diff --git a/tests/fixtures/common.expected.messages.js b/tests/fixtures/common.expected.messages.js
new file mode 100644
index 0000000..0488547
--- /dev/null
+++ b/tests/fixtures/common.expected.messages.js
@@ -0,0 +1,410 @@
+// To be honest: this file was auto-generated and not manually checked.
+// Should be fine though as the outcome is exactly what is expected.
+// (by checking in the IDE that all the autofixes work as assumed)
+
+const messages = [
+  {
+    ruleId: "@stylistic/no-multi-spaces",
+    severity: 2,
+    message: "Multiple spaces found before '('.",
+    line: 1,
+    column: 3,
+    nodeType: "Punctuator",
+    messageId: "multipleSpaces",
+    endLine: 1,
+    endColumn: 9,
+    fix: { range: [2, 8], text: " " },
+  },
+  {
+    ruleId: "no-constant-condition",
+    severity: 2,
+    message: "Unexpected constant condition.",
+    line: 1,
+    column: 30,
+    nodeType: "ObjectExpression",
+    messageId: "unexpected",
+    endLine: 1,
+    endColumn: 32,
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/no-multi-spaces",
+    severity: 2,
+    message: "Multiple spaces found before ')'.",
+    line: 1,
+    column: 25,
+    nodeType: "Punctuator",
+    messageId: "multipleSpaces",
+    endLine: 1,
+    endColumn: 30,
+    fix: { range: [24, 29], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-in-parens",
+    severity: 2,
+    message: "There should be no space before this paren.",
+    line: 1,
+    column: 25,
+    nodeType: "Program",
+    messageId: "rejectedClosingSpace",
+    endLine: 1,
+    endColumn: 30,
+    fix: { range: [24, 29], text: "" },
+  },
+  {
+    ruleId: "@stylistic/padded-blocks",
+    severity: 2,
+    message: "Block must be padded by blank lines.",
+    line: 1,
+    column: 32,
+    nodeType: "BlockStatement",
+    messageId: "alwaysPadBlock",
+    endLine: 2,
+    endColumn: 5,
+    fix: { range: [32, 32], text: "\n" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 2 spaces but found 4.",
+    line: 2,
+    column: 1,
+    nodeType: "Identifier",
+    messageId: "wrongIndentation",
+    endLine: 2,
+    endColumn: 5,
+    fix: { range: [33, 37], text: "  " },
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 2,
+    column: 17,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 2,
+    endColumn: 29,
+    fix: { range: [49, 61], text: "\"Success 🎉\"" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 2 spaces but found 5.",
+    line: 3,
+    column: 1,
+    nodeType: "Identifier",
+    messageId: "wrongIndentation",
+    endLine: 3,
+    endColumn: 6,
+    fix: { range: [64, 69], text: "  " },
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 3,
+    column: 8,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 3,
+    endColumn: 15,
+    fix: { range: [71, 78], text: "\"#yeah\"" },
+  },
+  {
+    ruleId: "@stylistic/no-multi-spaces",
+    severity: 2,
+    message: "Multiple spaces found before ''/* eslint-disable */{}/* eslint-enable */''.",
+    line: 3,
+    column: 22,
+    nodeType: "String",
+    messageId: "multipleSpaces",
+    endLine: 3,
+    endColumn: 24,
+    fix: { range: [85, 87], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-in-parens",
+    severity: 2,
+    message: "There should be no space after this paren.",
+    line: 3,
+    column: 22,
+    nodeType: "Program",
+    messageId: "rejectedOpeningSpace",
+    endLine: 3,
+    endColumn: 24,
+    fix: { range: [85, 87], text: "" },
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 3,
+    column: 24,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 4,
+    endColumn: 54,
+    fix: {
+      range: [87, 171],
+      text: `"<%= j render partial: 'yeah',\n`
+          + "                          locals: { cool: @cool } %>\"",
+    },
+  },
+  {
+    ruleId: "@stylistic/no-multi-spaces",
+    severity: 2,
+    message: "Multiple spaces found before ')'.",
+    line: 4,
+    column: 54,
+    nodeType: "Punctuator",
+    messageId: "multipleSpaces",
+    endLine: 4,
+    endColumn: 59,
+    fix: { range: [171, 176], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-in-parens",
+    severity: 2,
+    message: "There should be no space before this paren.",
+    line: 4,
+    column: 54,
+    nodeType: "Program",
+    messageId: "rejectedClosingSpace",
+    endLine: 4,
+    endColumn: 59,
+    fix: { range: [171, 176], text: "" },
+  },
+  {
+    ruleId: "@stylistic/padded-blocks",
+    severity: 2,
+    message: "Block must be padded by blank lines.",
+    line: 4,
+    column: 61,
+    nodeType: "BlockStatement",
+    messageId: "alwaysPadBlock",
+    endLine: 5,
+    endColumn: 3,
+    fix: { range: [181, 181], text: "\n" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 2.",
+    line: 5,
+    column: 1,
+    nodeType: "Punctuator",
+    messageId: "wrongIndentation",
+    endLine: 5,
+    endColumn: 3,
+    fix: { range: [179, 181], text: "" },
+  },
+  {
+    ruleId: "@stylistic/brace-style",
+    severity: 2,
+    message: "Closing curly brace does not appear on the same line as the subsequent block.",
+    line: 5,
+    column: 3,
+    nodeType: "Punctuator",
+    messageId: "nextLineClose",
+    endLine: 5,
+    endColumn: 4,
+    fix: { range: [182, 190], text: " " },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 7.",
+    line: 6,
+    column: 1,
+    nodeType: "Keyword",
+    messageId: "wrongIndentation",
+    endLine: 6,
+    endColumn: 8,
+    fix: { range: [183, 190], text: "" },
+  },
+  {
+    ruleId: "@stylistic/padded-blocks",
+    severity: 2,
+    message: "Block must be padded by blank lines.",
+    line: 6,
+    column: 13,
+    nodeType: "BlockStatement",
+    messageId: "alwaysPadBlock",
+    endLine: 7,
+    endColumn: 5,
+    fix: { range: [196, 196], text: "\n" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 2 spaces but found 4.",
+    line: 7,
+    column: 1,
+    nodeType: "Identifier",
+    messageId: "wrongIndentation",
+    endLine: 7,
+    endColumn: 5,
+    fix: { range: [197, 201], text: "  " },
+  },
+  {
+    ruleId: "@stylistic/padded-blocks",
+    severity: 2,
+    message: "Block must be padded by blank lines.",
+    line: 7,
+    column: 30,
+    nodeType: "BlockStatement",
+    messageId: "alwaysPadBlock",
+    endLine: 8,
+    endColumn: 9,
+    fix: { range: [235, 235], text: "\n" },
+  },
+  {
+    ruleId: "@stylistic/semi",
+    severity: 2,
+    message: "Missing semicolon.",
+    line: 7,
+    column: 30,
+    nodeType: "ExpressionStatement",
+    messageId: "missingSemi",
+    endLine: 8,
+    endColumn: 1,
+    fix: { range: [226, 226], text: ";" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 8.",
+    line: 8,
+    column: 1,
+    nodeType: "Punctuator",
+    messageId: "wrongIndentation",
+    endLine: 8,
+    endColumn: 9,
+    fix: { range: [227, 235], text: "" },
+  },
+  {
+    ruleId: "@stylistic/no-trailing-spaces",
+    severity: 2,
+    message: "Trailing spaces not allowed.",
+    line: 9,
+    column: 1,
+    nodeType: "Program",
+    messageId: "trailingSpace",
+    endLine: 9,
+    endColumn: 3,
+    fix: { range: [237, 239], text: "" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 2.",
+    line: 10,
+    column: 1,
+    nodeType: "Block",
+    messageId: "wrongIndentation",
+    endLine: 10,
+    endColumn: 3,
+    fix: { range: [240, 242], text: "" },
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 10,
+    column: 23,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 10,
+    endColumn: 25,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [248, 248], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 4.",
+    line: 11,
+    column: 1,
+    nodeType: "Identifier",
+    messageId: "wrongIndentation",
+    endLine: 11,
+    endColumn: 5,
+    fix: { range: [266, 270], text: "" },
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 11,
+    column: 17,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 11,
+    endColumn: 35,
+    fix: { range: [282, 300], text: "\"You are lucky 🍀\"" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 2.",
+    line: 12,
+    column: 1,
+    nodeType: "Block",
+    messageId: "wrongIndentation",
+    endLine: 12,
+    endColumn: 3,
+    fix: { range: [303, 305], text: "" },
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 12,
+    column: 23,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 12,
+    endColumn: 25,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [329, 329], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/no-trailing-spaces",
+    severity: 2,
+    message: "Trailing spaces not allowed.",
+    line: 13,
+    column: 1,
+    nodeType: "Program",
+    messageId: "trailingSpace",
+    endLine: 13,
+    endColumn: 3,
+    fix: { range: [315, 317], text: "" },
+  },
+  {
+    ruleId: "@stylistic/eol-last",
+    severity: 2,
+    message: "Newline required at end of file but not found.",
+    line: 13,
+    column: 3,
+    nodeType: "Program",
