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test(semantic): add more test cases for symbol references #4429

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Jul 24, 2024
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test(semantic): add more test cases for symbol references #4429

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28 changes: 27 additions & 1 deletion crates/oxc_semantic/tests/integration/symbols.rs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
use oxc_semantic::SymbolFlags;
use oxc_semantic::{Reference, SymbolFlags};

use crate::util::SemanticTester;

Expand Down Expand Up @@ -55,6 +55,18 @@ fn test_var_read_write() {
.has_number_of_writes(1)
.test();

SemanticTester::js("let x = 0; let foo = (0, x++)")
.has_some_symbol("x")
.has_number_of_reads(1)
.has_number_of_writes(1)
.test();

SemanticTester::js("let x = 0; x++")
.has_some_symbol("x")
.has_number_of_reads(0)
.has_number_of_writes(1)
.test();

SemanticTester::js("let a; let b = 1 + (0, ((a)));")
.has_some_symbol("a")
.has_number_of_reads(1)
Expand Down Expand Up @@ -96,6 +108,20 @@ fn test_types_simple() {
.contains_flags(SymbolFlags::TypeAlias)
.has_number_of_references(1)
.test();

SemanticTester::ts("function foo<T>(): T { }")
.has_some_symbol("T")
.contains_flags(SymbolFlags::TypeParameter)
.has_number_of_references(1)
.has_number_of_references_where(1, oxc_semantic::Reference::is_type)
.test();

SemanticTester::ts("function foo<T>(a: T): void {}")
.has_some_symbol("T")
.contains_flags(SymbolFlags::TypeParameter)
.has_number_of_references(1)
.has_number_of_references_where(1, Reference::is_type)
.test();
}

#[test]
Expand Down