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Add test for let with complex constructor 

This CL adds a let unittest with a complex constructor. The test
verifies the entire statement is parsed.

Bug: tint:1633
Change-Id: I56bb7c009efb5668aa41c9b7ec80dcde65c4ec40
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/99863
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
This commit is contained in:
dan sinclair 2022-08-22 16:02:19 +00:00 committed by Dawn LUCI CQ
parent 96a7d5a6bd
commit 9284f8ab55
1 changed files with 26 additions and 0 deletions
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26
src/tint/reader/wgsl/parser_impl_variable_stmt_test.cc
View File

@ -153,6 +153,32 @@ TEST_F(ParserImplTest, VariableStmt_Let) {
ASSERT_EQ(e->source.range.end.column, 6u);
}
TEST_F(ParserImplTest, VariableStmt_Let_ComplexExpression) {
auto p = parser("let x = collide + collide_1;");
// Parse as `statement` to validate the `;` at the end so we know we parsed the whole expression
auto e = p->statement();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e.value, nullptr);
ASSERT_TRUE(e->Is<ast::VariableDeclStatement>());
auto* decl = e->As<ast::VariableDeclStatement>();
ASSERT_NE(decl->variable->constructor, nullptr);
ASSERT_TRUE(decl->variable->constructor->Is<ast::BinaryExpression>());
auto* expr = decl->variable->constructor->As<ast::BinaryExpression>();
EXPECT_EQ(expr->op, ast::BinaryOp::kAdd);
ASSERT_TRUE(expr->lhs->Is<ast::IdentifierExpression>());
auto* ident = expr->lhs->As<ast::IdentifierExpression>();
EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("collide"));
ASSERT_TRUE(expr->rhs->Is<ast::IdentifierExpression>());
ident = expr->rhs->As<ast::IdentifierExpression>();
EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("collide_1"));
}
TEST_F(ParserImplTest, VariableStmt_Let_MissingEqual) {
auto p = parser("let a : i32 1");
auto e = p->variable_statement();