Function TestCompress1X

huff0/compress_test.go:224–270

(t *testing.T)

}

func TestCompress1X(t *testing.T) {
	for _, test := range testfiles {
		t.Run(test.name, func(t *testing.T) {
			var s Scratch
			buf0, err := test.fn()
			if err != nil {
				t.Fatal(err)
			}
			if len(buf0) > BlockSizeMax {
				buf0 = buf0[:BlockSizeMax]
			}
			tbSz, dSz, reSz, _ := EstimateSizes(buf0, &s)
			b, re, err := Compress1X(buf0, &s)
			if err != test.err1X {
				t.Errorf("want error %v (%T), got %v (%T)", test.err1X, test.err1X, err, err)
			}
			if err != nil {
				t.Log(test.name, err.Error())
				return
			}
			if b == nil {
				t.Error("got no output")
				return
			}
			min := s.minSize(len(buf0))
			if len(s.OutData) < min {
				t.Errorf("output data length (%d) below shannon limit (%d)", len(s.OutData), min)
			}
			if len(s.OutTable) == 0 {
				t.Error("got no table definition")
			}
			if re {
				t.Error("claimed to have re-used.")
			}
			if len(s.OutData) == 0 {
				t.Error("got no data output")
			}
			t.Logf("Estimate: table %d, got %d, data %d, got %d, reuse: %d", tbSz, len(s.OutTable), dSz, len(s.OutData), reSz)
			t.Logf("%s: %d -> %d bytes (%.2f:1) re:%t (table: %d bytes)", test.name, len(buf0), len(b), float64(len(buf0))/float64(len(b)), re, len(s.OutTable))
			s.Out = nil
			bRe, _, err := Compress1X(b, &s)
			if err == nil {
				t.Log("Could re-compress to", len(bRe))
			}
		})
	}
}

func TestCompress1XMustReuse(t *testing.T) {
	for _, test := range testfiles {