legacy tests: migrate test90

src/nvim/testdir/test90.in

@@ -1,53 +0,0 @@
-Tests for sha256() function.    vim: set ft=vim et ts=2 sw=2 :
-
-STARTTEST
-:so small.vim
-:if !exists('*sha256')
-   e! test.ok
-   wq! test.out
-:endif
-:"
-:let testcase='test for empty string: '
-:if sha256("") ==# 'e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855'
-: let res='ok'
-:else
-: let res='ng'
-:endif
-:$put =testcase.res
-:"
-:let testcase='test for 1 char: '
-:if sha256("a") ==# 'ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb'
-: let res='ok'
-:else
-: let res='ng'
-:endif
-:$put =testcase.res
-:"
-:let testcase='test for 3 chars: '
-:if sha256("abc") ==# 'ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad'
-: let res='ok'
-:else
-: let res='ng'
-:endif
-:$put =testcase.res
-:"
-:let testcase='test for contains meta char: '
-:if sha256("foo\nbar") ==# '807eff6267f3f926a21d234f7b0cf867a86f47e07a532f15e8cc39ed110ca776'
-: let res='ok'
-:else
-: let res='ng'
-:endif
-:$put =testcase.res
-:"
-:let testcase='test for contains non-ascii char: '
-:if sha256("\xde\xad\xbe\xef") ==# '5f78c33274e43fa9de5659265c1d917e25c03722dcb0b8d27db8d5feaa813953'
-: let res='ok'
-:else
-: let res='ng'
-:endif
-:$put =testcase.res
-"
-:/^start:/,$wq! test.out
-ENDTEST
-
-start:

src/nvim/testdir/test90.ok

@@ -1,6 +0,0 @@
-start:
-test for empty string: ok
-test for 1 char: ok
-test for 3 chars: ok
-test for contains meta char: ok
-test for contains non-ascii char: ok

test/functional/legacy/090_sha256_spec.lua

@@ -0,0 +1,64 @@
+-- Tests for sha256() function.
+
+local helpers = require('test.functional.helpers')
+local feed, insert, source = helpers.feed, helpers.insert, helpers.source
+local clear, execute, expect = helpers.clear, helpers.execute, helpers.expect
+
+describe('sha256()', function()
+  setup(clear)
+
+  it('is working', function()
+    insert("start:")
+
+    source([[
+      let testcase='test for empty string: '
+      if sha256("") ==# 'e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855'
+       let res='ok'
+      else
+       let res='ng'
+      endif
+      $put =testcase.res
+
+      let testcase='test for 1 char: '
+      if sha256("a") ==# 'ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb'
+       let res='ok'
+      else
+       let res='ng'
+      endif
+      $put =testcase.res
+
+      let testcase='test for 3 chars: '
+      if sha256("abc") ==# 'ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad'
+       let res='ok'
+      else
+       let res='ng'
+      endif
+      $put =testcase.res
+
+      let testcase='test for contains meta char: '
+      if sha256("foo\nbar") ==# '807eff6267f3f926a21d234f7b0cf867a86f47e07a532f15e8cc39ed110ca776'
+       let res='ok'
+      else
+       let res='ng'
+      endif
+      $put =testcase.res
+
+      let testcase='test for contains non-ascii char: '
+      if sha256("\xde\xad\xbe\xef") ==# '5f78c33274e43fa9de5659265c1d917e25c03722dcb0b8d27db8d5feaa813953'
+       let res='ok'
+      else
+       let res='ng'
+      endif
+      $put =testcase.res
+    ]])
+
+    -- Assert buffer contents.
+    expect([[
+      start:
+      test for empty string: ok
+      test for 1 char: ok
+      test for 3 chars: ok
+      test for contains meta char: ok
+      test for contains non-ascii char: ok]])
+  end)
+end)