70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
package shared_test
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import (
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"errors"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"github.com/vulcanize/vulcanizedb/libraries/shared"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
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)
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type MockTransformer struct {
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executeWasCalled bool
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executeError error
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}
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func (mh *MockTransformer) Execute() error {
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if mh.executeError != nil {
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return mh.executeError
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}
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mh.executeWasCalled = true
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return nil
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}
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func fakeTransformerInitializer(db *postgres.DB, blockchain core.Blockchain) shared.Transformer {
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return &MockTransformer{}
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}
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var _ = Describe("Watcher", func() {
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It("Adds transformers", func() {
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watcher := shared.Watcher{}
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watcher.AddTransformers([]shared.TransformerInitializer{fakeTransformerInitializer})
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Expect(len(watcher.Transformers)).To(Equal(1))
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Expect(watcher.Transformers).To(ConsistOf(&MockTransformer{}))
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})
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It("Adds transformers from multiple sources", func() {
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watcher := shared.Watcher{}
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watcher.AddTransformers([]shared.TransformerInitializer{fakeTransformerInitializer})
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watcher.AddTransformers([]shared.TransformerInitializer{fakeTransformerInitializer})
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Expect(len(watcher.Transformers)).To(Equal(2))
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})
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It("Executes each transformer", func() {
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watcher := shared.Watcher{}
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fakeTransformer := &MockTransformer{}
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watcher.Transformers = []shared.Transformer{fakeTransformer}
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watcher.Execute()
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Expect(fakeTransformer.executeWasCalled).To(BeTrue())
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})
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It("Returns an error if transformer returns an error", func() {
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watcher := shared.Watcher{}
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fakeTransformer := &MockTransformer{executeError: errors.New("Something bad happened")}
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watcher.Transformers = []shared.Transformer{fakeTransformer}
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err := watcher.Execute()
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Expect(err).To(HaveOccurred())
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Expect(fakeTransformer.executeWasCalled).To(BeFalse())
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})
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})
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