Make wrapper work for simple usecase

test/test-wrapper

@@ -0,0 +1,202 @@
+#!/usr/bin/env bash
+
+testWrapperDownloadsFromLinuxUrlOnLinux() {
+  mock curl
+  mock uname Linux
+
+  echo '
+  #!/usr/bin/env bash
+
+  somethingw() {
+    _wrapper \
+      -l http://something/linux
+  }
+
+  ⚡hello() { somethingw ; }
+  ' > go
+
+  echo "source $REPO_ROOT/⚡" >> go
+  chmod +x go
+
+  try ./go hello
+
+  assertCalledWithArguments curl http://something/linux
+}
+
+testWrapperHasCurlFollowLocationHeader() {
+  mock curl
+  mock uname Linux
+
+  echo '
+  #!/usr/bin/env bash
+
+  somethingw() {
+    _wrapper \
+      -l http://something/linux
+  }
+
+  ⚡hello() { somethingw ; }
+  ' > go
+
+  echo "source $REPO_ROOT/⚡" >> go
+  chmod +x go
+
+  try ./go hello
+
+  assertCalledWithArguments curl --location
+}
+
+
+testWrapperDownloadsFromDarwinUrlOnDarwin() {
+  mock curl
+  mock uname Darwin
+
+  echo '
+  #!/usr/bin/env bash
+
+  somethingw() {
+    _wrapper \
+      -d http://something/darwin
+  }
+
+  ⚡hello() { somethingw ; }
+  ' > go
+
+  echo "source $REPO_ROOT/⚡" >> go
+  chmod +x go
+
+  try ./go hello
+  assertCalledWithArguments curl http://something/darwin
+}
+
+testWrapperSubstitutesVERSIONInUrl() {
+  mock curl
+  mock uname Darwin
+
+  echo '
+  #!/usr/bin/env bash
+
+  somethingw() {
+    _wrapper \
+      -v 1337 \
+      -d http://something/VERSION/darwin
+  }
+
+  ⚡hello() { somethingw ; }
+  ' > go
+
+  echo "source $REPO_ROOT/⚡" >> go
+  chmod +x go
+
+  try ./go hello
+  assertCalledWithArguments curl http://something/1337/darwin
+}
+
+testWrapperRunsDownloadedBinary() {
+  mock curl '#!/usr/bin/env bash
+  printf "Hello "
+  printf "friend"
+  '
+  mock uname Darwin
+
+  echo '
+  #!/usr/bin/env bash
+
+  somethingw() {
+    _wrapper \
+      -d http://something/darwin
+  }
+
+  ⚡hello() { somethingw ; }
+  ' > go
+
+  echo "source $REPO_ROOT/⚡" >> go
+  chmod +x go
+
+
+  try ./go hello
+  assertContains "$STDOUT" "Hello friend"
+}
+
+testWrapperPersistsBinaryInLocationBasedOnNameAndVersion() {
+  mock curl '#!/usr/bin/env true
+  potato
+  '
+  mock uname Darwin
+
+  echo '
+  #!/usr/bin/env bash
+
+  somethingw() {
+    _wrapper \
+      -n something \
+      -v 1337 \
+      -d http://something/darwin
+  }
+
+  ⚡hello() { somethingw ; }
+  ' > go
+
+  echo "source $REPO_ROOT/⚡" >> go
+  chmod +x go
+
+  try ./go hello
+  assertContains "$(<.generated/wrapper/something/1337/bin)" potato
+}
+
+testWrapperDoesNotRedownloadBinaryIfPresent() {
+  mock curl 'whatever'
+  mock uname Darwin
+
+  echo '
+  #!/usr/bin/env bash
+
+  somethingw() {
+    _wrapper \
+      -n something \
+      -v 1337 \
+      -d http://something/darwin
+  }
+
+  ⚡hello() { somethingw ; }
+  ' > go
+
+  echo "source $REPO_ROOT/⚡" >> go
+  chmod +x go
+
+  mkdir -p .generated/wrapper/something/1337/
+  touch .generated/wrapper/something/1337/bin
+  try ./go hello
+  assertNotCalled curl
+  assertNotContains "$(<.generated/wrapper/something/1337/bin)" potato
+}
+
+testWrapperPassesArgumentsToExecutedBinary() {
+  mock curl '#!/usr/bin/env bash
+  echo "$@"
+  '
+  mock uname Darwin
+
+  echo '
+  #!/usr/bin/env bash
+
+  somethingw() {
+    _wrapper \
+      -n something \
+      -v 1337 \
+      -d http://something/darwin \
+      -- \
+      "$@"
+  }
+
+  ⚡hello() { somethingw Hello friend ; }
+  ' > go
+
+  echo "source $REPO_ROOT/⚡" >> go
+  chmod +x go
+
+  try ./go hello
+  assertContains "$STDOUT" "Hello friend"
+}
+
+source $(dirname $0)/runner