diff --git a/tests/postprocess.js b/tests/postprocess.js
index 2238005..7e262e3 100644
--- a/tests/postprocess.js
+++ b/tests/postprocess.js
@@ -1,5 +1,3 @@
-const fs = require("fs");
-
 const assert = require("chai").assert;
 const { preprocessJs: pre } = require("../lib/preprocess.js");
 const post = require("../lib/postprocess.js");
@@ -17,25 +15,4 @@ describe("postprocess", () => {
     post([[]], name);
     assert.isUndefined(cache.get(name));
   });
-
-  const mapFiles = [
-    "one-liner",
-    "common",
-    "each-do",
-    "multi-line",
-    "multiple-erb-in-one-line",
-  ];
-  mapFiles.forEach((name) => {
-    it(`correctly maps location from offset map on ${name}.js`, () => {
-      const filename = `tests/fixtures/${name}.js`;
-      const text = fs.readFileSync(filename, "utf-8");
-      pre(text, filename);
-
-      const esLintMessages = require(`../tests/fixtures/${name}.messages.js`);
-
-      const finalMessages = post([esLintMessages], filename);
-      const expectedMessages = require(`../tests/fixtures/${name}.expected.messages.js`);
-      assert.deepEqual(expectedMessages, finalMessages);
-    });
-  });
 });
diff --git a/tests/preprocess.js b/tests/preprocess.js
index ed048ad..4653e68 100644
--- a/tests/preprocess.js
+++ b/tests/preprocess.js
@@ -1,8 +1,5 @@
-const fs = require("fs");
-
 const assert = require("chai").assert;
 const { preprocessJs: p } = require("../lib/preprocess.js");
-const cache = require("../lib/cache.js");
 
 describe("preprocess", () => {
   it("does not crash", () => {
@@ -23,124 +20,4 @@ describe("preprocess", () => {
     const res = p("Hello, world!")[0];
     assert.equal(res, "Hello, world!");
   });
-
-  const replaceStringFiles = [
-    "one-liner",
-    "common",
-    "each-do",
-    "multi-line",
-    "multiple-erb-in-one-line",
-  ];
-  replaceStringFiles.forEach((name) => {
-    it(`replaces ruby with dummy string in "${name}.js"`, () => {
-      const text = fs.readFileSync(`tests/fixtures/${name}.js`, "utf-8");
-      const textLintableExpected = fs.readFileSync(`tests/fixtures/${name}.pre.js`, "utf-8");
-
-      const textLintable = p(text)[0];
-      assert.equal(textLintable, textLintableExpected);
-    });
-  });
-
-  const offsets = [
-    {
-      name: "one-liner",
-      expected: {
-        lineOffsetLookup: new Map([
-          [1, new Map([
-            [45, { lineOffset: 0, columnOffset: -32 }],
-          ])],
-        ]),
-        offsetLookup: new Map([
-          [45, { lineOffset: 0, columnOffset: -32 }],
-        ]),
-      },
-    },
-    {
-      name: "multi-line",
-      expected: {
-        lineOffsetLookup: new Map([
-          [2, new Map([
-            [64, { lineOffset: 2, columnOffset: -7 }],
-          ])],
-        ]),
-        offsetLookup: new Map([
-          [64, { lineOffset: 2, columnOffset: -7 }],
-        ]),
-      },
-    },
-    {
-      name: "common",
-      expected: {
-        lineOffsetLookup: new Map([
-          [1, new Map([
-            [50, { lineOffset: 0, columnOffset: -26 }],
-          ])],
-          [3, new Map([
-            [155, { lineOffset: 1, columnOffset: -13 }],
-          ])],
-          [9, new Map([
-            [268, { lineOffset: 1, columnOffset: -18 }],
-          ])],
-          [11, new Map([
-            [349, { lineOffset: 1, columnOffset: -32 }],
-          ])],
-        ]),
-        offsetLookup: new Map([
-          [50, { lineOffset: 0, columnOffset: -26 }],
-          [155, { lineOffset: 1, columnOffset: -13 }],
-          [268, { lineOffset: 1, columnOffset: -18 }],
-          [349, { lineOffset: 1, columnOffset: -32 }],
-        ]),
-      },
-    },
-    {
-      name: "each-do",
-      expected: {
-        lineOffsetLookup: new Map([
-          [1, new Map([
-            [41, { lineOffset: 0, columnOffset: -17 }],
-          ])],
-          [2, new Map([
-            [96, { lineOffset: 0, columnOffset: -33 }],
-          ])],
-          [3, new Map([
-            [154, { lineOffset: 0, columnOffset: -32 }],
-          ])],
-        ]),
-        offsetLookup: new Map([
-          [41, { lineOffset: 0, columnOffset: -17 }],
-          [96, { lineOffset: 0, columnOffset: -33 }],
-          [154, { lineOffset: 0, columnOffset: -32 }],
-        ]),
-      },
-    },
-    {
-      // This tests that column offsets are correctly calculated for multiple
-      // ERB tags on the same line.
-      name: "multiple-erb-in-one-line",
-      expected: {
-        lineOffsetLookup: new Map([
-          [1, new Map([
-            [61, { lineOffset: 0, columnOffset: -17 }],
-            [126, { lineOffset: 0, columnOffset: -45 }],
-            [188, { lineOffset: 0, columnOffset: -77 }],
-          ])],
-        ]),
-        offsetLookup: new Map([
-          [61, { lineOffset: 0, columnOffset: -17 }],
-          [126, { lineOffset: 0, columnOffset: -45 }],
-          [188, { lineOffset: 0, columnOffset: -77 }],
-        ]),
-      },
-    },
-  ];
-  offsets.forEach(({ name, expected }) => {
-    it(`correctly constructs offset map for "${name}.js`, () => {
-      const text = fs.readFileSync(`tests/fixtures/${name}.js`, "utf-8");
-      p(text, name);
-      const offsetMap = cache.get(name).offsetMap;
-      assert.deepEqual(offsetMap.lineOffsetLookup, expected.lineOffsetLookup);
-      assert.deepEqual(offsetMap.offsetLookup, expected.offsetLookup);
-    });
-  });
 });