koreader/spec/unit/gettext_spec.lua

describe("GetText module", function()
    local GetText
    setup(function()
        require("commonrequire")
        GetText = require("gettext")
    end)
    describe("changeLang", function()
        it("should return nil when passing newlang = C", function()
            assert.is_nil(GetText.changeLang("C"))
        end)
        it("should return nil when passing empty string or nil value", function()
            assert.is_nil(GetText.changeLang(nil))
            assert.is_nil(GetText.changeLang(""))
        end)
        it("should return nil when passing values that start with en_US", function()
            assert.is_nil(GetText.changeLang("en_US"))
            assert.is_nil(GetText.changeLang("en_US:en"))
            assert.is_nil(GetText.changeLang("en_US.utf8"))
        end)
        it("should return false when it can't find a po file", function()
            assert.is_false(GetText.changeLang("nonsense"))
            assert.is_false(GetText.changeLang("more_NONSENSE"))
        end)
    end)
end)