Merge pull request #47 from Iiqbal2000/go/chr

Feat-Go: add Chr function

go/chr.go

@@ -0,0 +1,15 @@
+package pehape
+
+import "bytes"
+
+// Chr is a function that returns a character from a number.
+// Parameter :
+// - codepoint => it can be in decimal, octal, or hex values.
+// Return :
+// - single-byte string
+func Chr(codepoint int) string {
+	var result bytes.Buffer
+	result.WriteByte(byte(codepoint))
+
+	return result.String()
+}

go/chr_test.go

@@ -0,0 +1,57 @@
+package pehape_test
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+
+	PHP "github.com/teknologi-umum/pehape/go"
+)
+
+func TestChr(t *testing.T) {
+	testcases := []struct {
+		input     int
+		wantOuput string
+	}{
+		{
+			input:     65,
+			wantOuput: "A",
+		},
+		{
+			input:     053,
+			wantOuput: "+",
+		},
+		{
+			input:     0x52,
+			wantOuput: "R",
+		},
+		{
+			input:     -159,
+			wantOuput: "a",
+		},
+		{
+			input:     833,
+			wantOuput: "A",
+		},
+	}
+
+	for i, c := range testcases {
+		t.Run(fmt.Sprint(i+1), func(t *testing.T) {
+			got := PHP.Chr(c.input)
+
+			if c.wantOuput != got {
+				t.Errorf("want: %q, got: %q", c.wantOuput, got)
+			}
+		})
+	}
+
+	t.Run("symbol", func(t *testing.T) {
+		want := "🐘"
+
+		got := PHP.Chr(240) + PHP.Chr(159) + PHP.Chr(144) + PHP.Chr(152)
+
+		if !strings.EqualFold(want, got) {
+			t.Errorf("want: %q, got: %q", want, got)
+		}
+	})
+}

go/readme.md

@@ -75,4 +75,22 @@ fmt.Println(pehape.Ucwords(bar))
  fmt.Println(pehape.Strrev(bar))
  //result : "kasur rusak"
  ```
-
+
+ * `Chr`
+```go
+var charFromNumber = pehape.Chr(65)
+fmt.Println(charFromNumber)
+//result : "A"
+
+var charFromOctal = pehape.Chr(053)
+fmt.Println(charFromOctal)
+//result: "+"
+
+var charFromHex = pehape.Chr(0x52)
+fmt.Println(charFromHex)
+//result: "R"
+
+var symbol = pehape.Chr(240) + pehape.Chr(159) + pehape.Chr(144) + pehape.Chr(152)
+fmt.Println(symbol)
+//result : "🐘"
+```