Test types.Float#MarshalJSON()

Author: Al2Klimov

types/float_test.go

@@ -0,0 +1,30 @@
+package types
+
+import (
+	"database/sql"
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func TestFloat_MarshalJSON(t *testing.T) {
+	subtests := []struct {
+		name   string
+		input  sql.NullFloat64
+		output string
+	}{
+		{"null", sql.NullFloat64{}, `null`},
+		{"invalid", sql.NullFloat64{Float64: 42}, `null`},
+		{"zero", sql.NullFloat64{Float64: 0, Valid: true}, `0`},
+		{"negative", sql.NullFloat64{Float64: -1, Valid: true}, `-1`},
+		{"fraction", sql.NullFloat64{Float64: 0.5, Valid: true}, `0.5`},
+	}
+
+	for _, st := range subtests {
+		t.Run(st.name, func(t *testing.T) {
+			actual, err := Float{st.input}.MarshalJSON()
+
+			require.NoError(t, err)
+			require.Equal(t, st.output, string(actual))
+		})
+	}
+}