feat(es/testing): Use __swc_snapshots__ for test! macro (#8191)

**Description:**

This implements something similar to `__snapshots__` of `jest`. Instead of storing the expected result as a string literal, we now store it in `$crate/tests/__swc_snapshots__/$path_to_test__$test_name.js`.

**Related issue:**

 - Closes #4509

crates/swc_ecma_compat_bugfixes/src/async_arrows_in_class.rs

@@ -128,18 +128,6 @@ mod tests {
             bar() {
                 (async () => { })();
             }
-        }"#,
-        r#"
-        class Foo {
-            constructor() {
-                this.x = async function () {
-                    return await 1;
-                };
-            }
-
-            bar() {
-                (async function () {})();
-            }
         }"#
     );
 
@@ -152,14 +140,6 @@ mod tests {
             foo() {
                 bar(async () => await 1);
             }
-        }"#,
-        r#"
-        class Foo {
-            foo() {
-              bar(async function () {
-                  return await 1;
-              });
-            }
         }"#
     );
 
@@ -172,15 +152,6 @@ mod tests {
             constructor() {
                 this.x = () => async () => await this;
             }
-        }"#,
-        r#"
-        class Foo {
-            constructor() {
-                var _this = this;
-                this.x = () => async function () {
-                    return await _this;
-                };
-            }
         }"#
     );
 
@@ -192,12 +163,6 @@ mod tests {
         |_| tr(),
         non_async_arrow,
         r#"
-        class Foo {
-            constructor() {
-                this.x = () => {};
-            }
-        }"#,
-        r#"
         class Foo {
             constructor() {
                 this.x = () => {};
@@ -209,7 +174,6 @@ mod tests {
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         non_class_async_arrow,
-        "let x = async () => await 1;",
         "let x = async () => await 1;"
     );
 }

crates/swc_ecma_compat_bugfixes/src/edge_default_param.rs

@@ -76,31 +76,27 @@ mod tests {
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         destructured_default_value,
-        "const f = ({ a = 1 }) => a;",
-        "const f = ({ a: a = 1 }) => a;"
+        "const f = ({ a = 1 }) => a;"
     );
 
     test!(
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         destructured_no_default_value,
-        "const f = ({ a }) => a;",
         "const f = ({ a }) => a;"
     );
 
     test!(
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         nested_default_value,
-        "const f = ({ a: { b = 1 } }) => [a, b];",
-        "const f = ({ a: { b: b = 1 } }) => [a, b];"
+        "const f = ({ a: { b = 1 } }) => [a, b];"
     );
 
     test!(
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         non_arguments,
-        "const f = () => { const { a = 1 } = {}; };",
         "const f = () => { const { a = 1 } = {}; };"
     );
 }

crates/swc_ecma_compat_bugfixes/src/safari_id_destructuring_collision_in_function_expression.rs

@@ -118,36 +118,28 @@ mod tests {
         basic,
         "(function a ([a]) { a });
          (function a({ ...a }) { a });
-         (function a({ a }) { a });",
-        "(function a([_a]) { _a; });
-         (function a({ ..._a }) { _a; });
-         (function a({ a: _a }) { _a; });"
+         (function a({ a }) { a });"
     );
 
     test!(
         Syntax::default(),
         |_| tr(),
         avoid_collision_1,
-        "(function a([a, _a]) { a + _a })",
-        "(function a([_a1, _a]) {
-          _a1 + _a;
-        });"
+        "(function a([a, _a]) { a + _a })"
     );
 
     test!(
         Syntax::default(),
         |_| tr(),
         use_duplicated_id,
-        "(function a([a]) { console.log(_a); })",
-        "(function a([_a1]) { console.log(_a); });"
+        "(function a([a]) { console.log(_a); })"
     );
 
     test!(
         Syntax::default(),
         |_| tr(),
         avoid_collision_2,
-        "(function _a([_a]) { console.log(_a); })",
-        "(function _a([__a]) { console.log(__a); });"
+        "(function _a([_a]) { console.log(_a); })"
     );
 
     test!(
@@ -157,19 +149,14 @@ mod tests {
         "let _a;
         (function a([a]) {
             _a = 3;
-        })",
-        "let _a;
-        (function a([_a1]) {
-            _a = 3;
         })"
     );
 
     test!(
         Syntax::default(),
         |_| tr(),
         assignment_expr_in_default_value,
-        "(function a([a = a = 3]) {})",
-        "(function a([_a = _a = 3]) {})"
+        "(function a([a = a = 3]) {})"
     );
 
     test!(
@@ -190,20 +177,6 @@ mod tests {
         
             return _type_of();
         }
-        ",
-        "
-        export default function _type_of__2() {
-            if (Date__1.now() > 0) {
-                _type_of__2 = function _type_of__5() {
-                    console__1.log(0);
-                };
-            } else {
-                _type_of__2 = function _type_of__8() {
-                    console__1.log(2);
-                };
-            }
-            return _type_of__2();
-        }
         "
     );
 }

crates/swc_ecma_compat_bugfixes/src/template_literal_caching.rs

@@ -169,22 +169,14 @@ mod tests {
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         single_tag,
-        "t`a`;",
-        r#"
-        let _ = t1 => t1, t1;
-        t(t1 || (t1 = _`a`));
-        "#
+        "t`a`;"
     );
 
     test!(
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         single_tag_empty,
-        "x``;",
-        r#"
-        let _ = t => t, t;
-        x(t || (t = _``));
-        "#
+        "x``;"
     );
 
