Add tests for fs.download

1 files changed, 62 insertions, 0 deletions

diff --git a/spec/fs_spec.lua b/spec/fs_spec.lua
index a60dac56..29176af5 100644
--- a/spec/fs_spec.lua
+++ b/spec/fs_spec.lua
@@ -5,6 +5,7 @@ local fs = require("luarocks.fs")
 local lfs = require("lfs")
 local is_win = test_env.TEST_TARGET_OS == "windows"
 local posix_ok = pcall(require, "posix")
+local testing_paths = test_env.testing_paths
 
 describe("Luarocks fs test #whitebox #w_fs", function()
    local get_tmp_path = function()
@@ -1183,4 +1184,65 @@ describe("Luarocks fs test #whitebox #w_fs", function()
          assert.falsy(exists_file(tmpdir))
       end)
    end)
+   
+   describe("fs.download", function()
+      local tmpfile
+      local tmpdir
+      
+      setup(function()
+         test_env.mock_server_init()
+      end)
+      
+      teardown(function()
+         test_env.mock_server_done()
+      end)
+
+      after_each(function()
+         if tmpfile then
+            os.remove(tmpfile)
+            tmpfile = nil
+         end
+         if tmpdir then
+            lfs.rmdir(tmpdir)
+            tmpdir = nil
+         end
+      end)
+      
+      it("returns true and fetches the url argument into the specified filename #mock", function()
+         tmpfile = get_tmp_path()
+         assert.truthy(fs.download("http://localhost:8080/file/a_rock.lua", tmpfile))
+         local fd = assert(io.open(tmpfile, "r"))
+         local downloadcontent = assert(fd:read("*a"))
+         fd:close()
+         fd = assert(io.open(testing_paths.fixtures_dir .. "/a_rock.lua", "r"))
+         local originalcontent = assert(fd:read("*a"))
+         fd:close()
+         assert.same(downloadcontent, originalcontent)
+      end)
+      
+      it("returns true and fetches the url argument into a file whose name matches the basename of the url if the filename argument is not given #mock", function()
+         tmpdir = get_tmp_path()
+         lfs.mkdir(tmpdir)
+         fs.change_dir(tmpdir)
+         assert.truthy(fs.download("http://localhost:8080/file/a_rock.lua"))
+         tmpfile = tmpdir .. "/a_rock.lua"
+         local fd = assert(io.open(tmpfile, "r"))
+         local downloadcontent = assert(fd:read("*a"))
+         fd:close()
+         fd = assert(io.open(testing_paths.fixtures_dir .. "/a_rock.lua", "r"))
+         local originalcontent = assert(fd:read("*a"))
+         fd:close()
+         assert.same(downloadcontent, originalcontent)
+         fs.pop_dir()
+      end)
+      
+      it("returns false and does nothing if the url argument contains a nonexistent file #mock", function()
+         tmpfile = get_tmp_path()
+         assert.falsy(fs.download("http://localhost:8080/file/nonexistent", tmpfile))
+      end)
+      
+      it("returns false and does nothing if the url argument is invalid", function()
+         assert.falsy(fs.download("invalidurl"))
+      end)
+   end)
 end)