+    messageId: "missing",
+    fix: { range: [317, 317], text: "\n" },
+  },
+];
+
+module.exports = messages;
diff --git a/tests/fixtures/common.messages.js b/tests/fixtures/common.messages.js
new file mode 100644
index 0000000..a8363fc
--- /dev/null
+++ b/tests/fixtures/common.messages.js
@@ -0,0 +1,405 @@
+const messages = [
+  {
+    ruleId: "@stylistic/no-multi-spaces",
+    severity: 2,
+    message: "Multiple spaces found before '('.",
+    line: 1,
+    column: 3,
+    nodeType: "Punctuator",
+    messageId: "multipleSpaces",
+    endLine: 1,
+    endColumn: 9,
+    fix: { range: [2, 8], text: " " },
+  },
+  {
+    ruleId: "no-constant-condition",
+    severity: 2,
+    message: "Unexpected constant condition.",
+    line: 1,
+    column: 30,
+    nodeType: "ObjectExpression",
+    messageId: "unexpected",
+    endLine: 1,
+    endColumn: 32,
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/no-multi-spaces",
+    severity: 2,
+    message: "Multiple spaces found before ')'.",
+    line: 1,
+    column: 51,
+    nodeType: "Punctuator",
+    messageId: "multipleSpaces",
+    endLine: 1,
+    endColumn: 56,
+    fix: { range: [50, 55], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-in-parens",
+    severity: 2,
+    message: "There should be no space before this paren.",
+    line: 1,
+    column: 51,
+    nodeType: "Program",
+    messageId: "rejectedClosingSpace",
+    endLine: 1,
+    endColumn: 56,
+    fix: { range: [50, 55], text: "" },
+  },
+  {
+    ruleId: "@stylistic/padded-blocks",
+    severity: 2,
+    message: "Block must be padded by blank lines.",
+    line: 1,
+    column: 58,
+    nodeType: "BlockStatement",
+    messageId: "alwaysPadBlock",
+    endLine: 2,
+    endColumn: 5,
+    fix: { range: [58, 58], text: "\n" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 2 spaces but found 4.",
+    line: 2,
+    column: 1,
+    nodeType: "Identifier",
+    messageId: "wrongIndentation",
+    endLine: 2,
+    endColumn: 5,
+    fix: { range: [59, 63], text: "  " },
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 2,
+    column: 17,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 2,
+    endColumn: 29,
+    fix: { range: [75, 87], text: "\"Success 🎉\"" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 2 spaces but found 5.",
+    line: 3,
+    column: 1,
+    nodeType: "Identifier",
+    messageId: "wrongIndentation",
+    endLine: 3,
+    endColumn: 6,
+    fix: { range: [90, 95], text: "  " },
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 3,
+    column: 8,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 3,
+    endColumn: 15,
+    fix: { range: [97, 104], text: "\"#yeah\"" },
+  },
+  {
+    ruleId: "@stylistic/no-multi-spaces",
+    severity: 2,
+    message: "Multiple spaces found before ''/* eslint-disable */{}/* eslint-enable */''.",
+    line: 3,
+    column: 22,
+    nodeType: "String",
+    messageId: "multipleSpaces",
+    endLine: 3,
+    endColumn: 24,
+    fix: { range: [111, 113], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-in-parens",
+    severity: 2,
+    message: "There should be no space after this paren.",
+    line: 3,
+    column: 22,
+    nodeType: "Program",
+    messageId: "rejectedOpeningSpace",
+    endLine: 3,
+    endColumn: 24,
+    fix: { range: [111, 113], text: "" },
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 3,
+    column: 24,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 3,
+    endColumn: 67,
+    fix: {
+      range: [113, 156],
+      text: "\"/* eslint-disable */{}/* eslint-enable */\"",
+    },
+  },
+  {
+    ruleId: "@stylistic/no-multi-spaces",
+    severity: 2,
+    message: "Multiple spaces found before ')'.",
+    line: 3,
+    column: 67,
+    nodeType: "Punctuator",
+    messageId: "multipleSpaces",
+    endLine: 3,
+    endColumn: 72,
+    fix: { range: [156, 161], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-in-parens",
+    severity: 2,
+    message: "There should be no space before this paren.",
+    line: 3,
+    column: 67,
+    nodeType: "Program",
+    messageId: "rejectedClosingSpace",
+    endLine: 3,
+    endColumn: 72,
+    fix: { range: [156, 161], text: "" },
+  },
+  {
+    ruleId: "@stylistic/padded-blocks",
+    severity: 2,
+    message: "Block must be padded by blank lines.",
+    line: 3,
+    column: 74,
+    nodeType: "BlockStatement",
+    messageId: "alwaysPadBlock",
+    endLine: 4,
+    endColumn: 3,
