feat(tests): add unit tests for Make function

Author: MuhammadSaim

goavatar_test.go

@@ -0,0 +1,85 @@
+package goavatar
+
+import (
+	"image/color"
+	"testing"
+)
+
+func TestMake(t *testing.T) {
+	tests := []struct {
+		name   string
+		input  string
+		opts   Options
+		width  int
+		height int
+	}{
+		{
+			name:   "Default settings",
+			input:  "[email protected]",
+			opts:   Options{}, // empty options for use the defaults
+			width:  256,
+			height: 256,
+		},
+		{
+			name:  "Custom width and height",
+			input: "custom-size",
+			opts:  Options{Width: 512, Height: 512},
+			width: 512, height: 512,
+		},
+		{
+			name:  "Custom background color",
+			input: "custom-bg",
+			opts:  Options{BgColor: color.RGBA{255, 0, 0, 255}}, // Red background
+			width: 256, height: 256,
+		},
+		{
+			name:   "QuantumNomad42",
+			input:  "QuantumNomad42",
+			opts:   Options{Width: 512, Height: 512},
+			width:  512,
+			height: 512,
+		},
+		{
+			name:   "EchoFrost7",
+			input:  "EchoFrost7",
+			opts:   Options{Width: 512, Height: 512},
+			width:  512,
+			height: 512,
+		},
+	}
+
+	for _, tt := range tests {
+
+		img := Make(tt.input, tt.opts)
+
+		// check if the return image is not nill
+		if img == nil {
+			t.Fatalf("Make() returned nil for input %q", tt.input)
+		}
+
+		// check if dimensions is matched the expected size
+		bounds := img.Bounds()
+		if bounds.Dx() != tt.width || bounds.Dy() != tt.height {
+			t.Errorf("Unexepected image size for %q: go %dx%d, want %dx%d",
+				tt.input,
+				bounds.Dx(),
+				bounds.Dy(),
+				tt.width,
+				tt.height,
+			)
+		}
+
+		// check if the top left pixel matches the BG color
+		// check BgColor is set not an empty
+		if tt.opts.BgColor != (color.RGBA{}) {
+			expectedBgColor := tt.opts.BgColor
+			actualColor := img.At(0, 0).(color.RGBA) // get the top left pixel color
+
+			if actualColor != expectedBgColor {
+				t.Errorf("Unexepected background color for %q: got %v, want %v", tt.input, actualColor, expectedBgColor)
+			}
+
+		}
+
+	}
+}