+GetUniqueElementsOfStringSlices

comparisons.go

@@ -0,0 +1,20 @@
+package utils
+
+// GetUniqueElementsOfStringSlices finds the elements that are in the first slice but not in the second slice
+func GetUniqueElementsOfStringSlices(a, b []string) []string {
+	// Create a map to store the elements of "b"
+	mapOfElementsOfSliceB := make(map[string]bool)
+	for _, e := range b {
+		mapOfElementsOfSliceB[e] = true
+	}
+
+	// Iterate through "a" and find the elements that are not in "b"
+	var uniqueElementsOfSliceA []string
+	for _, e := range a {
+		if !mapOfElementsOfSliceB[e] {
+			uniqueElementsOfSliceA = append(uniqueElementsOfSliceA, e)
+		}
+	}
+
+	return uniqueElementsOfSliceA
+}

comparisons_test.go

@@ -0,0 +1,47 @@
+package utils
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestGetUniqueElementsOfStringSlices(t *testing.T) {
+	data := []map[string][]string{
+		{
+			"a":              []string{"apple", "banana", "cherry"},
+			"b":              []string{"banana", "cherry", "date", "fig"},
+			"expectedResult": []string{"apple"},
+		},
+		{
+			"a":              []string{"banana", "cherry", "date", "fig"},
+			"b":              []string{"apple", "banana", "cherry"},
+			"expectedResult": []string{"date", "fig"},
+		},
+		{
+			"a":              []string{"apple", "banana", "cherry"},
+			"b":              []string{"apple", "banana", "cherry"},
+			"expectedResult": []string{},
+		},
+		{
+			"a":              []string{},
+			"b":              []string{"apple", "banana", "cherry"},
+			"expectedResult": []string{},
+		},
+		{
+			"a":              []string{"apple", "banana", "cherry"},
+			"b":              []string{},
+			"expectedResult": []string{"apple", "banana", "cherry"},
+		},
+	}
+
+	for _, test := range data {
+		result := GetUniqueElementsOfStringSlices(test["a"], test["b"])
+		if !reflect.DeepEqual(result, test["expectedResult"]) {
+			if len(result) == 0 && len(test["expectedResult"]) == 0 {
+				continue
+			}
+
+			t.Errorf("\ngot:    %q\nwanted: %q\nfor:    %q", result, test["expectedResult"], test)
+		}
+	}
+}