add unit tests for runtime/expressions - param (#145)

Author: agneum

pkg/runtime/expressions/param_test.go

@@ -0,0 +1,62 @@
+package expressions_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/MontFerret/ferret/pkg/runtime/core"
+	"github.com/MontFerret/ferret/pkg/runtime/expressions"
+	"github.com/MontFerret/ferret/pkg/runtime/values"
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+func TestNewParameterExpression(t *testing.T) {
+	Convey("Should create a parameter expression", t, func() {
+		sourceMap := core.NewSourceMap("test", 1, 1)
+		s, err := expressions.NewParameterExpression(sourceMap, "test")
+
+		So(err, ShouldBeNil)
+		So(s, ShouldHaveSameTypeAs, &expressions.ParameterExpression{})
+	})
+
+	Convey("Should not create a parameter expression with empty name", t, func() {
+		sourceMap := core.NewSourceMap("test", 1, 1)
+		s, err := expressions.NewParameterExpression(sourceMap, "")
+
+		So(err, ShouldNotBeNil)
+		So(err, ShouldHaveSameTypeAs, core.ErrMissedArgument)
+		So(s, ShouldBeNil)
+	})
+}
+
+func TestParameterExpressionExec(t *testing.T) {
+	Convey("Should exec an existing parameter expression", t, func() {
+		sourceMap := core.NewSourceMap("test", 1, 10)
+		existExp, err := expressions.NewParameterExpression(sourceMap, "param1")
+
+		params := make(map[string]core.Value)
+		params["param1"] = values.NewInt(1)
+
+		ctx := core.ParamsWith(context.Background(), params)
+		value, err := existExp.Exec(ctx, &core.Scope{})
+
+		So(err, ShouldBeNil)
+		So(value.Type(), ShouldEqual, core.IntType)
+		So(value.String(), ShouldEqual, "1")
+	})
+
+	Convey("Should not exec a missing parameter expression", t, func() {
+		sourceMap := core.NewSourceMap("test", 1, 10)
+		notExistExp, err := expressions.NewParameterExpression(sourceMap, "param2")
+
+		params := make(map[string]core.Value)
+		params["param1"] = values.NewInt(1)
+
+		ctx := core.ParamsWith(context.Background(), params)
+		value, err := notExistExp.Exec(ctx, &core.Scope{})
+
+		So(err, ShouldNotBeNil)
+		So(err, ShouldHaveSameTypeAs, core.ErrNotFound)
+		So(value.Type(), ShouldEqual, core.NoneType)
+	})
+}