fix: add support for context sensitive readers

Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>

readerio/reader_test.go

@@ -0,0 +1,29 @@
+package readerio
+
+import (
+	"context"
+	"testing"
+
+	F "github.com/ibm/fp-go/function"
+	"github.com/ibm/fp-go/internal/utils"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestMap(t *testing.T) {
+
+	g := F.Pipe1(
+		Of[context.Context](1),
+		Map[context.Context](utils.Double),
+	)
+
+	assert.Equal(t, 2, g(context.Background())())
+}
+
+func TestAp(t *testing.T) {
+	g := F.Pipe1(
+		Of[context.Context](utils.Double),
+		Ap[int](Of[context.Context](1)),
+	)
+
+	assert.Equal(t, 2, g(context.Background())())
+}