package updater

import "testing"

func TestParseVersion(t *testing.T) {
	cases := []struct {
		in   string
		want Version
	}{
		{"v1.2.0", Version{1, 2, 0, ""}},
		{"1.2.0", Version{1, 2, 0, ""}},
		{"1.2", Version{1, 2, 0, ""}},
		{"1", Version{1, 0, 0, ""}},
		{"v1.2.0-rc1", Version{1, 2, 0, "rc1"}},
		{"1.2.0+build7", Version{1, 2, 0, ""}},
		{" v0.1.0 ", Version{0, 1, 0, ""}},
	}
	for _, tc := range cases {
		got, err := ParseVersion(tc.in)
		if err != nil {
			t.Errorf("ParseVersion(%q) errored: %v", tc.in, err)
			continue
		}
		if got != tc.want {
			t.Errorf("ParseVersion(%q) = %+v, want %+v", tc.in, got, tc.want)
		}
	}

	for _, in := range []string{"", "v", "abc", "1.2.3.4", "1.x", "-1.0.0"} {
		if got, err := ParseVersion(in); err == nil {
			t.Errorf("ParseVersion(%q) = %+v, want error", in, got)
		}
	}
}

func TestIsNewer(t *testing.T) {
	yes := [][2]string{
		{"v1.2.1", "v1.2.0"},
		{"v1.3.0", "v1.2.9"},
		{"v2.0.0", "v1.99.99"},
		{"v1.2.0", "v1.2.0-rc1"},
	}
	for _, tc := range yes {
		if !IsNewer(tc[0], tc[1]) {
			t.Errorf("IsNewer(%q, %q) = false, want true", tc[0], tc[1])
		}
	}

	no := [][2]string{
		{"v1.2.0", "v1.2.0"},
		{"v1.2.0", "v1.2.1"},
		{"v1.2.0-rc1", "v1.2.0"},
		// An unreadable tag must never trigger an update offer.
		{"garbage", "v1.2.0"},
		{"v1.2.0", "garbage"},
		{"", "v1.0.0"},
	}
	for _, tc := range no {
		if IsNewer(tc[0], tc[1]) {
			t.Errorf("IsNewer(%q, %q) = true, want false", tc[0], tc[1])
		}
	}
}