Abort signature configuration if there is no key

Sometimes happens that there is no GPG key for the given email. In this
case, the configuration will be successfully completed.

#243

Author: extsoft

libexec/git-elegant-acquire-repository

@@ -46,7 +46,11 @@ default() {
     info-box "Configuring signature..."
     local listkeys="gpg --list-secret-keys --keyid-format long $(git config --local user.email)"
     command-text ${listkeys}
-    ${listkeys}
+    ${listkeys} 2>/dev/null || {
+        info-text "There is no gpg key for the given email."
+        info-text "A signature is not configured."
+        return 0
+    }
     info-text "From the list of GPG keys above, copy the GPG key ID you'd like to use."
     info-text "It will be"
     info-text "    3AA5C34371567BD2"

tests/git-elegant-acquire-repository.bats

@@ -157,3 +157,22 @@ teardown() {
     [[ ! ${lines[@]} =~ "==>> git config --local tag.gpgSign true" ]]
     [[ ! ${lines[@]} =~ "The signature is not configured as the empty key is provided." ]]
 }
+
+@test "'acquire-repository': does not configure a signature if there is no key for the email" {
+    read-answer "The User"
+    read-answer "the@email"
+    read-answer "someeditor"
+    read-answer ""
+    fake-fail "gpg --list-secret-keys --keyid-format long the@email" "gpg: error reading key: No secret key"
+    check git-elegant acquire-repository
+    [[ ${status} -eq 0 ]]
+    [[ ${lines[@]} =~ "Configuring signature..." ]]
+    [[ ${lines[@]} =~ "There is no gpg key for the given email." ]]
+    [[ ${lines[@]} =~ "A signature is not configured." ]]
+    [[ ! ${lines[@]} =~ "==>> git config --local user.signingkey" ]]
+    [[ ! ${lines[@]} =~ "==>> git config --local gpg.program /tmp/elegant-git-fakes/gpg" ]]
+    [[ ! ${lines[@]} =~ "==>> git config --local commit.gpgsign true" ]]
+    [[ ! ${lines[@]} =~ "==>> git config --local tag.forceSignAnnotated true" ]]
+    [[ ! ${lines[@]} =~ "==>> git config --local tag.gpgSign true" ]]
+    [[ ! ${lines[@]} =~ "The signature is not configured as the empty key is provided." ]]
+}