Add unit tests for romanizer. Closes #8. (#21)

* Add unit tests for romanizer Closes #8

* splitted the test into chuncks, and added more languages

romanizer/romanizer_test.go

@@ -0,0 +1,181 @@
+package romanizer
+
+import "testing"
+
+// --------------------
+// Basic / Latin Tests
+// --------------------
+
+func TestRomanize_Basic(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected string
+	}{
+		{"", ""},
+		{"   ", ""},
+		{"Hello World", ""},
+		{"Hello, World!", ""},
+		{"CSCI 630 - Koito", ""},
+	}
+
+	for _, tt := range tests {
+		result := Romanize(tt.input)
+		if result != tt.expected {
+			t.Errorf("Romanize(%q) = %q, expected %q", tt.input, result, tt.expected)
+		}
+	}
+}
+
+// --------------------
+// Japanese
+// --------------------
+
+func TestRomanize_Japanese(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected string
+	}{
+		{"こんにちは", "konnichiha"},
+		{"   こんにちは   ", "konnichiha"},
+	}
+
+	for _, tt := range tests {
+		result := Romanize(tt.input)
+		if result != tt.expected {
+			t.Errorf("Romanize(%q) = %q, expected %q", tt.input, result, tt.expected)
+		}
+	}
+}
+
+// --------------------
+// Korean
+// --------------------
+
+func TestRomanize_Korean(t *testing.T) {
+	result := Romanize("안녕하세요")
+	expected := "annyeonghaseyo"
+
+	if result != expected {
+		t.Errorf("Romanize(%q) = %q, expected %q", "안녕하세요", result, expected)
+	}
+}
+
+// --------------------
+// Chinese
+// --------------------
+
+func TestRomanize_Chinese(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected string
+	}{
+		{"你好", "Ni Hao"},
+		{"Hello 世界", "Hello Shi Jie"},
+	}
+
+	for _, tt := range tests {
+		result := Romanize(tt.input)
+		if result != tt.expected {
+			t.Errorf("Romanize(%q) = %q, expected %q", tt.input, result, tt.expected)
+		}
+	}
+}
+
+// --------------------
+// Russian (Cyrillic)
+// --------------------
+
+func TestRomanize_Russian(t *testing.T) {
+	result := Romanize("Привет мир")
+	expected := "Privet mir"
+
+	if result != expected {
+		t.Errorf("Romanize(%q) = %q, expected %q", "Привет мир", result, expected)
+	}
+}
+
+// --------------------
+// Greek
+// --------------------
+
+func TestRomanize_Greek(t *testing.T) {
+	result := Romanize("Γειά σου Κόσμε")
+	expected := "Geia sou Kosme"
+
+	if result != expected {
+		t.Errorf("Romanize(%q) = %q, expected %q", "Γειά σου Κόσμε", result, expected)
+	}
+}
+
+// --------------------
+// Arabic
+// --------------------
+
+func TestRomanize_Arabic(t *testing.T) {
+	result := Romanize("مرحبا بالعالم")
+	expected := "mrHb bl`lm"
+
+	if result != expected {
+		t.Errorf("Romanize(%q) = %q, expected %q", "مرحبا بالعالم", result, expected)
+	}
+}
+
+// --------------------
+// Hebrew
+// --------------------
+
+func TestRomanize_Hebrew(t *testing.T) {
+	result := Romanize("שלום עולם")
+	expected := "shlvm `vlm"
+
+	if result != expected {
+		t.Errorf("Romanize(%q) = %q, expected %q", "שלום עולם", result, expected)
+	}
+}
+
+// --------------------
+// Hindi (Devanagari)
+// --------------------
+
+func TestRomanize_Hindi(t *testing.T) {
+	result := Romanize("नमस्ते")
+	expected := "nmste"
+
+	if result != expected {
+		t.Errorf("Romanize(%q) = %q, expected %q", "नमस्ते", result, expected)
+	}
+}
+
+// --------------------
+// Thai
+// --------------------
+
+func TestRomanize_Thai(t *testing.T) {
+	result := Romanize("สวัสดี")
+	expected := "swasdii"
+
+	if result != expected {
+		t.Errorf("Romanize(%q) = %q, expected %q", "สวัสดี", result, expected)
+	}
+}
+
+// --------------------
+// Emoji / Symbols
+// --------------------
+
+func TestRomanize_Emoji(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected string
+	}{
+		{"🙂", ""},
+		{"Hello 🙂", "Hello"},
+	}
+
+	for _, tt := range tests {
+		result := Romanize(tt.input)
+		if result != tt.expected {
+			t.Errorf("Romanize(%q) = %q, expected %q", tt.input, result, tt.expected)
+		}
+	}
+}