✅ Add tests for New

ezcache_test.go

@@ -0,0 +1,44 @@
+package ezcache_test
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	"codeberg.org/danjones000/ezcache"
+	"github.com/stretchr/testify/assert"
+)
+
+var fetcher ezcache.Fetcher[uint8, string] = func(key uint8) (string, error) { return fmt.Sprintf("%d", key), nil }
+
+func TestNewHappy(t *testing.T) {
+	cache, err := ezcache.New(fetcher, 1)
+
+	assert.NoError(t, err)
+	assert.NotNil(t, cache)
+}
+
+func TestNewNilFetcher(t *testing.T) {
+	cache, err := ezcache.New[uint8, string](nil, 1)
+
+	assert.ErrorIs(t, err, ezcache.ErrInvalidFetcher)
+	assert.Nil(t, cache)
+}
+
+func TestNewBadExpiry(tt *testing.T) {
+	testcases := []struct {
+		name string
+		exp  time.Duration
+	}{
+		{"zero", 0},
+		{"negative", -5},
+	}
+	for _, tc := range testcases {
+		tt.Run(tc.name, func(t *testing.T) {
+			cache, err := ezcache.New(fetcher, tc.exp)
+
+			assert.ErrorIs(t, err, ezcache.ErrInvalidExpiry)
+			assert.Nil(t, cache)
+		})
+	}
+}