     test!(
@@ -194,67 +186,42 @@ mod tests {
         r#"
         t`a`;
         x``;
-        "#,
-        r#"
-        let _ = t1 => t1, t1, t2;
-        t(t1 || (t1 = _`a`));
-        x(t2 || (t2 = _``));
         "#
     );
 
     test!(
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         function_scoped_tag,
-        "const f = t => t`a`;",
-        r#"
-        let _ = t => t, t;
-        const f = t1 => t1(t || (t = _`a`));
-        "#
+        "const f = t => t`a`;"
     );
 
     test!(
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         dynamic_tag,
-        "fn()``;",
-        r#"
-        let _ = t => t, t;
-        fn()(t || (t = _``));
-        "#
+        "fn()``;"
     );
 
     test!(
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         dynamic_expressions,
-        "const f = t => t`a${1}b${t}${[\"hello\"]}`;",
-        r#"
-        let _ = t => t, t;
-        const f = t1 => t1(t || (t = _`a${0}b${0}${0}`), 1, t1, ["hello"]);
-        "#
+        "const f = t => t`a${1}b${t}${[\"hello\"]}`;"
     );
 
     test!(
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         same_tag_safari_11,
-        "x`a` === x`a`;",
-        r#"
-        let _ = t => t, t, t1;
-        x(t || (t = _`a`)) === x(t1 || (t1 = _`a`));
-        "#
+        "x`a` === x`a`;"
     );
 
     test!(
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         shared_strings_safari_11,
-        "x`a` === y`a`;",
-        r#"
-        let _ = t => t, t, t1;
-        x(t || (t = _`a`)) === y(t1 || (t1 = _`a`));
-        "#
+        "x`a` === y`a`;"
     );
 
     test!(
@@ -266,12 +233,6 @@ mod tests {
         t(`a`);
         t;
         `a`;
-        "#,
-        r#"
-        `a`;
-        t(`a`);
-        t;
-        `a`;
         "#
     );
 
@@ -282,23 +243,13 @@ mod tests {
         r#"
         const _ = 1;
         t``;
-        "#,
-        r#"
-        let _ = t1 => t1, t1;
-
-        const _1 = 1;
-        t(t1 || (t1 = _``));
         "#
     );
 
     test!(
         ::swc_ecma_parser::Syntax::default(),
         |_| tr(),
         block_scoped_tag,
-        "for (let t of []) t`a`;",
-        r#"
-        let _ = t => t, t;
-        for (let t1 of []) t1(t || (t = _`a`));
-        "#
+        "for (let t of []) t`a`;"
     );
 }

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/async_arrows_in_class.rs/async_arrows.js

@@ -0,0 +1,10 @@
+class Foo {
+    constructor(){
+        this.x = async function() {
+            return await 1;
+        };
+    }
+    bar() {
+        (async function() {})();
+    }
+}

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/async_arrows_in_class.rs/callback.js

@@ -0,0 +1,7 @@
+class Foo {
+    foo() {
+        bar(async function() {
+            return await 1;
+        });
+    }
+}

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/async_arrows_in_class.rs/non_async_arrow.js

@@ -0,0 +1,5 @@
+class Foo {
+    constructor(){
+        this.x = ()=>{};
+    }
+}

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/async_arrows_in_class.rs/non_class_async_arrow.js

@@ -0,0 +1 @@
+let x = async ()=>await 1;

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/async_arrows_in_class.rs/this.js

@@ -0,0 +1,8 @@
+class Foo {
+    constructor(){
+        var _this = this;
+        this.x = ()=>async function() {
+                return await _this;
+            };
+    }
+}

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/edge_default_param.rs/destructured_default_value.js

@@ -0,0 +1 @@
+const f = ({ a: a = 1 })=>a;

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/edge_default_param.rs/destructured_no_default_value.js

@@ -0,0 +1 @@
+const f = ({ a })=>a;

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/edge_default_param.rs/nested_default_value.js

@@ -0,0 +1,4 @@
+const f = ({ a: { b: b = 1 } })=>[
+        a,
+        b
+    ];

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/edge_default_param.rs/non_arguments.js

@@ -0,0 +1,3 @@
+const f = ()=>{
+    const { a = 1 } = {};
+};

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/safari_id_destructuring_collision_in_function_expression.rs/assign_outside_var.js

@@ -0,0 +1,4 @@
+let _a;
+(function a([_a1]) {
+    _a = 3;
+});

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/safari_id_destructuring_collision_in_function_expression.rs/assignment_expr_in_default_value.js

@@ -0,0 +1 @@
+(function a([_a = _a = 3]) {});

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/safari_id_destructuring_collision_in_function_expression.rs/avoid_collision_1.js

@@ -0,0 +1,3 @@
+(function a([_a1, _a]) {
+    _a1 + _a;
+});

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/safari_id_destructuring_collision_in_function_expression.rs/avoid_collision_2.js

@@ -0,0 +1,3 @@
+(function _a([__a]) {
+    console.log(__a);
+});

crates/swc_ecma_compat_bugfixes/tests/__swc_snapshots__/src/safari_id_destructuring_collision_in_function_expression.rs/basic.js

@@ -0,0 +1,9 @@
+(function a([_a]) {
+    _a;
+});
+(function a({ ..._a }) {
+    _a;
+});
+(function a({ a: _a }) {
+    _a;
+});