package main

import (
	"os"
	"testing"
)

func TestIncrementVersion(t *testing.T) {
	const TEST_VERSIONFILE = "main_test-VERSION"
	err := os.WriteFile(TEST_VERSIONFILE, []byte("0.0.0-0"), 0664)
	if err != nil {
		t.Fatalf("error writing %s: %v\n", TEST_VERSIONFILE, err)
	}
	defer os.Remove(TEST_VERSIONFILE)
	version, err := NewVersion(TEST_VERSIONFILE)
	if err != nil {
		t.Fatalf("error reading %s: %v\n", TEST_VERSIONFILE, err)
	}
	if want, got := "0.0.0-0", version.String(); want != got {
		t.Fatalf("error: wanted %s; got %s\n", want, got)
	}
	version = IncrementVersion(version, false, false, false, true)
	if want, got := "0.0.0-1", version.String(); want != got {
		t.Fatalf("error: wanted %s; got %s\n", want, got)
	}
	err = version.Flush()
	if err != nil {
		t.Fatalf("error flushing: %v\n", err)
	}
	version, err = NewVersion(TEST_VERSIONFILE)
	if err != nil {
		t.Fatalf("error reading %s: %v\n", TEST_VERSIONFILE, err)
	} else if want, got := "0.0.0-1", version.String(); want != got {
		t.Fatalf("error: wanted %s; got %s\n", want, got)
	}
	version = IncrementVersion(version, false, false, true, false)
	if want, got := "0.0.1-1", version.String(); want != got {
		t.Fatalf("error: wanted %s; got %s\n", want, got)
	}
	err = version.Flush()
	if err != nil {
		t.Fatalf("error flushing: %v\n", err)
	}
	version, err = NewVersion(TEST_VERSIONFILE)
	if err != nil {
		t.Fatalf("error reading %s: %v\n", TEST_VERSIONFILE, err)
	} else if want, got := "0.0.1-1", version.String(); want != got {
		t.Fatalf("error: wanted %s; got %s\n", want, got)
	}
	version = IncrementVersion(version, false, true, false, false)
	if want, got := "0.1.1-1", version.String(); want != got {
		t.Fatalf("error: wanted %s; got %s\n", want, got)
	}
	err = version.Flush()
	if err != nil {
		t.Fatalf("error flushing: %v\n", err)
	}
	version, err = NewVersion(TEST_VERSIONFILE)
	if err != nil {
		t.Fatalf("error reading %s: %v\n", TEST_VERSIONFILE, err)
	} else if want, got := "0.1.1-1", version.String(); want != got {
		t.Fatalf("error: wanted %s; got %s\n", want, got)
	}
	version = IncrementVersion(version, true, false, false, false)
	if want, got := "1.1.1-1", version.String(); want != got {
		t.Fatalf("error: wanted %s; got %s\n", want, got)
	}
	err = version.Flush()
	if err != nil {
		t.Fatalf("error flushing: %v\n", err)
	}
	version, err = NewVersion(TEST_VERSIONFILE)
	if err != nil {
		t.Fatalf("error reading %s: %v\n", TEST_VERSIONFILE, err)
	} else if want, got := "1.1.1-1", version.String(); want != got {
		t.Fatalf("error: wanted %s; got %s\n", want, got)
	}
}