1 files changed, 31 insertions, 0 deletions
diff --git a/src/testdir/test_reltime.vim b/src/testdir/test_reltime.vim
new file mode 100644
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+++ b/src/testdir/test_reltime.vim
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+" Tests for reltime()
+
+source check.vim
+CheckFeature reltime
+
+func Test_reltime()
+  let g:test_is_flaky = 1
+  let now = reltime()
+  sleep 10m
+  let later = reltime()
+  let elapsed = now->reltime()
+  call assert_true(reltimestr(elapsed) =~ '0\.0')
+  call assert_true(elapsed->reltimestr() != '0.0')
+  call assert_true(reltimefloat(elapsed) < 0.1)
+  call assert_true(elapsed->reltimefloat() > 0.0)
+
+  let same = reltime(now, now)
+  call assert_equal('0.000', split(reltimestr(same))[0][:4])
+  call assert_equal(0.0, reltimefloat(same))
+
+  let differs = reltime(now, later)
+  call assert_true(reltimestr(differs) =~ '0\.0')
+  call assert_true(reltimestr(differs) != '0.0')
+  call assert_true(reltimefloat(differs) < 0.1)
+  call assert_true(reltimefloat(differs) > 0.0)
+
+  call assert_equal([], reltime({}))
+  call assert_equal([], reltime({}, {}))
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab