package version

import "testing"

func TestDescribe(t *testing.T) {
	const c = "4d00be5e1f0a9b8c7d6e5f4a3b2c1d0e9f8a7b6c"
	for _, tc := range []struct {
		tag, commit string
		modified    bool
		label, url  string
	}{
		{"v0.1.0", c, true, "v0.1.0", Repo + "/releases/tag/v0.1.0"},
		{"", c, false, "4d00be5e1f0a", Repo + "/commit/" + c},
		{"", c, true, "4d00be5e1f0a-modified", Repo + "/commit/" + c},
		{"", "", false, "0.1.0", Repo},
	} {
		b := describe("0.1.0", tc.tag, tc.commit, tc.modified)
		if b.Label != tc.label || b.URL != tc.url {
			t.Errorf("describe(%q, %q, %v) = %q %q, want %q %q", tc.tag, tc.commit, tc.modified, b.Label, b.URL, tc.label, tc.url)
		}
	}
}

func TestString(t *testing.T) {
	const c = "ca0f148b78b6e1f0a9b8c7d6e5f4a3b2c1d0e9f8"
	build := func(tag, commit string, modified bool, desc string) Build {
		b := describe("0.2.0-rc.1", tag, commit, modified)
		b.Since, b.Ahead = parseDescribe(desc, b.Commit)
		return b
	}
	for _, tc := range []struct {
		b    Build
		want string
	}{
		{build("v0.2.0-rc.1", c, false, "v0.2.0-rc.1-0-gca0f148b78b6"), "0.2.0-rc.1"},
		{build("", c, false, "v0.2.0-rc.1-3-gca0f148b78b6"), "dev ca0f148b78b6 (3 commits after v0.2.0-rc.1)"},
		{build("", c, true, "v0.2.0-rc.1-1-gca0f148b78b6"), "dev ca0f148b78b6-modified (1 commit after v0.2.0-rc.1)"},
		{build("", c, true, "v0.2.0-rc.1-0-gca0f148b78b6"), "dev ca0f148b78b6-modified (v0.2.0-rc.1 with uncommitted changes)"},
		{build("", c, false, "v0.1.0-0-gca0f148b78b6"), "dev ca0f148b78b6 (at v0.1.0)"},
		{build("", c, false, ""), "dev ca0f148b78b6"},
		// A describe of another commit (stale ldflags) is ignored.
		{build("", c, false, "v0.2.0-rc.1-3-gdeadbeef0000"), "dev ca0f148b78b6"},
		{build("", "", false, ""), "0.2.0-rc.1 (source build)"},
	} {
		if got := tc.b.String(); got != tc.want {
			t.Errorf("String() = %q, want %q", got, tc.want)
		}
	}
}