fix: log errors once

cmd/gitmono/main.go

@@ -85,10 +85,11 @@ func run() int {
 		}
 	}
 
-	// parse options and trigger command
+	// parse options to trigger command
+	// errors are logged by the flags library
 	_, err = flagsParser.Parse()
-	if exit, code := checkError(err); exit {
-		return code
+	if err != nil {
+		return 1
 	}
 	return 0
 }

cmd/gitmono/main_cmd_test.go

@@ -11,6 +11,9 @@ import (
 )
 
 // TestCommand uses google/go-cmdtest to run commands and verify output
+//
+// Use UPDATE_TESTDATA=true to perform update of testdata file from test output.
+// By default go-cmdtest runs in compare mode which compares testdata with actual test output.
 func TestCommand(t *testing.T) {
 	t.Parallel()
 
@@ -56,7 +59,7 @@ func TestCommand(t *testing.T) {
 		assert.Nil(t, err)
 
 		ts.Commands["gitmono"] = cmdtest.InProcessProgram("gitmono", run)
-		ts.Run(t, false)
+		ts.Run(t, isUpdateTestdataMode())
 	}
 }
 
@@ -68,7 +71,13 @@ func TestCommandFailures(t *testing.T) {
 	assert.Nil(t, err)
 
 	ts.Commands["gitmono"] = cmdtest.InProcessProgram("gitmono", run)
-	ts.Run(t, false)
+	ts.Run(t, isUpdateTestdataMode())
+}
+
+func isUpdateTestdataMode() bool {
+	updateMode, found := os.LookupEnv("UPDATE_TESTDATA")
+	return found && updateMode == "true"
+
 }
 
 func setupRepo(t *testing.T) func() {

cmd/gitmono/testdata/diff/diff.ct

@@ -27,23 +27,3 @@ Help Options:
     diff:
       -f=               The starting point of reference range
       -t=               The ending point of reference range (default: HEAD)
-
-Usage:
-  gitmono [OPTIONS] diff [diff-OPTIONS]
-
-Application Options:
-  -p=                   The project directory to operate on (default: .)
-  -v                    Enable verbose loggging
-      --dry-run         Do not persist any write action
-      --commit-scheme=  The scheme parse commit messages with (common,
-                        conventional) (default: conventional)
-      --version-prefix= The prefix to prepend to version
-
-Help Options:
-  -h, --help            Show this help message
-
-[diff command options]
-
-    diff:
-      -f=               The starting point of reference range
-      -t=               The ending point of reference range (default: HEAD)

cmd/gitmono/testdata/help/help.ct

@@ -19,24 +19,3 @@ Available commands:
   log
   release
   version
-
-Usage:
-  gitmono [OPTIONS] <command>
-
-Application Options:
-  -p=                   The project directory to operate on (default: .)
-  -v                    Enable verbose loggging
-      --dry-run         Do not persist any write action
-      --commit-scheme=  The scheme parse commit messages with (common,
-                        conventional) (default: conventional)
-      --version-prefix= The prefix to prepend to version
-
-Help Options:
-  -h, --help            Show this help message
-
-Available commands:
-  diff
-  init
-  log
-  release
-  version

cmd/gitmono/testdata/init/init.ct

@@ -26,24 +26,3 @@ Help Options:
       -c=               The commit ID to release initial versions on (default:
                         HEAD)
           --print-tag   Print tag instead of version
-
-Usage:
-  gitmono [OPTIONS] init [init-OPTIONS]
-
-Application Options:
-  -p=                   The project directory to operate on (default: .)
-  -v                    Enable verbose loggging
-      --dry-run         Do not persist any write action
-      --commit-scheme=  The scheme parse commit messages with (common,
-                        conventional) (default: conventional)
-      --version-prefix= The prefix to prepend to version
-
-Help Options:
-  -h, --help            Show this help message
-
-[init command options]
-
-    init:
-      -c=               The commit ID to release initial versions on (default:
-                        HEAD)
-          --print-tag   Print tag instead of version

cmd/gitmono/testdata/log/log.ct

@@ -27,23 +27,3 @@ Help Options:
     log:
       -f=               The starting point of reference range
       -t=               The ending point of reference range (default: HEAD)
-
-Usage:
-  gitmono [OPTIONS] log [log-OPTIONS]
-
-Application Options:
-  -p=                   The project directory to operate on (default: .)
-  -v                    Enable verbose loggging
-      --dry-run         Do not persist any write action
-      --commit-scheme=  The scheme parse commit messages with (common,
-                        conventional) (default: conventional)
-      --version-prefix= The prefix to prepend to version
-
-Help Options:
-  -h, --help            Show this help message
-
-[log command options]
-
-    log:
-      -f=               The starting point of reference range
-      -t=               The ending point of reference range (default: HEAD)

cmd/gitmono/testdata/release/release.ct

@@ -1,6 +1,5 @@
 $ gitmono release -p project-released --> FAIL
 no commits to release
-no commits to release
 
 $ gitmono release -p project-breaking-change --version-prefix=v -c HEAD --dry-run
 v1.0.0
@@ -33,23 +32,3 @@ Help Options:
     release:
       -c=               The commit ID to release versions on (default: HEAD)
           --print-tag   Print tag instead of version
-
-Usage:
-  gitmono [OPTIONS] release [release-OPTIONS]
-
-Application Options:
-  -p=                   The project directory to operate on (default: .)
-  -v                    Enable verbose loggging
-      --dry-run         Do not persist any write action
-      --commit-scheme=  The scheme parse commit messages with (common,
-                        conventional) (default: conventional)
-      --version-prefix= The prefix to prepend to version
-
-Help Options:
-  -h, --help            Show this help message
-
-[release command options]
-
-    release:
-      -c=               The commit ID to release versions on (default: HEAD)
-          --print-tag   Print tag instead of version

cmd/gitmono/testdata/version/version.ct

@@ -29,23 +29,3 @@ Help Options:
     version:
           --print-tag     Print the tag of the current version
           --print-commit  Print the commit of the current version
-
-Usage:
-  gitmono [OPTIONS] version [version-OPTIONS]
-
-Application Options:
-  -p=                     The project directory to operate on (default: .)
-  -v                      Enable verbose loggging
-      --dry-run           Do not persist any write action
-      --commit-scheme=    The scheme parse commit messages with (common,
-                          conventional) (default: conventional)
-      --version-prefix=   The prefix to prepend to version
-
-Help Options:
-  -h, --help              Show this help message
-
-[version command options]
-
-    version:
-          --print-tag     Print the tag of the current version
-          --print-commit  Print the commit of the current version

pkg/gitmono/commit_parse_test.go

@@ -96,6 +96,13 @@ func Test_conventionalCommitParse(t *testing.T) {
 			},
 			want: majorBumper,
 		},
+		{
+			name: "use breaking change with exclamation",
+			args: args{
+				msg: "fix!: bug that introduces breaking API change\nAPI change",
+			},
+			want: majorBumper,
+		},
 		{
 			name: "feature implmenentation",
 			args: args{