def testWriteDiff(self):
        diff = DiffFlameGraph()
        val1 = diff.loadCSV("testa.txt")
        val2 = diff.loadCSV("testb.txt")

        diffCsv = diff.diffCsv(val1, val2)
        diff.writeDiff(diffCsv, "../output/diff.txt")

        diffCsv2 = diff.loadCSV("../output/diff.txt")
        self.assertTrue(diff.equal(diffCsv, diffCsv2))
    def testDiffKeys(self):
        diff = DiffFlameGraph()
        val1 = diff.loadCSV("testa.txt")
        val2 = diff.loadCSV("testb.txt")

        diffCsv = diff.diffCsv(val1, val2)

        # a;b; is gone from version 2 so should be -50
        # a;b;c is new, so should be 50
        compare = {"a;b;c": CsvRecord(50, "id1", "a;b;c"), "a;b": CsvRecord(int(-50), "id2", "a;b")}
        self.assertTrue(diff.equal(diffCsv, compare))