diff --git a/packages/babel-core/src/transformation/normalize-opts.ts b/packages/babel-core/src/transformation/normalize-opts.ts
index e0dbf06f2e71..bf6cda2d5193 100644
--- a/packages/babel-core/src/transformation/normalize-opts.ts
+++ b/packages/babel-core/src/transformation/normalize-opts.ts
@@ -30,7 +30,7 @@ export default function normalizeOptions(config: ResolvedConfig): {} {
       sourceType:
         path.extname(filenameRelative) === ".mjs" ? "module" : sourceType,
 
-      ...(sourceFileName !== "unknown" && { sourceFilename: sourceFileName }),
+      sourceFileName: filename,
       plugins: [],
       ...opts.parserOpts,
     },
diff --git a/packages/babel-core/test/fixtures/parse/filename-provided/.babelignore b/packages/babel-core/test/fixtures/parse/.babelignore
similarity index 100%
rename from packages/babel-core/test/fixtures/parse/filename-provided/.babelignore
rename to packages/babel-core/test/fixtures/parse/.babelignore
diff --git a/packages/babel-core/test/fixtures/parse/filename-provided/.babelrc b/packages/babel-core/test/fixtures/parse/.babelrc
similarity index 100%
rename from packages/babel-core/test/fixtures/parse/filename-provided/.babelrc
rename to packages/babel-core/test/fixtures/parse/.babelrc
diff --git a/packages/babel-core/test/fixtures/parse/filename-provided/output.json b/packages/babel-core/test/fixtures/parse/filename-provided/output.json
deleted file mode 100644
index b87f1b654189..000000000000
--- a/packages/babel-core/test/fixtures/parse/filename-provided/output.json
+++ /dev/null
@@ -1,298 +0,0 @@
-{
-  "type": "File",
-  "start": 0,
-  "end": 91,
-  "errors": [],
-  "loc": {
-    "filename": "input.js",
-    "start": {
-      "line": 1,
-      "column": 0
-    },
-    "end": {
-      "line": 7,
-      "column": 0
-    }
-  },
-  "program": {
-    "type": "Program",
-    "start": 0,
-    "end": 91,
-    "loc": {
-      "filename": "input.js",
-      "start": {
-        "line": 1,
-        "column": 0
-      },
-      "end": {
-        "line": 7,
-        "column": 0
-      }
-    },
-    "interpreter": null,
-    "sourceType": "module",
-    "body": [{
-        "type": "ClassDeclaration",
-        "start": 0,
-        "end": 29,
-        "loc": {
-          "filename": "input.js",
-          "start": {
-            "line": 1,
-            "column": 0
-          },
-          "end": {
-            "line": 2,
-            "column": 17
-          }
-        },
-        "decorators": [{
-          "type": "Decorator",
-          "start": 0,
-          "end": 11,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 1,
-              "column": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 11
-            }
-          },
-          "expression": {
-            "type": "Identifier",
-            "start": 1,
-            "end": 11,
-            "loc": {
-              "filename": "input.js",
-              "start": {
-                "line": 1,
-                "column": 1
-              },
-              "end": {
-                "line": 1,
-                "column": 11
-              },
-              "identifierName": "annotation"
-            },
-            "name": "annotation"
-          }
-        }],
-        "id": {
-          "type": "Identifier",
-          "start": 18,
-          "end": 25,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 2,
-              "column": 6
-            },
-            "end": {
-              "line": 2,
-              "column": 13
-            },
-            "identifierName": "MyClass"
-          },
-          "name": "MyClass"
-        },
-        "superClass": null,
-        "body": {
-          "type": "ClassBody",
-          "start": 26,
-          "end": 29,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 2,
-              "column": 14
-            },
-            "end": {
-              "line": 2,
-              "column": 17
-            }
-          },
-          "body": []
-        }
-      },
-      {
-        "type": "FunctionDeclaration",
-        "start": 31,
-        "end": 90,
-        "loc": {
-          "filename": "input.js",
-          "start": {
-            "line": 4,
-            "column": 0
-          },
-          "end": {
-            "line": 6,
-            "column": 1
-          }
-        },
-        "id": {
-          "type": "Identifier",
-          "start": 40,
-          "end": 50,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 4,
-              "column": 9
-            },
-            "end": {
-              "line": 4,
-              "column": 19
-            },
-            "identifierName": "annotation"
-          },
-          "name": "annotation"
-        },
-        "generator": false,
-        "async": false,
-        "params": [{
-          "type": "Identifier",
-          "start": 51,
-          "end": 57,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 4,
-              "column": 20
-            },
-            "end": {
-              "line": 4,
-              "column": 26
