Add core_tests.go

internal/miniredis/core_test.go

@@ -0,0 +1,169 @@
+//go:build test
+// +build test
+
+package miniredis
+
+import (
+	"bytes"
+	"testing"
+)
+
+func TestStringData_Type(t *testing.T) {
+	tests := []struct {
+		name string
+		data StringData
+		want MiniRedisDataType
+	}{
+		{
+			name: "empty string",
+			data: StringData{data: []byte("")},
+			want: Scalar,
+		},
+		{
+			name: "non-empty string",
+			data: StringData{data: []byte("hello")},
+			want: Scalar,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := tt.data.Type(); got != tt.want {
+				t.Errorf("StringData.Type() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestIntegerData_Type(t *testing.T) {
+	tests := []struct {
+		name string
+		data IntegerData
+		want MiniRedisDataType
+	}{
+		{
+			name: "zero",
+			data: IntegerData{data: 0},
+			want: Scalar,
+		},
+		{
+			name: "positive integer",
+			data: IntegerData{data: 42},
+			want: Scalar,
+		},
+		{
+			name: "negative integer",
+			data: IntegerData{data: -42},
+			want: Scalar,
+		},
+		{
+			name: "max int64",
+			data: IntegerData{data: 9223372036854775807},
+			want: Scalar,
+		},
+		{
+			name: "min int64",
+			data: IntegerData{data: -9223372036854775808},
+			want: Scalar,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := tt.data.Type(); got != tt.want {
+				t.Errorf("IntegerData.Type() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestStringData_Serialize(t *testing.T) {
+	tests := []struct {
+		name    string
+		data    StringData
+		want    []byte
+		wantErr bool
+	}{
+		{
+			name: "empty string",
+			data: StringData{data: []byte("")},
+			want: []byte("$0\r\n\r\n"),
+		},
+		{
+			name: "simple string",
+			data: StringData{data: []byte("hello")},
+			want: []byte("$5\r\nhello\r\n"),
+		},
+		{
+			name: "string with spaces",
+			data: StringData{data: []byte("hello world")},
+			want: []byte("$11\r\nhello world\r\n"),
+		},
+		{
+			name: "string with special characters",
+			data: StringData{data: []byte("hello\nworld")},
+			want: []byte("$11\r\nhello\nworld\r\n"),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := tt.data.Serialize()
+			if (err != nil) != tt.wantErr {
+				t.Errorf("StringData.Serialize() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !bytes.Equal(got, tt.want) {
+				t.Errorf("StringData.Serialize() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestIntegerData_Serialize(t *testing.T) {
+	tests := []struct {
+		name    string
+		data    IntegerData
+		want    []byte
+		wantErr bool
+	}{
+		{
+			name: "zero",
+			data: IntegerData{data: 0},
+			want: []byte(":0\r\n"),
+		},
+		{
+			name: "positive integer",
+			data: IntegerData{data: 42},
+			want: []byte(":42\r\n"),
+		},
+		{
+			name: "negative integer",
+			data: IntegerData{data: -42},
+			want: []byte(":-42\r\n"),
+		},
+		{
+			name: "max int64",
+			data: IntegerData{data: 9223372036854775807},
+			want: []byte(":9223372036854775807\r\n"),
+		},
+		{
+			name: "min int64",
+			data: IntegerData{data: -9223372036854775808},
+			want: []byte(":-9223372036854775808\r\n"),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := tt.data.Serialize()
+			if (err != nil) != tt.wantErr {
+				t.Errorf("IntegerData.Serialize() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !bytes.Equal(got, tt.want) {
+				t.Errorf("IntegerData.Serialize() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}