diff --git a/test/breaks.test.js b/test/breaks.test.js
index 53672d7..5f75b14 100644
--- a/test/breaks.test.js
+++ b/test/breaks.test.js
@@ -2,19 +2,19 @@ const filter = require('../src/filter/breaks')
 const assert = require('assert')
 
 describe('Check "breaks"', () => {
-    it('Should return empty string', () => {
-        assert.equal(filter("\n"), "")
-    })
+  it('Should return empty string', () => {
+    assert.equal(filter("\n"), "")
+  })
 
-    it('Should return empty string', () => {
-        assert.equal(filter("\r"), "")
-    })
+  it('Should return empty string', () => {
+    assert.equal(filter("\r"), "")
+  })
 
-    it('Should return "foo"', () => {
-        assert.equal(filter("foo"), "foo")
-    })
+  it('Should return "foo"', () => {
+    assert.equal(filter("foo"), "foo")
+  })
 
-    it('Should return "foobar"', () => {
-        assert.equal(filter("\r\nfoo\nbar\r\n"), "foobar")
-    })
+  it('Should return "foobar"', () => {
+    assert.equal(filter("\r\nfoo\nbar\r\n"), "foobar")
+  })
 });
diff --git a/test/spaces.test.js b/test/spaces.test.js
index 6551871..22cdc9d 100644
--- a/test/spaces.test.js
+++ b/test/spaces.test.js
@@ -2,15 +2,15 @@ const filter = require('../src/filter/spaces')
 const assert = require('assert')
 
 describe('Check "spaces"', () => {
-    it('Should return ""', () => {
-        assert.equal(filter(""), "")
-    })
+  it('Should return ""', () => {
+    assert.equal(filter(""), "")
+  })
 
-    it('Should return "foo bar"', () => {
-        assert.equal(filter("foo  bar"), "foo bar")
-    })
+  it('Should return "foo bar"', () => {
+    assert.equal(filter("foo  bar"), "foo bar")
+  })
 
-    it('Should return "foo bar"', () => {
-        assert.equal(filter("foo \nbar"), "foo bar")
-    })
+  it('Should return "foo bar"', () => {
+    assert.equal(filter("foo \nbar"), "foo bar")
+  })
 });
diff --git a/test/trim.test.js b/test/trim.test.js
index 36c8f0e..3befb0e 100644
--- a/test/trim.test.js
+++ b/test/trim.test.js
@@ -2,19 +2,19 @@ const filter = require('../src/filter/trim')
 const assert = require('assert')
 
 describe('Check "trim"', () => {
-    it('Should return ""', () => {
-        assert.equal(filter(""), "")
-    })
+  it('Should return ""', () => {
+    assert.equal(filter(""), "")
+  })
 
-    it('Should return ""', () => {
-        assert.equal(filter(" "), "")
-    })
+  it('Should return ""', () => {
+    assert.equal(filter(" "), "")
+  })
 
-    it('Should return "foo"', () => {
-        assert.equal(filter(" foo "), "foo")
-    })
+  it('Should return "foo"', () => {
+    assert.equal(filter(" foo "), "foo")
+  })
 
-    it('Should return "foo bar"', () => {
-        assert.equal(filter(" foo bar \n"), "foo bar")
-    })
+  it('Should return "foo bar"', () => {
+    assert.equal(filter(" foo bar \n"), "foo bar")
+  })
 });