-            },
-            "identifierName": "target"
-          },
-          "name": "target"
-        }],
-        "body": {
-          "type": "BlockStatement",
-          "start": 59,
-          "end": 90,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 4,
-              "column": 28
-            },
-            "end": {
-              "line": 6,
-              "column": 1
-            }
-          },
-          "body": [{
-            "type": "ExpressionStatement",
-            "start": 64,
-            "end": 88,
-            "loc": {
-              "filename": "input.js",
-              "start": {
-                "line": 5,
-                "column": 3
-              },
-              "end": {
-                "line": 5,
-                "column": 27
-              }
-            },
-            "expression": {
-              "type": "AssignmentExpression",
-              "start": 64,
-              "end": 87,
-              "loc": {
-                "filename": "input.js",
-                "start": {
-                  "line": 5,
-                  "column": 3
-                },
-                "end": {
-                  "line": 5,
-                  "column": 26
-                }
-              },
-              "operator": "=",
-              "left": {
-                "type": "MemberExpression",
-                "start": 64,
-                "end": 80,
-                "loc": {
-                  "filename": "input.js",
-                  "start": {
-                    "line": 5,
-                    "column": 3
-                  },
-                  "end": {
-                    "line": 5,
-                    "column": 19
-                  }
-                },
-                "object": {
-                  "type": "Identifier",
-                  "start": 64,
-                  "end": 70,
-                  "loc": {
-                    "filename": "input.js",
-                    "start": {
-                      "line": 5,
-                      "column": 3
-                    },
-                    "end": {
-                      "line": 5,
-                      "column": 9
-                    },
-                    "identifierName": "target"
-                  },
-                  "name": "target"
-                },
-                "property": {
-                  "type": "Identifier",
-                  "start": 71,
-                  "end": 80,
-                  "loc": {
-                    "filename": "input.js",
-                    "start": {
-                      "line": 5,
-                      "column": 10
-                    },
-                    "end": {
-                      "line": 5,
-                      "column": 19
-                    },
-                    "identifierName": "annotated"
-                  },
-                  "name": "annotated"
-                },
-                "computed": false
-              },
-              "right": {
-                "type": "BooleanLiteral",
-                "start": 83,
-                "end": 87,
-                "loc": {
-                  "filename": "input.js",
-                  "start": {
-                    "line": 5,
-                    "column": 22
-                  },
-                  "end": {
-                    "line": 5,
-                    "column": 26
-                  }
-                },
-                "value": true
-              }
-            }
-          }],
-          "directives": []
-        }
-      }
-    ],
-    "directives": []
-  },
-  "comments": []
-}
diff --git a/packages/babel-core/test/fixtures/parse/filename-provided/input.js b/packages/babel-core/test/fixtures/parse/input.js
similarity index 100%
rename from packages/babel-core/test/fixtures/parse/filename-provided/input.js
rename to packages/babel-core/test/fixtures/parse/input.js
diff --git a/packages/babel-core/test/fixtures/parse/passed-in-configuration/output.json b/packages/babel-core/test/fixtures/parse/output.json
similarity index 100%
rename from packages/babel-core/test/fixtures/parse/passed-in-configuration/output.json
rename to packages/babel-core/test/fixtures/parse/output.json
diff --git a/packages/babel-core/test/fixtures/parse/passed-in-configuration/input.js b/packages/babel-core/test/fixtures/parse/passed-in-configuration/input.js
deleted file mode 100644
index e8d44fe09050..000000000000
--- a/packages/babel-core/test/fixtures/parse/passed-in-configuration/input.js
+++ /dev/null
@@ -1,6 +0,0 @@
-@annotation
-class MyClass { }
-
-function annotation(target) {
-   target.annotated = true;
-}
diff --git a/packages/babel-core/test/fixtures/parse/sourceFileName-provided/.babelignore b/packages/babel-core/test/fixtures/parse/sourceFileName-provided/.babelignore
deleted file mode 100644
index e69de29bb2d1..000000000000
diff --git a/packages/babel-core/test/fixtures/parse/sourceFileName-provided/.babelrc b/packages/babel-core/test/fixtures/parse/sourceFileName-provided/.babelrc
