package version

import (
	"fmt"
	"runtime"
	"testing"
)

func TestGoVersion(t *testing.T) {
	got := GoVersion
	expected := runtime.Version()
	if got != expected {
		t.Errorf("Expected: %s ; Got: %s", got, expected)
	}
}

func TestOsArch(t *testing.T) {
	got := OsArch
	expected := runtime.GOOS + " (" + runtime.GOARCH + ")"
	if got != expected {
		t.Errorf("Expected: %s ; Got: %s", got, expected)
	}
}

func TestParseGitDescribe(t *testing.T) {
	expected := []info{
		info{0, 0, 0, []string{"dev"}, []string{"unknown"}},
		info{0, 0, 0, []string{}, []string{"git", "feedbeef"}},
		info{1, 2, 0, []string{"dev", "1"}, []string{"git", "83", "feedbeef"}},
		info{1, 2, 3, []string{"dev", "1"}, []string{"git", "83", "feedbeef", "dirty"}},
		info{1, 2, 3, []string{}, []string{"git", "dirty"}},
		info{1, 2, 3, []string{"beta"}, []string{"git", "dirty"}},
		info{1, 2, 3, []string{"rc"}, []string{}},
	}
	inputs := []string{
		"",
		"feedbeef",
		"v1.2-dev.1-83-gfeedbeef",
		"v1.2.3-dev.1-83-gfeedbeef-dirty",
		"v1.2.3-dirty",
		"v1.2.3-beta-dirty",
		"v1.2.3-rc",
	}
	for i := 0; i < len(expected); i++ {
		got := parseGitDescribe(inputs[i])
		if !expected[i].Equal(got) {
			t.Errorf("Got: %v, Expected: %v", got, expected[i])
		}
	}
}

func TestInfoStringer(t *testing.T) {
	inputs := []info{
		info{0, 0, 0, []string{"dev"}, []string{"unknown"}},
		info{0, 0, 0, []string{}, []string{"git", "feedbeef"}},
		info{1, 2, 0, []string{"dev", "1"}, []string{"git", "83", "feedbeef"}},
		info{1, 2, 3, []string{"dev", "1"}, []string{"git", "83", "feedbeef", "dirty"}},
		info{1, 2, 3, []string{}, []string{"git", "dirty"}},
		info{1, 2, 3, []string{"beta"}, []string{"git", "dirty"}},
		info{1, 2, 3, []string{"rc"}, []string{}},
	}
	expected := []string{
		"v0.0.0-dev+unknown",
		"v0.0.0+git.feedbeef",
		"v1.2.0-dev.1+git.83.feedbeef",
		"v1.2.3-dev.1+git.83.feedbeef.dirty",
		"v1.2.3+git.dirty",
		"v1.2.3-beta+git.dirty",
		"v1.2.3-rc",
	}
	for i := 0; i < len(expected); i++ {
		got := fmt.Sprint(inputs[i])
		if got != expected[i] {
			t.Errorf("Got: %v, Expected: %v", got, expected[i])
		}
	}
}