From ccb2460fa6bf8d9dbda3fa4bc8a8695bdfe8ea65 Mon Sep 17 00:00:00 2001
From: machakann <mckn@outlook.jp>
Date: Sat, 17 Aug 2019 14:05:55 +0800
Subject: [PATCH] Add tests for `lsp#utils#byteindex()`

---
 test/.themisrc               |  1 +
 test/lsp/utils.vimspec       | 28 ++++++++++++++++++++++++++++
 test/testfiles/multibyte.txt |  3 +++
 3 files changed, 32 insertions(+)
 create mode 100644 test/testfiles/multibyte.txt

diff --git a/test/.themisrc b/test/.themisrc
index 70fef823..d73cbf9d 100644
--- a/test/.themisrc
+++ b/test/.themisrc
@@ -1,2 +1,3 @@
+set encoding=utf-8
 call themis#option('recursive', 1)
 call themis#helper('command').with(themis#helper('assert'))
diff --git a/test/lsp/utils.vimspec b/test/lsp/utils.vimspec
index 0e49ebd7..6ac5dc3c 100644
--- a/test/lsp/utils.vimspec
+++ b/test/lsp/utils.vimspec
@@ -81,4 +81,32 @@ Describe lsp#utils
             endfor
         End
     End
+
+    Describe lsp#utils#byteindex
+        It should return the byte-index from the given character-index on a buffer
+            call setline(1, ['a β c', 'δ', ''])
+            Assert lsp#utils#byteindex('%', 1, 0) == 1
+            Assert lsp#utils#byteindex('%', 1, 1) == 2
+            Assert lsp#utils#byteindex('%', 1, 2) == 3
+            Assert lsp#utils#byteindex('%', 1, 3) == 5
+            Assert lsp#utils#byteindex('%', 1, 4) == 6
+            Assert lsp#utils#byteindex('%', 1, 5) == 7
+            Assert lsp#utils#byteindex('%', 2, 0) == 1
+            Assert lsp#utils#byteindex('%', 2, 1) == 3
+            Assert lsp#utils#byteindex('%', 3, 0) == 1
+            %delete
+        End
+
+        It should return the byte-index from the given character-index in an unloaded file
+            Assert lsp#utils#byteindex('./test/testfiles/multibyte.txt', 1, 0) == 1
+            Assert lsp#utils#byteindex('./test/testfiles/multibyte.txt', 1, 1) == 2
+            Assert lsp#utils#byteindex('./test/testfiles/multibyte.txt', 1, 2) == 3
+            Assert lsp#utils#byteindex('./test/testfiles/multibyte.txt', 1, 3) == 5
+            Assert lsp#utils#byteindex('./test/testfiles/multibyte.txt', 1, 4) == 6
+            Assert lsp#utils#byteindex('./test/testfiles/multibyte.txt', 1, 5) == 7
+            Assert lsp#utils#byteindex('./test/testfiles/multibyte.txt', 2, 0) == 1
+            Assert lsp#utils#byteindex('./test/testfiles/multibyte.txt', 2, 1) == 3
+            Assert lsp#utils#byteindex('./test/testfiles/multibyte.txt', 3, 0) == 1
+        End
+    End
 End
diff --git a/test/testfiles/multibyte.txt b/test/testfiles/multibyte.txt
new file mode 100644
index 00000000..eb30fd12
--- /dev/null
+++ b/test/testfiles/multibyte.txt
@@ -0,0 +1,3 @@
+a β c
+δ
+