+    fix: { range: [166, 166], text: "\n" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 2.",
+    line: 4,
+    column: 1,
+    nodeType: "Punctuator",
+    messageId: "wrongIndentation",
+    endLine: 4,
+    endColumn: 3,
+    fix: { range: [164, 166], text: "" },
+  },
+  {
+    ruleId: "@stylistic/brace-style",
+    severity: 2,
+    message: "Closing curly brace does not appear on the same line as the subsequent block.",
+    line: 4,
+    column: 3,
+    nodeType: "Punctuator",
+    messageId: "nextLineClose",
+    endLine: 4,
+    endColumn: 4,
+    fix: { range: [167, 175], text: " " },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 7.",
+    line: 5,
+    column: 1,
+    nodeType: "Keyword",
+    messageId: "wrongIndentation",
+    endLine: 5,
+    endColumn: 8,
+    fix: { range: [168, 175], text: "" },
+  },
+  {
+    ruleId: "@stylistic/padded-blocks",
+    severity: 2,
+    message: "Block must be padded by blank lines.",
+    line: 5,
+    column: 13,
+    nodeType: "BlockStatement",
+    messageId: "alwaysPadBlock",
+    endLine: 6,
+    endColumn: 5,
+    fix: { range: [181, 181], text: "\n" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 2 spaces but found 4.",
+    line: 6,
+    column: 1,
+    nodeType: "Identifier",
+    messageId: "wrongIndentation",
+    endLine: 6,
+    endColumn: 5,
+    fix: { range: [182, 186], text: "  " },
+  },
+  {
+    ruleId: "@stylistic/padded-blocks",
+    severity: 2,
+    message: "Block must be padded by blank lines.",
+    line: 6,
+    column: 30,
+    nodeType: "BlockStatement",
+    messageId: "alwaysPadBlock",
+    endLine: 7,
+    endColumn: 9,
+    fix: { range: [220, 220], text: "\n" },
+  },
+  {
+    ruleId: "@stylistic/semi",
+    severity: 2,
+    message: "Missing semicolon.",
+    line: 6,
+    column: 30,
+    nodeType: "ExpressionStatement",
+    messageId: "missingSemi",
+    endLine: 7,
+    endColumn: 1,
+    fix: { range: [211, 211], text: ";" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 8.",
+    line: 7,
+    column: 1,
+    nodeType: "Punctuator",
+    messageId: "wrongIndentation",
+    endLine: 7,
+    endColumn: 9,
+    fix: { range: [212, 220], text: "" },
+  },
+  {
+    ruleId: "@stylistic/no-trailing-spaces",
+    severity: 2,
+    message: "Trailing spaces not allowed.",
+    line: 8,
+    column: 1,
+    nodeType: "Program",
+    messageId: "trailingSpace",
+    endLine: 8,
+    endColumn: 3,
+    fix: { range: [222, 224], text: "" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 2.",
+    line: 9,
+    column: 1,
+    nodeType: "Block",
+    messageId: "wrongIndentation",
+    endLine: 9,
+    endColumn: 3,
+    fix: { range: [225, 227], text: "" },
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 9,
+    column: 23,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 9,
+    endColumn: 25,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [248, 248], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 4.",
+    line: 10,
+    column: 1,
+    nodeType: "Identifier",
+    messageId: "wrongIndentation",
+    endLine: 10,
+    endColumn: 5,
+    fix: { range: [269, 273], text: "" },
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 10,
+    column: 17,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 10,
+    endColumn: 35,
+    fix: { range: [285, 303], text: "\"You are lucky 🍀\"" },
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 2.",
+    line: 11,
+    column: 1,
+    nodeType: "Block",
+    messageId: "wrongIndentation",
+    endLine: 11,
+    endColumn: 3,
+    fix: { range: [306, 308], text: "" },
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 11,
+    column: 23,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 11,
+    endColumn: 25,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [329, 329], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/no-trailing-spaces",
+    severity: 2,
+    message: "Trailing spaces not allowed.",
+    line: 12,
+    column: 1,
+    nodeType: "Program",
+    messageId: "trailingSpace",
+    endLine: 12,
+    endColumn: 3,
+    fix: { range: [350, 352], text: "" },
+  },
+  {
+    ruleId: "@stylistic/eol-last",
+    severity: 2,
+    message: "Newline required at end of file but not found.",
+    line: 12,
+    column: 3,
+    nodeType: "Program",
+    messageId: "missing",
+    fix: { range: [352, 352], text: "\n" },
+  },
+];
+
+module.exports = messages;
diff --git a/tests/fixtures/each-do.expected.messages.js b/tests/fixtures/each-do.expected.messages.js
