add unit tests

lib/verifiers/sha256_asset_verifier_test.go

@@ -84,4 +84,8 @@ var _ = Describe("Sha256AssetVerifier", func() {
 			Expect(newVerifier).ShouldNot(BeNil())
 		})
 	})
+
+	It("should return the correct asset", func() {
+		Expect(verifier.GetAsset()).To(Equal(&asset))
+	})
 })

lib/verifiers/sha256_sum_file_asset_verifier_test.go

@@ -64,4 +64,12 @@ var _ = Describe("Sha256SumFileAssetVerifier", func() {
 			})
 		})
 	})
+
+	It("should return a string representation of the verifier", func() {
+		Expect(verifier.String()).To(Equal("checksum verified with https://example.com/sha256sums.txt"))
+	})
+
+	It("should return the correct asset", func() {
+		Expect(verifier.GetAsset()).To(Equal(asset))
+	})
 })

lib/verifiers/sha256_verifier.go

@@ -25,6 +25,7 @@ func NewSha256Verifier(client download.ClientContract, expectedHex string) (*Sha
 	return &Sha256Verifier{
 		client:   client,
 		Expected: expected,
+		Asset:    nil,
 	}, nil
 }
 

lib/verifiers/sha256_verifier_test.go

@@ -67,4 +67,20 @@ var _ = Describe("Sha256Verifier", func() {
 			Expect(err).ToNot(BeNil())
 		})
 	})
+
+	It("should return a string representation of the verifier", func() {
+		expectedHex := sha256.Sum256([]byte("test"))
+		hexString := hex.EncodeToString(expectedHex[:])
+		v, _ := verifiers.NewSha256Verifier(mockClient, hexString)
+
+		Expect(v.String()).To(Equal("sha256:" + hexString))
+	})
+
+	It("should return the correct asset", func() {
+		expectedHex := sha256.Sum256([]byte("test"))
+		hexString := hex.EncodeToString(expectedHex[:])
+		v, _ := verifiers.NewSha256Verifier(mockClient, hexString)
+
+		Expect(v.GetAsset()).To(BeNil())
+	})
 })