deleted file mode 100644
index a4834e838136..000000000000
--- a/packages/babel-core/test/fixtures/parse/sourceFileName-provided/.babelrc
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "parserOpts": {
-  	"plugins": ["decorators-legacy"]
-  }
-}
diff --git a/packages/babel-core/test/fixtures/parse/sourceFileName-provided/input.js b/packages/babel-core/test/fixtures/parse/sourceFileName-provided/input.js
deleted file mode 100644
index e8d44fe09050..000000000000
--- a/packages/babel-core/test/fixtures/parse/sourceFileName-provided/input.js
+++ /dev/null
@@ -1,6 +0,0 @@
-@annotation
-class MyClass { }
-
-function annotation(target) {
-   target.annotated = true;
-}
diff --git a/packages/babel-core/test/fixtures/parse/sourceFileName-provided/output.json b/packages/babel-core/test/fixtures/parse/sourceFileName-provided/output.json
deleted file mode 100644
index b87f1b654189..000000000000
--- a/packages/babel-core/test/fixtures/parse/sourceFileName-provided/output.json
+++ /dev/null
@@ -1,298 +0,0 @@
-{
-  "type": "File",
-  "start": 0,
-  "end": 91,
-  "errors": [],
-  "loc": {
-    "filename": "input.js",
-    "start": {
-      "line": 1,
-      "column": 0
-    },
-    "end": {
-      "line": 7,
-      "column": 0
-    }
-  },
-  "program": {
-    "type": "Program",
-    "start": 0,
-    "end": 91,
-    "loc": {
-      "filename": "input.js",
-      "start": {
-        "line": 1,
-        "column": 0
-      },
-      "end": {
-        "line": 7,
-        "column": 0
-      }
-    },
-    "interpreter": null,
-    "sourceType": "module",
-    "body": [{
-        "type": "ClassDeclaration",
-        "start": 0,
-        "end": 29,
-        "loc": {
-          "filename": "input.js",
-          "start": {
-            "line": 1,
-            "column": 0
-          },
-          "end": {
-            "line": 2,
-            "column": 17
-          }
-        },
-        "decorators": [{
-          "type": "Decorator",
-          "start": 0,
-          "end": 11,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 1,
-              "column": 0
-            },
-            "end": {
-              "line": 1,
-              "column": 11
-            }
-          },
-          "expression": {
-            "type": "Identifier",
-            "start": 1,
-            "end": 11,
-            "loc": {
-              "filename": "input.js",
-              "start": {
-                "line": 1,
-                "column": 1
-              },
-              "end": {
-                "line": 1,
-                "column": 11
-              },
-              "identifierName": "annotation"
-            },
-            "name": "annotation"
-          }
-        }],
-        "id": {
-          "type": "Identifier",
-          "start": 18,
-          "end": 25,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 2,
-              "column": 6
-            },
-            "end": {
-              "line": 2,
-              "column": 13
-            },
-            "identifierName": "MyClass"
-          },
-          "name": "MyClass"
-        },
-        "superClass": null,
-        "body": {
-          "type": "ClassBody",
-          "start": 26,
-          "end": 29,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 2,
-              "column": 14
-            },
-            "end": {
-              "line": 2,
-              "column": 17
-            }
-          },
-          "body": []
-        }
-      },
-      {
-        "type": "FunctionDeclaration",
-        "start": 31,
-        "end": 90,
-        "loc": {
-          "filename": "input.js",
-          "start": {
-            "line": 4,
-            "column": 0
-          },
-          "end": {
-            "line": 6,
-            "column": 1
-          }
-        },
-        "id": {
-          "type": "Identifier",
-          "start": 40,
-          "end": 50,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 4,
-              "column": 9
-            },
-            "end": {
-              "line": 4,
-              "column": 19
-            },
-            "identifierName": "annotation"
-          },
-          "name": "annotation"
-        },
-        "generator": false,
-        "async": false,
-        "params": [{
-          "type": "Identifier",
-          "start": 51,
-          "end": 57,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 4,
-              "column": 20
-            },
-            "end": {
-              "line": 4,
-              "column": 26
-            },
-            "identifierName": "target"
-          },
-          "name": "target"
-        }],
-        "body": {
-          "type": "BlockStatement",
-          "start": 59,
-          "end": 90,
-          "loc": {
-            "filename": "input.js",
-            "start": {
-              "line": 4,
-              "column": 28
-            },
-            "end": {
-              "line": 6,
-              "column": 1
-            }
-          },
-          "body": [{
