| // Copyright 2017 Docker, Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package digest |
| |
| import ( |
| "testing" |
| ) |
| |
| func TestParseDigest(t *testing.T) { |
| for _, testcase := range []struct { |
| input string |
| err error |
| algorithm Algorithm |
| encoded string |
| }{ |
| { |
| input: "sha256:e58fcf7418d4390dec8e8fb69d88c06ec07039d651fedd3aa72af9972e7d046b", |
| algorithm: "sha256", |
| encoded: "e58fcf7418d4390dec8e8fb69d88c06ec07039d651fedd3aa72af9972e7d046b", |
| }, |
| { |
| input: "sha384:d3fc7881460b7e22e3d172954463dddd7866d17597e7248453c48b3e9d26d9596bf9c4a9cf8072c9d5bad76e19af801d", |
| algorithm: "sha384", |
| encoded: "d3fc7881460b7e22e3d172954463dddd7866d17597e7248453c48b3e9d26d9596bf9c4a9cf8072c9d5bad76e19af801d", |
| }, |
| { |
| // empty hex |
| input: "sha256:", |
| err: ErrDigestInvalidFormat, |
| }, |
| { |
| // empty hex |
| input: ":", |
| err: ErrDigestInvalidFormat, |
| }, |
| { |
| // just hex |
| input: "d41d8cd98f00b204e9800998ecf8427e", |
| err: ErrDigestInvalidFormat, |
| }, |
| { |
| // not hex |
| input: "sha256:d41d8cd98f00b204e9800m98ecf8427e", |
| err: ErrDigestInvalidLength, |
| }, |
| { |
| // too short |
| input: "sha256:abcdef0123456789", |
| err: ErrDigestInvalidLength, |
| }, |
| { |
| // too short (from different algorithm) |
| input: "sha512:abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789", |
| err: ErrDigestInvalidLength, |
| }, |
| { |
| input: "foo:d41d8cd98f00b204e9800998ecf8427e", |
| err: ErrDigestUnsupported, |
| }, |
| { |
| // repeated separators |
| input: "sha384__foo+bar:d3fc7881460b7e22e3d172954463dddd7866d17597e7248453c48b3e9d26d9596bf9c4a9cf8072c9d5bad76e19af801d", |
| err: ErrDigestInvalidFormat, |
| }, |
| { |
| // ensure that we parse, but we don't have support for the algorithm |
| input: "sha384.foo+bar:d3fc7881460b7e22e3d172954463dddd7866d17597e7248453c48b3e9d26d9596bf9c4a9cf8072c9d5bad76e19af801d", |
| algorithm: "sha384.foo+bar", |
| encoded: "d3fc7881460b7e22e3d172954463dddd7866d17597e7248453c48b3e9d26d9596bf9c4a9cf8072c9d5bad76e19af801d", |
| err: ErrDigestUnsupported, |
| }, |
| { |
| input: "sha384_foo+bar:d3fc7881460b7e22e3d172954463dddd7866d17597e7248453c48b3e9d26d9596bf9c4a9cf8072c9d5bad76e19af801d", |
| algorithm: "sha384_foo+bar", |
| encoded: "d3fc7881460b7e22e3d172954463dddd7866d17597e7248453c48b3e9d26d9596bf9c4a9cf8072c9d5bad76e19af801d", |
| err: ErrDigestUnsupported, |
| }, |
| { |
| input: "sha256+b64:LCa0a2j_xo_5m0U8HTBBNBNCLXBkg7-g-YpeiGJm564", |
| algorithm: "sha256+b64", |
| encoded: "LCa0a2j_xo_5m0U8HTBBNBNCLXBkg7-g-YpeiGJm564", |
| err: ErrDigestUnsupported, |
| }, |
| { |
| input: "sha256:E58FCF7418D4390DEC8E8FB69D88C06EC07039D651FEDD3AA72AF9972E7D046B", |
| err: ErrDigestInvalidFormat, |
| }, |
| } { |
| digest, err := Parse(testcase.input) |
| if err != testcase.err { |
| t.Fatalf("error differed from expected while parsing %q: %v != %v", testcase.input, err, testcase.err) |
| } |
| |
| if testcase.err != nil { |
| continue |
| } |
| |
| if digest.Algorithm() != testcase.algorithm { |
| t.Fatalf("incorrect algorithm for parsed digest: %q != %q", digest.Algorithm(), testcase.algorithm) |
| } |
| |
| if digest.Encoded() != testcase.encoded { |
| t.Fatalf("incorrect hex for parsed digest: %q != %q", digest.Encoded(), testcase.encoded) |
| } |
| |
| // Parse string return value and check equality |
| newParsed, err := Parse(digest.String()) |
| |
| if err != nil { |
| t.Fatalf("unexpected error parsing input %q: %v", testcase.input, err) |
| } |
| |
| if newParsed != digest { |
| t.Fatalf("expected equal: %q != %q", newParsed, digest) |
| } |
| |
| newFromHex := NewDigestFromEncoded(newParsed.Algorithm(), newParsed.Encoded()) |
| if newFromHex != digest { |
| t.Fatalf("%v != %v", newFromHex, digest) |
| } |
| } |
| } |