new file mode 100644
index 0000000..dc0e209
--- /dev/null
+++ b/tests/fixtures/each-do.expected.messages.js
@@ -0,0 +1,69 @@
+const messages = [
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 1,
+    column: 21,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 1,
+    endColumn: 23,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [21, 21], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 2,
+    column: 13,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 2,
+    endColumn: 23,
+    fix: {
+      range: [37, 47],
+      text: "\"<%= j %>\"",
+    },
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 3,
+    column: 21,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 3,
+    endColumn: 23,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [134, 134], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/eol-last",
+    severity: 2,
+    message: "Newline required at end of file but not found.",
+    line: 3,
+    column: 10,
+    nodeType: "Program",
+    messageId: "missing",
+    fix: { range: [72, 72], text: "\n" },
+  },
+];
+
+module.exports = messages;
diff --git a/tests/fixtures/each-do.messages.js b/tests/fixtures/each-do.messages.js
new file mode 100644
index 0000000..d1060e3
--- /dev/null
+++ b/tests/fixtures/each-do.messages.js
@@ -0,0 +1,69 @@
+const messages = [
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 1,
+    column: 21,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 1,
+    endColumn: 23,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [21, 21], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 2,
+    column: 13,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 2,
+    endColumn: 56,
+    fix: {
+      range: [54, 97],
+      text: "\"/* eslint-disable */{}/* eslint-enable */\"",
+    },
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 3,
+    column: 21,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 3,
+    endColumn: 23,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [134, 134], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/eol-last",
+    severity: 2,
+    message: "Newline required at end of file but not found.",
+    line: 3,
+    column: 42,
+    nodeType: "Program",
+    messageId: "missing",
+    fix: { range: [154, 154], text: "\n" },
+  },
+];
+
+module.exports = messages;
diff --git a/tests/fixtures/multi-line.expected.messages.js b/tests/fixtures/multi-line.expected.messages.js
new file mode 100644
index 0000000..91db8a6
--- /dev/null
+++ b/tests/fixtures/multi-line.expected.messages.js
@@ -0,0 +1,81 @@
+const messages = [
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 4.",
+    line: 1,
+    column: 1,
+    nodeType: "Keyword",
+    messageId: "wrongIndentation",
+    endLine: 1,
+    endColumn: 5,
+    fix: { range: [0, 4], text: "" },
+  },
+  {
+    ruleId: "no-unused-vars",
+    severity: 1,
+    message: "'a' is assigned a value but never used.",
+    line: 1,
+    column: 11,
+    nodeType: "Identifier",
+    messageId: "unusedVar",
+    endLine: 1,
+    endColumn: 12,
+  },
+  {
+    ruleId: "@stylistic/semi",
+    severity: 2,
+    message: "Missing semicolon.",
+    line: 1,
+    column: 23,
+    nodeType: "VariableDeclaration",
+    messageId: "missingSemi",
+    endLine: 2,
+    endColumn: 1,
+    fix: { range: [22, 22], text: ";" },
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 2,
+    column: 21,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 2,
+    endColumn: 23,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [44, 44], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 1.",
+    line: 5,
+    column: 1,
+    nodeType: "Identifier",
+    messageId: "wrongIndentation",
+    endLine: 5,
+    endColumn: 2,
+    fix: { range: [144, 145], text: "" },
+  },
+  {
+    ruleId: "@stylistic/eol-last",
+    severity: 2,
+    message: "Newline required at end of file but not found.",
+    line: 5,
+    column: 28,
+    nodeType: "Program",
+    messageId: "missing",
+    fix: { range: [171, 171], text: "\n" },
+  },
+];
+
+module.exports = messages;
diff --git a/tests/fixtures/multi-line.messages.js b/tests/fixtures/multi-line.messages.js
new file mode 100644
index 0000000..46efaeb
--- /dev/null
+++ b/tests/fixtures/multi-line.messages.js
@@ -0,0 +1,81 @@
+const messages = [
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 4.",
+    line: 1,
+    column: 1,
+    nodeType: "Keyword",
+    messageId: "wrongIndentation",
+    endLine: 1,
