1 files changed, 55 insertions, 0 deletions
diff --git a/std/fs/eol_test.ts b/std/fs/eol_test.ts
new file mode 100644
index 000000000..4669c795a
--- /dev/null
+++ b/std/fs/eol_test.ts
@@ -0,0 +1,55 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { test } from "../testing/mod.ts";
+import { assertEquals } from "../testing/asserts.ts";
+import { format, detect, EOL } from "./eol.ts";
+
+const CRLFinput = "deno\r\nis not\r\nnode";
+const Mixedinput = "deno\nis not\r\nnode";
+const Mixedinput2 = "deno\r\nis not\nnode";
+const LFinput = "deno\nis not\nnode";
+const NoNLinput = "deno is not node";
+
+test({
+  name: "[EOL] Detect CR LF",
+  fn(): void {
+    assertEquals(detect(CRLFinput), EOL.CRLF);
+  }
+});
+
+test({
+  name: "[EOL] Detect LF",
+  fn(): void {
+    assertEquals(detect(LFinput), EOL.LF);
+  }
+});
+
+test({
+  name: "[EOL] Detect No New Line",
+  fn(): void {
+    assertEquals(detect(NoNLinput), null);
+  }
+});
+
+test({
+  name: "[EOL] Detect Mixed",
+  fn(): void {
+    assertEquals(detect(Mixedinput), EOL.CRLF);
+    assertEquals(detect(Mixedinput2), EOL.CRLF);
+  }
+});
+
+test({
+  name: "[EOL] Format",
+  fn(): void {
+    assertEquals(format(CRLFinput, EOL.LF), LFinput);
+    assertEquals(format(LFinput, EOL.LF), LFinput);
+    assertEquals(format(LFinput, EOL.CRLF), CRLFinput);
+    assertEquals(format(CRLFinput, EOL.CRLF), CRLFinput);
+    assertEquals(format(CRLFinput, EOL.CRLF), CRLFinput);
+    assertEquals(format(NoNLinput, EOL.CRLF), NoNLinput);
+    assertEquals(format(Mixedinput, EOL.CRLF), CRLFinput);
+    assertEquals(format(Mixedinput, EOL.LF), LFinput);
+    assertEquals(format(Mixedinput2, EOL.CRLF), CRLFinput);
+    assertEquals(format(Mixedinput2, EOL.LF), LFinput);
+  }
+});