From 6016d166f3b7b906f0657c23a36aecb2dab83102 Mon Sep 17 00:00:00 2001
From: Kai Cataldo <kai@kaicataldo.com>
Date: Fri, 6 Dec 2019 13:05:34 -0500
Subject: [PATCH] Add estree plugin tests

---
 .../fixtures/estree/bigInt/basic/input.js     |   1 +
 .../fixtures/estree/bigInt/basic/output.json  | 102 ++++++++++++++++++
 .../test/fixtures/estree/bigInt/options.json  |   6 ++
 .../test/helpers/runFixtureTests.js           |  29 +++--
 4 files changed, 132 insertions(+), 6 deletions(-)
 create mode 100644 packages/babel-parser/test/fixtures/estree/bigInt/basic/input.js
 create mode 100644 packages/babel-parser/test/fixtures/estree/bigInt/basic/output.json
 create mode 100644 packages/babel-parser/test/fixtures/estree/bigInt/options.json

diff --git a/packages/babel-parser/test/fixtures/estree/bigInt/basic/input.js b/packages/babel-parser/test/fixtures/estree/bigInt/basic/input.js
new file mode 100644
index 000000000000..b01de9749f99
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/estree/bigInt/basic/input.js
@@ -0,0 +1 @@
+const a = 1n;
diff --git a/packages/babel-parser/test/fixtures/estree/bigInt/basic/output.json b/packages/babel-parser/test/fixtures/estree/bigInt/basic/output.json
new file mode 100644
index 000000000000..5f2108ad0862
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/estree/bigInt/basic/output.json
@@ -0,0 +1,102 @@
+{
+  "type": "File",
+  "start": 0,
+  "end": 13,
+  "loc": {
+    "start": {
+      "line": 1,
+      "column": 0
+    },
+    "end": {
+      "line": 1,
+      "column": 13
+    }
+  },
+  "program": {
+    "type": "Program",
+    "start": 0,
+    "end": 13,
+    "loc": {
+      "start": {
+        "line": 1,
+        "column": 0
+      },
+      "end": {
+        "line": 1,
+        "column": 13
+      }
+    },
+    "sourceType": "script",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "VariableDeclaration",
+        "start": 0,
+        "end": 13,
+        "loc": {
+          "start": {
+            "line": 1,
+            "column": 0
+          },
+          "end": {
+            "line": 1,
+            "column": 13
+          }
+        },
+        "declarations": [
+          {
+            "type": "VariableDeclarator",
+            "start": 6,
+            "end": 12,
+            "loc": {
+              "start": {
+                "line": 1,
+                "column": 6
+              },
+              "end": {
+                "line": 1,
+                "column": 12
+              }
+            },
+            "id": {
+              "type": "Identifier",
+              "start": 6,
+              "end": 7,
+              "loc": {
+                "start": {
+                  "line": 1,
+                  "column": 6
+                },
+                "end": {
+                  "line": 1,
+                  "column": 7
+                },
+                "identifierName": "a"
+              },
+              "name": "a"
+            },
+            "init": {
+              "type": "Literal",
+              "start": 10,
+              "end": 12,
+              "loc": {
+                "start": {
+                  "line": 1,
+                  "column": 10
+                },
+                "end": {
+                  "line": 1,
+                  "column": 12
+                }
+              },
+              "value": null,
+              "raw": "1n",
+              "bigint": "1"
+            }
+          }
+        ],
+        "kind": "const"
+      }
+    ]
+  }
+}
\ No newline at end of file
diff --git a/packages/babel-parser/test/fixtures/estree/bigInt/options.json b/packages/babel-parser/test/fixtures/estree/bigInt/options.json
new file mode 100644
index 000000000000..da7e9e174f39
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/estree/bigInt/options.json
@@ -0,0 +1,6 @@
+{
+  "plugins": [
+    "estree",
+    "bigInt"
+  ]
+}
diff --git a/packages/babel-parser/test/helpers/runFixtureTests.js b/packages/babel-parser/test/helpers/runFixtureTests.js
index f08ed2312101..e22584368be5 100644
--- a/packages/babel-parser/test/helpers/runFixtureTests.js
+++ b/packages/babel-parser/test/helpers/runFixtureTests.js
@@ -41,6 +41,11 @@ class FixtureError extends Error {
   }
 }
 
+// https://github.com/estree/estree/blob/master/es2020.md#bigintliteral
+function bigIntReplacer(key, value) {
+  return typeof value === "bigint" ? null : value;
+}
+
 export function runFixtureTests(fixturesPath, parseFunction) {
   const fixtures = getFixtures(fixturesPath);
 
@@ -61,7 +66,10 @@ export function runFixtureTests(fixturesPath, parseFunction) {
                   /^.*Got error message: /,
                   "",
                 );
-                fs.writeFileSync(fn, JSON.stringify(task.options, null, "  "));
+                fs.writeFileSync(
+                  fn,
+                  JSON.stringify(task.options, bigIntReplacer, "  "),
+                );
               }
             }
 
@@ -110,7 +118,10 @@ function save(test, ast) {
   // Ensure that RegExp and Errors are serialized as strings
   forceToString(RegExp, () =>
     forceToString(Error, () =>
-      fs.writeFileSync(test.expect.loc, JSON.stringify(ast, null, "  ")),
+      fs.writeFileSync(
+        test.expect.loc,
+        JSON.stringify(ast, bigIntReplacer, "  "),
+      ),
     ),
   );
 }
@@ -143,7 +154,10 @@ function runTest(test, parseFunction) {
           const fn = path.dirname(test.expect.loc) + "/options.json";
           test.options = test.options || {};
           test.options.throws = err.message;
-          fs.writeFileSync(fn, JSON.stringify(test.options, null, "  "));
+          fs.writeFileSync(
+            fn,
+            JSON.stringify(test.options, bigIntReplacer, "  "),
+          );
           return;
         }
 
@@ -172,11 +186,14 @@ function runTest(test, parseFunction) {
       const fn = path.dirname(test.expect.loc) + "/options.json";
       test.options = test.options || {};
       delete test.options.throws;
-      const contents = JSON.stringify(test.options, null, "  ");
+      const contents = JSON.stringify(test.options, bigIntReplacer, "  ");
       if (contents === "{}") {
         fs.unlinkSync(fn);
       } else {
-        fs.writeFileSync(fn, JSON.stringify(test.options, null, "  "));
+        fs.writeFileSync(
+          fn,
+          JSON.stringify(test.options, bigIntReplacer, "  "),
+        );
       }
       test.expect.loc += "on";
       return save(test, ast);
@@ -199,7 +216,7 @@ function runTest(test, parseFunction) {
 
 function ppJSON(v) {
   v = v instanceof RegExp || v instanceof Error ? v.toString() : v;
-  return JSON.stringify(v, null, 2);
+  return JSON.stringify(v, bigIntReplacer, 2);
 }
 
 function addPath(str, pt) {