+    endColumn: 5,
+    fix: { range: [0, 4], text: "" },
+  },
+  {
+    ruleId: "no-unused-vars",
+    severity: 1,
+    message: "'a' is assigned a value but never used.",
+    line: 1,
+    column: 11,
+    nodeType: "Identifier",
+    messageId: "unusedVar",
+    endLine: 1,
+    endColumn: 12,
+  },
+  {
+    ruleId: "@stylistic/semi",
+    severity: 2,
+    message: "Missing semicolon.",
+    line: 1,
+    column: 23,
+    nodeType: "VariableDeclaration",
+    messageId: "missingSemi",
+    endLine: 2,
+    endColumn: 1,
+    fix: { range: [22, 22], text: ";" },
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 2,
+    column: 21,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 2,
+    endColumn: 23,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [44, 44], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/indent",
+    severity: 2,
+    message: "Expected indentation of 0 spaces but found 1.",
+    line: 3,
+    column: 1,
+    nodeType: "Identifier",
+    messageId: "wrongIndentation",
+    endLine: 3,
+    endColumn: 2,
+    fix: { range: [65, 66], text: "" },
+  },
+  {
+    ruleId: "@stylistic/eol-last",
+    severity: 2,
+    message: "Newline required at end of file but not found.",
+    line: 3,
+    column: 28,
+    nodeType: "Program",
+    messageId: "missing",
+    fix: { range: [92, 92], text: "\n" },
+  },
+];
+
+module.exports = messages;
diff --git a/tests/fixtures/multiple-erb-in-one-line.expected.messages.js b/tests/fixtures/multiple-erb-in-one-line.expected.messages.js
new file mode 100644
index 0000000..9c46479
--- /dev/null
+++ b/tests/fixtures/multiple-erb-in-one-line.expected.messages.js
@@ -0,0 +1,215 @@
+const messages = [
+  {
+    ruleId: "@stylistic/max-len",
+    severity: 2,
+    message: "This line has a length of 188. Maximum allowed is 100.",
+    line: 1,
+    column: 1,
+    nodeType: "Program",
+    messageId: "max",
+    endLine: 1,
+    endColumn: 112,
+  },
+  {
+    ruleId: "@stylistic/func-call-spacing",
+    severity: 2,
+    message: "Unexpected whitespace between function name and paren.",
+    line: 1,
+    column: 9,
+    nodeType: "CallExpression",
+    messageId: "unexpectedWhitespace",
+    fix: { range: [11, 12], text: "" },
+  },
+  {
+    ruleId: "@stylistic/function-call-spacing",
+    severity: 2,
+    message: "Unexpected whitespace between function name and paren.",
+    line: 1,
+    column: 9,
+    nodeType: "CallExpression",
+    messageId: "unexpectedWhitespace",
+    fix: { range: [11, 12], text: "" },
+  },
+  {
+    ruleId: "@stylistic/semi-spacing",
+    severity: 2,
+    message: "Missing whitespace after semicolon.",
+    line: 1,
+    column: 20,
+    nodeType: "ExpressionStatement",
+    messageId: "missingWhitespaceAfter",
+    endLine: 1,
+    endColumn: 21,
+    fix: { range: [20, 20], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-before-blocks",
+    severity: 2,
+    message: "Missing space before opening brace.",
+    line: 1,
+    column: 41,
+    nodeType: "BlockStatement",
+    messageId: "missingSpace",
+    endLine: 1,
+    endColumn: 43,
+    fix: { range: [40, 40], text: " " },
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 1,
+    column: 41,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 1,
+    endColumn: 43,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [41, 41], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/max-statements-per-line",
+    severity: 2,
+    message: "This line has 3 statements. Maximum allowed is 1.",
+    line: 1,
+    column: 45,
+    nodeType: "ExpressionStatement",
+    messageId: "exceed",
+    endLine: 1,
+    endColumn: 69,
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 1,
+    column: 57,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 1,
+    endColumn: 67,
+    fix: { range: [56, 66], text: "\"whatever\"" },
+  },
+  {
+    ruleId: "@stylistic/semi-spacing",
+    severity: 2,
+    message: "Missing whitespace after semicolon.",
+    line: 1,
+    column: 68,
+    nodeType: "ExpressionStatement",
+    messageId: "missingWhitespaceAfter",
+    endLine: 1,
+    endColumn: 69,
+    fix: { range: [68, 68], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-before-blocks",
+    severity: 2,
+    message: "Missing space before opening brace.",
+    line: 1,
+    column: 89,
+    nodeType: "BlockStatement",
+    messageId: "missingSpace",
+    endLine: 1,
+    endColumn: 91,
+    fix: { range: [88, 88], text: " " },
