| import com.intellij.find.usages.api.UsageSearchParameters; | ||
| import com.intellij.model.Symbol; | ||
| import com.intellij.model.psi.PsiSymbolDeclaration; | ||
| import com.intellij.model.psi.PsiSymbolReference; | ||
| import com.intellij.model.search.SearchService; | ||
| import com.intellij.navigation.SymbolNavigationService; | ||
| import com.intellij.openapi.application.ReadAction; | ||
| import com.intellij.openapi.project.Project; | ||
| import com.intellij.platform.backend.navigation.NavigationTarget; | ||
| import com.intellij.psi.PsiFile; | ||
| import com.intellij.psi.search.LocalSearchScope; | ||
| import com.intellij.psi.search.SearchScope; | ||
| import com.intellij.psi.util.PsiTreeUtil; | ||
| import com.intellij.psi.util.PsiTreeUtilKt; | ||
| import com.intellij.testFramework.fixtures.CodeInsightTestFixture; | ||
| import org.jetbrains.annotations.NotNull; | ||
| import org.nixos.idea.lang.references.symbol.NixSymbol; | ||
| import org.nixos.idea.lang.references.symbol.NixUserSymbol; | ||
| import org.nixos.idea.psi.NixDeclarationHost; | ||
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| import java.util.ArrayList; | ||
| import java.util.Collection; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
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| import static org.junit.jupiter.api.Assertions.assertInstanceOf; | ||
| import static org.junit.jupiter.api.Assertions.fail; | ||
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| public final class SymbolTestHelper { | ||
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| private final @NotNull CodeInsightTestFixture myFixture; | ||
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| public SymbolTestHelper(@NotNull CodeInsightTestFixture fixture) { | ||
| myFixture = fixture; | ||
| } | ||
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| //region findSymbol | ||
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| public @NotNull NixSymbol findSymbol(@NotNull PsiFile file, @NotNull String name, int offset) { | ||
| return findSymbol(file, List.of(name), offset); | ||
| } | ||
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| public @NotNull NixSymbol findSymbol(@NotNull PsiFile file, @NotNull List<String> path, int offset) { | ||
| NixDeclarationHost host = PsiTreeUtil.findElementOfClassAtOffset(file, offset, NixDeclarationHost.class, false); | ||
| if (host == null) { | ||
| throw new IllegalStateException("No NixDeclarationHost found on given location"); | ||
| } | ||
| NixUserSymbol symbol = host.getSymbol(path); | ||
| return Objects.requireNonNull(symbol, "Symbol not found: " + String.join(".", path)); | ||
| } | ||
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| //endregion | ||
| //region findDeclarations | ||
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| @SuppressWarnings("UnstableApiUsage") | ||
| public <T extends PsiSymbolDeclaration> @NotNull T findDeclaration(@NotNull Class<T> type, @NotNull PsiFile file, int offset) { | ||
| Collection<PsiSymbolDeclaration> declarations = findDeclarations(file, offset); | ||
| List<T> typedDeclarations = declarations.stream() | ||
| .filter(type::isInstance).map(type::cast) | ||
| .toList(); | ||
| if (declarations.isEmpty()) { | ||
| return fail("No declaration found"); | ||
| } else if (typedDeclarations.isEmpty()) { | ||
| return fail(String.format("No declaration of type %s found. Found: %s", type.getSimpleName(), declarations)); | ||
| } else if (typedDeclarations.size() > 1) { | ||
| return fail("Multiple declarations found: " + declarations); | ||
| } else { | ||
| return typedDeclarations.get(0); | ||
| } | ||
| } | ||
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| @SuppressWarnings("UnstableApiUsage") | ||
| public @NotNull Collection<PsiSymbolDeclaration> findDeclarations(@NotNull PsiFile file, int offset) { | ||
| return findDeclarations(PsiSymbolDeclaration.class, file, offset); | ||
| } | ||
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| @SuppressWarnings({"UnstableApiUsage", "OverrideOnly"}) | ||
| public <T extends PsiSymbolDeclaration> @NotNull Collection<T> findDeclarations(@NotNull Class<T> type, @NotNull PsiFile file, int offset) { | ||
| List<PsiSymbolDeclaration> allDeclarations = new ArrayList<>(); | ||
| PsiTreeUtilKt.elementsAtOffsetUp(file, offset) | ||
| .forEachRemaining(element -> allDeclarations.addAll(element.getFirst().getOwnDeclarations())); | ||
| return allDeclarations.stream() | ||
| .filter(declaration -> declaration.getAbsoluteRange().contains(offset)) | ||
| .filter(type::isInstance).map(type::cast) | ||
| .toList(); | ||
| } | ||
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| //endregion | ||
| //region findReferences | ||
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| @SuppressWarnings("UnstableApiUsage") | ||
| public <T extends PsiSymbolReference> @NotNull T findReference(@NotNull Class<T> type, @NotNull PsiFile file, int offset) { | ||
| myFixture.openFileInEditor(file.getVirtualFile()); | ||
| myFixture.getEditor().getCaretModel().moveToOffset(offset); | ||
| return assertInstanceOf(type, ReadAction.compute(myFixture::findSingleReferenceAtCaret)); | ||
| } | ||
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| //endregion | ||
| //region findNavigationTargets | ||
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| @SuppressWarnings("UnstableApiUsage") | ||
| public <T extends NavigationTarget> @NotNull Collection<T> findNavigationTargets(@NotNull Class<T> type, @NotNull Symbol symbol) { | ||
| return SymbolNavigationService.getInstance().getNavigationTargets(myFixture.getProject(), symbol).stream() | ||
| .filter(type::isInstance).map(type::cast) | ||
| .toList(); | ||
| } | ||
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| //endregion | ||
| //region findUsages | ||
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| @SuppressWarnings("UnstableApiUsage") | ||
| public @NotNull Collection<Usage> findUsages(@NotNull SearchTarget target, @NotNull PsiFile file) { | ||
| return findUsages(target, new LocalSearchScope(file)); | ||
| } | ||
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| @SuppressWarnings("UnstableApiUsage") | ||
| public @NotNull Collection<Usage> findUsages(@NotNull SearchTarget target, @NotNull SearchScope scope) { | ||
| return SearchService.getInstance().searchParameters(new UsageSearchParameters() { | ||
| @Override | ||
| public @NotNull SearchTarget getTarget() { | ||
| return target; | ||
| } | ||
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| @Override | ||
| public @NotNull SearchScope getSearchScope() { | ||
| return scope; | ||
| } | ||
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| @Override | ||
| public @NotNull Project getProject() { | ||
| return myFixture.getProject(); | ||
| } | ||
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| @Override | ||
| public boolean areValid() { | ||
| return true; | ||
| } | ||
| }).findAll(); | ||
| } | ||
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| //endregion | ||
| } |