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6dac520b66
This patch fixes the unsigned/signed comparison warnings in the unittests caused by comparing an unsigned integer with the signed integer literal. The offending signed integer literals have been replaced with unsigned integer literals.
91 lines
3.5 KiB
C++
91 lines
3.5 KiB
C++
//===--- UnresolvedMemberLookupTests.cpp --------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2020 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#include "SemaFixture.h"
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#include "swift/Sema/ConstraintSystem.h"
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using namespace swift;
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using namespace swift::unittest;
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using namespace swift::constraints;
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TEST_F(SemaTest, TestLookupAlwaysLooksThroughOptionalBase) {
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auto *intTypeDecl = getStdlibNominalTypeDecl("Int");
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auto *optTypeDecl = getStdlibNominalTypeDecl("Optional");
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auto intType = intTypeDecl->getDeclaredType();
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auto intOptType = OptionalType::get(intType);
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auto stringType = getStdlibType("String");
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auto *intMember = addExtensionVarMember(intTypeDecl, "test", intOptType);
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addExtensionVarMember(optTypeDecl, "test", stringType);
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auto *UME = new (Context)
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UnresolvedMemberExpr(SourceLoc(), DeclNameLoc(),
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DeclNameRef(Context.getIdentifier("test")), true);
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auto *UMCRE = new (Context) UnresolvedMemberChainResultExpr(UME, UME);
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ConstraintSystem cs(DC, ConstraintSystemOptions());
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cs.generateConstraints(UMCRE, DC);
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cs.addConstraint(
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ConstraintKind::Conversion, cs.getType(UMCRE), intOptType,
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cs.getConstraintLocator(UMCRE, ConstraintLocator::ContextualType));
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SmallVector<Solution, 2> solutions;
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cs.solve(solutions);
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// We should have a solution.
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ASSERT_EQ(solutions.size(), 1u);
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auto &solution = solutions[0];
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auto *locator = cs.getConstraintLocator(UME,
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ConstraintLocator::UnresolvedMember);
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auto choice = solution.getOverloadChoice(locator).choice;
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// The `test` member on `Int` should be selected.
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ASSERT_EQ(choice.getDecl(), intMember);
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}
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TEST_F(SemaTest, TestLookupPrefersResultsOnOptionalRatherThanBase) {
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auto *intTypeDecl = getStdlibNominalTypeDecl("Int");
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auto *optTypeDecl = getStdlibNominalTypeDecl("Optional");
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auto intType = intTypeDecl->getDeclaredType();
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auto intOptType = OptionalType::get(intType);
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addExtensionVarMember(intTypeDecl, "test", intOptType);
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auto *optMember = addExtensionVarMember(optTypeDecl, "test", intType);
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auto *UME = new (Context)
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UnresolvedMemberExpr(SourceLoc(), DeclNameLoc(),
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DeclNameRef(Context.getIdentifier("test")), true);
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auto *UMCRE = new (Context) UnresolvedMemberChainResultExpr(UME, UME);
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ConstraintSystem cs(DC, ConstraintSystemOptions());
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cs.generateConstraints(UMCRE, DC);
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cs.addConstraint(
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ConstraintKind::Conversion, cs.getType(UMCRE), intOptType,
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cs.getConstraintLocator(UMCRE, ConstraintLocator::ContextualType));
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SmallVector<Solution, 2> solutions;
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cs.solve(solutions);
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// We should have a solution.
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ASSERT_EQ(solutions.size(), 1u);
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auto &solution = solutions[0];
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auto *locator = cs.getConstraintLocator(UME,
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ConstraintLocator::UnresolvedMember);
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auto choice = solution.getOverloadChoice(locator).choice;
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auto score = solution.getFixedScore();
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// The `test` member on `Optional` should be chosen over the member on `Int`,
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// even though the score is otherwise worse.
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ASSERT_EQ(score.Data[SK_ValueToOptional], 1u);
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ASSERT_EQ(choice.getDecl(), optMember);
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}
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