-            "type": "ExpressionStatement",
-            "start": 64,
-            "end": 88,
-            "loc": {
-              "filename": "input.js",
-              "start": {
-                "line": 5,
-                "column": 3
-              },
-              "end": {
-                "line": 5,
-                "column": 27
-              }
-            },
-            "expression": {
-              "type": "AssignmentExpression",
-              "start": 64,
-              "end": 87,
-              "loc": {
-                "filename": "input.js",
-                "start": {
-                  "line": 5,
-                  "column": 3
-                },
-                "end": {
-                  "line": 5,
-                  "column": 26
-                }
-              },
-              "operator": "=",
-              "left": {
-                "type": "MemberExpression",
-                "start": 64,
-                "end": 80,
-                "loc": {
-                  "filename": "input.js",
-                  "start": {
-                    "line": 5,
-                    "column": 3
-                  },
-                  "end": {
-                    "line": 5,
-                    "column": 19
-                  }
-                },
-                "object": {
-                  "type": "Identifier",
-                  "start": 64,
-                  "end": 70,
-                  "loc": {
-                    "filename": "input.js",
-                    "start": {
-                      "line": 5,
-                      "column": 3
-                    },
-                    "end": {
-                      "line": 5,
-                      "column": 9
-                    },
-                    "identifierName": "target"
-                  },
-                  "name": "target"
-                },
-                "property": {
-                  "type": "Identifier",
-                  "start": 71,
-                  "end": 80,
-                  "loc": {
-                    "filename": "input.js",
-                    "start": {
-                      "line": 5,
-                      "column": 10
-                    },
-                    "end": {
-                      "line": 5,
-                      "column": 19
-                    },
-                    "identifierName": "annotated"
-                  },
-                  "name": "annotated"
-                },
-                "computed": false
-              },
-              "right": {
-                "type": "BooleanLiteral",
-                "start": 83,
-                "end": 87,
-                "loc": {
-                  "filename": "input.js",
-                  "start": {
-                    "line": 5,
-                    "column": 22
-                  },
-                  "end": {
-                    "line": 5,
-                    "column": 26
-                  }
-                },
-                "value": true
-              }
-            }
-          }],
-          "directives": []
-        }
-      }
-    ],
-    "directives": []
-  },
-  "comments": []
-}
diff --git a/packages/babel-core/test/parse.js b/packages/babel-core/test/parse.js
index 6e41019b8fcc..b22ff86b4a90 100644
--- a/packages/babel-core/test/parse.js
+++ b/packages/babel-core/test/parse.js
@@ -17,40 +17,19 @@ function fixture(...args) {
 
 describe("parse", function () {
   it("should parse using configuration from .babelrc when a filename is provided", function () {
-    const input = fs.readFileSync(
-      fixture("filename-provided", "input.js"),
-      "utf8",
-    );
-    const output = require(fixture("filename-provided", "output.json"));
+    const input = fs.readFileSync(fixture("input.js"), "utf8");
+    const output = require(fixture("output"));
 
     const result = parse(input, {
-      filename: fixture("filename-provided", "input.js"),
-      cwd: fixture(),
-    });
-    expect(JSON.parse(JSON.stringify(result))).toEqual(output);
-  });
-
-  it("should parse using the specified sourceFileName", function () {
-    const input = fs.readFileSync(
-      fixture("sourceFileName-provided", "input.js"),
-      "utf8",
-    );
-    const output = require(fixture("sourceFileName-provided", "output.json"));
-
-    const result = parse(input, {
-      filename: fixture("sourceFileName-provided", "input.js"),
-      sourceFileName: "input.js",
+      filename: fixture("input.js"),
       cwd: fixture(),
     });
     expect(JSON.parse(JSON.stringify(result))).toEqual(output);
   });
 
   it("should parse using passed in configuration", function () {
-    const input = fs.readFileSync(
-      fixture("passed-in-configuration", "input.js"),
-      "utf8",
-    );
-    const output = require(fixture("passed-in-configuration", "output.json"));
+    const input = fs.readFileSync(fixture("input.js"), "utf8");
+    const output = require(fixture("output.json"));
 
     const result = parse(input, {
       parserOpts: {