test: add test and example for DropWhile

slice/slice_example_test.go

@@ -504,6 +504,29 @@ func ExampleDropRight() {
 	// []
 }
 
+func ExampleDropWhile() {
+	numbers := []int{1, 2, 3, 4, 5}
+
+	result1 := DropWhile(numbers, func(n int) bool {
+		return n != 2
+	})
+	result2 := DropWhile(numbers, func(n int) bool {
+		return true
+	})
+	result3 := DropWhile(numbers, func(n int) bool {
+		return n == 0
+	})
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+
+	// Output:
+	// [2 3 4 5]
+	// []
+	// [1 2 3 4 5]
+}
+
 func ExampleInsertAt() {
 	result1 := InsertAt([]string{"a", "b", "c"}, 0, "1")
 	result2 := InsertAt([]string{"a", "b", "c"}, 1, "1")

slice/slice_test.go

@@ -377,7 +377,7 @@ func TestDeleteAt(t *testing.T) {
 }
 
 func TestDrop(t *testing.T) {
-	assert := internal.NewAssert(t, "TestInterfaceSlice")
+	assert := internal.NewAssert(t, "TestDrop")
 
 	assert.Equal([]int{}, Drop([]int{}, 0))
 	assert.Equal([]int{}, Drop([]int{}, 1))
@@ -392,7 +392,7 @@ func TestDrop(t *testing.T) {
 }
 
 func TestDropRight(t *testing.T) {
-	assert := internal.NewAssert(t, "TestInterfaceSlice")
+	assert := internal.NewAssert(t, "TestDropRight")
 
 	assert.Equal([]int{}, DropRight([]int{}, 0))
 	assert.Equal([]int{}, DropRight([]int{}, 1))
@@ -406,6 +406,27 @@ func TestDropRight(t *testing.T) {
 	assert.Equal([]int{1, 2, 3, 4, 5}, DropRight([]int{1, 2, 3, 4, 5}, -1))
 }
 
+func TestDropWhile(t *testing.T) {
+	assert := internal.NewAssert(t, "TestDropWhile")
+
+	numbers := []int{1, 2, 3, 4, 5}
+
+	r1 := DropWhile(numbers, func(n int) bool {
+		return n != 2
+	})
+	assert.Equal([]int{2, 3, 4, 5}, r1)
+
+	r2 := DropWhile(numbers, func(n int) bool {
+		return true
+	})
+	assert.Equal([]int{}, r2)
+
+	r3 := DropWhile(numbers, func(n int) bool {
+		return n == 0
+	})
+	assert.Equal([]int{1, 2, 3, 4, 5}, r3)
+}
+
 func TestInsertAt(t *testing.T) {
 	assert := internal.NewAssert(t, "TestInsertAt")