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 1,
+    column: 89,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 1,
+    endColumn: 91,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [106, 106], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 1,
+    column: 95,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 1,
+    endColumn: 101,
+    fix: { range: [94, 100], text: "\"true\"" },
+  },
+  {
+    ruleId: "@stylistic/semi-spacing",
+    severity: 2,
+    message: "Missing whitespace after semicolon.",
+    line: 1,
+    column: 102,
+    nodeType: "ExpressionStatement",
+    messageId: "missingWhitespaceAfter",
+    endLine: 1,
+    endColumn: 103,
+    fix: { range: [102, 102], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-before-blocks",
+    severity: 2,
+    message: "Missing space before opening brace.",
+    line: 1,
+    column: 123,
+    nodeType: "BlockStatement",
+    messageId: "missingSpace",
+    endLine: 1,
+    endColumn: 125,
+    fix: { range: [122, 122], text: " " },
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 1,
+    column: 123,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 1,
+    endColumn: 125,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [168, 168], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/eol-last",
+    severity: 2,
+    message: "Newline required at end of file but not found.",
+    line: 1,
+    column: 112,
+    nodeType: "Program",
+    messageId: "missing",
+    fix: { range: [111, 111], text: "\n" },
+  },
+];
+
+module.exports = messages;
diff --git a/tests/fixtures/multiple-erb-in-one-line.messages.js b/tests/fixtures/multiple-erb-in-one-line.messages.js
new file mode 100644
index 0000000..f316af8
--- /dev/null
+++ b/tests/fixtures/multiple-erb-in-one-line.messages.js
@@ -0,0 +1,215 @@
+const messages = [
+  {
+    ruleId: "@stylistic/max-len",
+    severity: 2,
+    message: "This line has a length of 188. Maximum allowed is 100.",
+    line: 1,
+    column: 1,
+    nodeType: "Program",
+    messageId: "max",
+    endLine: 1,
+    endColumn: 189,
+  },
+  {
+    ruleId: "@stylistic/func-call-spacing",
+    severity: 2,
+    message: "Unexpected whitespace between function name and paren.",
+    line: 1,
+    column: 9,
+    nodeType: "CallExpression",
+    messageId: "unexpectedWhitespace",
+    fix: { range: [11, 12], text: "" },
+  },
+  {
+    ruleId: "@stylistic/function-call-spacing",
+    severity: 2,
+    message: "Unexpected whitespace between function name and paren.",
+    line: 1,
+    column: 9,
+    nodeType: "CallExpression",
+    messageId: "unexpectedWhitespace",
+    fix: { range: [11, 12], text: "" },
+  },
+  {
+    ruleId: "@stylistic/semi-spacing",
+    severity: 2,
+    message: "Missing whitespace after semicolon.",
+    line: 1,
+    column: 20,
+    nodeType: "ExpressionStatement",
+    messageId: "missingWhitespaceAfter",
+    endLine: 1,
+    endColumn: 21,
+    fix: { range: [20, 20], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-before-blocks",
+    severity: 2,
+    message: "Missing space before opening brace.",
+    line: 1,
+    column: 41,
+    nodeType: "BlockStatement",
+    messageId: "missingSpace",
+    endLine: 1,
+    endColumn: 43,
+    fix: { range: [40, 40], text: " " },
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 1,
+    column: 41,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 1,
+    endColumn: 43,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [41, 41], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/max-statements-per-line",
+    severity: 2,
+    message: "This line has 3 statements. Maximum allowed is 1.",
+    line: 1,
+    column: 62,
+    nodeType: "ExpressionStatement",
+    messageId: "exceed",
+    endLine: 1,
+    endColumn: 86,
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 1,
+    column: 74,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 1,
+    endColumn: 84,
+    fix: { range: [73, 83], text: "\"whatever\"" },
+  },
+  {
+    ruleId: "@stylistic/semi-spacing",
+    severity: 2,
+    message: "Missing whitespace after semicolon.",
+    line: 1,
+    column: 85,
+    nodeType: "ExpressionStatement",
+    messageId: "missingWhitespaceAfter",
+    endLine: 1,
+    endColumn: 86,
+    fix: { range: [85, 85], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-before-blocks",
+    severity: 2,
+    message: "Missing space before opening brace.",
+    line: 1,
+    column: 106,
+    nodeType: "BlockStatement",
