feat: test delete expr

Author: Simon Something

crates/forge/src/mutation/mutators/tests/delete_expression_mutator_test.rs

@@ -0,0 +1,64 @@
+use crate::mutation::{
+    mutant::{Mutant, MutationType},
+    mutators::{
+        delete_expression_mutator::DeleteExpressionMutator, tests::ast_helper::all_but_one,
+        MutationContext, Mutator,
+    },
+    visitor::AssignVarTypes,
+    Session,
+};
+use solar_parse::{
+    ast::{
+        Arena, BinOp, BinOpKind, ElementaryType, Expr, ExprKind, Ident, Lit, LitKind, Span, Symbol,
+        Type, TypeKind, VariableDefinition,
+    },
+    interface::BytePos,
+};
+
+use super::*;
+
+fn create_span(start: u32, end: u32) -> Span {
+    Span::new(BytePos(start), BytePos(end))
+}
+
+#[test]
+fn test_is_applicable_for_delete_expr() {
+    let arena = Arena::new();
+    let span = create_span(10, 20);
+
+    let mut val = Lit { span, symbol: Symbol::DUMMY, kind: LitKind::Number(23.into()) };
+
+    let left = arena.alloc(Expr { kind: ExprKind::Lit(&mut val, None), span });
+
+    let expr = arena.alloc(Expr { kind: ExprKind::Delete(left), span });
+
+    let context = MutationContext { expr: Some(expr), var_definition: None, span };
+
+    let mutator = DeleteExpressionMutator;
+    assert!(mutator.is_applicable(&context));
+}
+
+#[test]
+fn test_generate_delete_mutants() {
+    let arena = Arena::new();
+    let span = create_span(10, 20);
+
+    let mut val = Lit { span, symbol: Symbol::DUMMY, kind: LitKind::Number(23.into()) };
+
+    let left = arena.alloc(Expr { kind: ExprKind::Lit(&mut val, None), span });
+
+    let expr = arena.alloc(Expr { kind: ExprKind::Delete(left), span });
+
+    let context = MutationContext { expr: Some(expr), var_definition: None, span };
+
+    let mutator = DeleteExpressionMutator;
+    let mutants = mutator.generate_mutants(&context).unwrap();
+
+    assert_eq!(mutants.len(), 1);
+
+    if let MutationType::DeleteExpression = &mutants[0].mutation {
+        assert!(true);
+    } else {
+        panic!("Expected delete mutation");
+    }
+}

crates/forge/src/mutation/mutators/tests/mod.rs

@@ -1,3 +1,4 @@
 mod assignement_mutator_test;
 mod ast_helper;
 mod binary_op_mutator_test;
+mod delete_expression_mutator_test;