feat: dateutils, maputils, sliceutils.

maputils/maputils_test.go

@@ -0,0 +1,139 @@
+package maputils_test
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tx7do/go-utils/maputils"
+)
+
+func TestKeys(t *testing.T) {
+	var daysMap = map[string]int{
+		"Sunday":    1,
+		"Monday":    2,
+		"Tuesday":   3,
+		"Wednesday": 4,
+		"Thursday":  5,
+		"Friday":    6,
+		"Saturday":  7,
+	}
+	keys := maputils.Keys(daysMap)
+	days := []string{"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}
+	sort.Strings(days)
+	sort.Strings(keys)
+	assert.Equal(t, days, keys)
+}
+
+func TestValues(t *testing.T) {
+	var daysMap = map[string]int{
+		"Sunday":    1,
+		"Monday":    2,
+		"Tuesday":   3,
+		"Wednesday": 4,
+		"Thursday":  5,
+		"Friday":    6,
+		"Saturday":  7,
+	}
+	values := maputils.Values(daysMap)
+	sort.Ints(values)
+	assert.Equal(t, []int{1, 2, 3, 4, 5, 6, 7}, values)
+}
+
+func TestMerge(t *testing.T) {
+	first := map[string]string{
+		"George": "Harrison",
+		"Betty":  "Davis",
+	}
+	second := map[string]string{
+		"Ronald": "Reagen",
+		"Betty":  "Stewart",
+	}
+
+	assert.Equal(t,
+		map[string]string{
+			"George": "Harrison",
+			"Betty":  "Stewart",
+			"Ronald": "Reagen",
+		}, maputils.Merge(first, second))
+}
+
+func TestForEach(t *testing.T) {
+	var daysMap = map[string]int{
+		"Sunday":    1,
+		"Monday":    2,
+		"Tuesday":   3,
+		"Wednesday": 4,
+		"Thursday":  5,
+		"Friday":    6,
+		"Saturday":  7,
+	}
+
+	sum := 0
+
+	maputils.ForEach(daysMap, func(_ string, day int) {
+		sum += day
+	})
+
+	assert.Equal(t, 28, sum)
+}
+
+func TestDrop(t *testing.T) {
+	var daysMap = map[string]int{
+		"Sunday":    1,
+		"Monday":    2,
+		"Tuesday":   3,
+		"Wednesday": 4,
+		"Thursday":  5,
+		"Friday":    6,
+		"Saturday":  7,
+	}
+
+	expectedResult := map[string]int{
+		"Sunday": 1,
+		"Friday": 6,
+	}
+	assert.Equal(t, expectedResult, maputils.Drop(daysMap, []string{"Monday", "Tuesday", "Wednesday", "Thursday", "Saturday"}))
+	// ensure we do not modify the original value
+	assert.Equal(t, expectedResult, daysMap)
+}
+
+func TestCopy(t *testing.T) {
+	var daysMap = map[string]int{
+		"Sunday":    1,
+		"Monday":    2,
+		"Tuesday":   3,
+		"Wednesday": 4,
+		"Thursday":  5,
+		"Friday":    6,
+		"Saturday":  7,
+	}
+	daysCopy := maputils.Copy(daysMap)
+	assert.Equal(t, daysMap, daysCopy)
+	delete(daysCopy, "Sunday")
+	assert.NotEqual(t, daysMap, daysCopy)
+}
+
+func TestFilter(t *testing.T) {
+	var daysMap = map[string]int{
+		"Sunday":    1,
+		"Monday":    2,
+		"Tuesday":   3,
+		"Wednesday": 4,
+		"Thursday":  5,
+		"Friday":    6,
+		"Saturday":  7,
+	}
+
+	var expectedResult = map[string]int{
+		"Monday":    2,
+		"Wednesday": 4,
+		"Friday":    6,
+	}
+
+	filteredDays := maputils.Filter(daysMap, func(_ string, value int) bool {
+		return value%2 == 0
+	})
+
+	assert.Equal(t, expectedResult, filteredDays)
+}