+    messageId: "missingSpace",
+    endLine: 1,
+    endColumn: 108,
+    fix: { range: [105, 105], text: " " },
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 1,
+    column: 106,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 1,
+    endColumn: 108,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [106, 106], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 1,
+    column: 140,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 1,
+    endColumn: 146,
+    fix: { range: [139, 145], text: "\"true\"" },
+  },
+  {
+    ruleId: "@stylistic/semi-spacing",
+    severity: 2,
+    message: "Missing whitespace after semicolon.",
+    line: 1,
+    column: 147,
+    nodeType: "ExpressionStatement",
+    messageId: "missingWhitespaceAfter",
+    endLine: 1,
+    endColumn: 148,
+    fix: { range: [147, 147], text: " " },
+  },
+  {
+    ruleId: "@stylistic/space-before-blocks",
+    severity: 2,
+    message: "Missing space before opening brace.",
+    line: 1,
+    column: 168,
+    nodeType: "BlockStatement",
+    messageId: "missingSpace",
+    endLine: 1,
+    endColumn: 170,
+    fix: { range: [167, 167], text: " " },
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "no-empty",
+    severity: 2,
+    message: "Empty block statement.",
+    line: 1,
+    column: 168,
+    nodeType: "BlockStatement",
+    messageId: "unexpected",
+    endLine: 1,
+    endColumn: 170,
+    suggestions: [
+      {
+        messageId: "suggestComment",
+        data: { type: "block" },
+        fix: { range: [168, 168], text: " /* empty */ " },
+        desc: "Add comment inside empty block statement.",
+      },
+    ],
+    suppressions: [{ kind: "directive", justification: "" }],
+  },
+  {
+    ruleId: "@stylistic/eol-last",
+    severity: 2,
+    message: "Newline required at end of file but not found.",
+    line: 1,
+    column: 189,
+    nodeType: "Program",
+    messageId: "missing",
+    fix: { range: [188, 188], text: "\n" },
+  },
+];
+
+module.exports = messages;
diff --git a/tests/fixtures/one-liner.expected.messages.js b/tests/fixtures/one-liner.expected.messages.js
new file mode 100644
index 0000000..a920e21
--- /dev/null
+++ b/tests/fixtures/one-liner.expected.messages.js
@@ -0,0 +1,29 @@
+const messages = [
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 1,
+    column: 3,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 1,
+    endColumn: 15,
+    fix: {
+      range: [2, 14],
+      text: "\"#<%= id %>\"",
+    },
+  },
+  {
+    ruleId: "@stylistic/eol-last",
+    severity: 2,
+    message: "Newline required at end of file but not found.",
+    line: 1,
+    column: 24,
+    nodeType: "Program",
+    messageId: "missing",
+    fix: { range: [23, 23], text: "\n" },
+  },
+];
+
+module.exports = messages;
diff --git a/tests/fixtures/one-liner.messages.js b/tests/fixtures/one-liner.messages.js
new file mode 100644
index 0000000..f51be51
--- /dev/null
+++ b/tests/fixtures/one-liner.messages.js
@@ -0,0 +1,29 @@
+const messages = [
+  {
+    ruleId: "@stylistic/quotes",
+    severity: 2,
+    message: "Strings must use doublequote.",
+    line: 1,
+    column: 3,
+    nodeType: "Literal",
+    messageId: "wrongQuotes",
+    endLine: 1,
+    endColumn: 47,
+    fix: {
+      range: [2, 46],
+      text: "\"#/* eslint-disable */{}/* eslint-enable */\"",
+    },
+  },
+  {
+    ruleId: "@stylistic/eol-last",
+    severity: 2,
+    message: "Newline required at end of file but not found.",
+    line: 1,
+    column: 56,
+    nodeType: "Program",
+    messageId: "missing",
+    fix: { range: [55, 55], text: "\n" },
+  },
+];
+
+module.exports = messages;
diff --git a/tests/postprocess.js b/tests/postprocess.js
new file mode 100644
index 0000000..0484cbf
--- /dev/null
+++ b/tests/postprocess.js
@@ -0,0 +1,41 @@
+const fs = require("fs");
+
+const assert = require("chai").assert;
+const pre = require("../lib/preprocess.js");
+const post = require("../lib/postprocess.js");
+const cache = require("../lib/cache.js");
+
+describe("postprocess", () => {
+  it("deletes file from cache after postprocessing", () => {
+    const text = `console.log("Hello world!");`;
+    const name = "testfile.js";
+
+    pre(text, name);
+    assert.exists(cache.get(name));
+    assert.isNotEmpty(cache.get(name));
+
+    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/processor.js b/tests/preprocess.js
similarity index 100%
rename from tests/processor.js
rename to tests/preprocess.js