Add generated help and version commands

builtins_test.go

@@ -0,0 +1,58 @@
+package commandkit
+
+import (
+	"runtime/debug"
+	"testing"
+)
+
+func TestCommandKitBuildIdentityProjectsEffectiveModuleVersion(t *testing.T) {
+	tests := []struct {
+		name string
+		info *debug.BuildInfo
+		want string
+	}{
+		{
+			name: "main module tag",
+			info: &debug.BuildInfo{Main: debug.Module{Path: commandKitModulePath, Version: "v1.2.3"}},
+			want: "v1.2.3",
+		},
+		{
+			name: "dependency tag",
+			info: &debug.BuildInfo{Main: debug.Module{Path: "example.com/application", Version: "v4.0.0"}, Deps: []*debug.Module{{Path: commandKitModulePath, Version: "v1.2.3"}}},
+			want: "v1.2.3",
+		},
+		{
+			name: "versioned replacement",
+			info: &debug.BuildInfo{Main: debug.Module{Path: "example.com/application"}, Deps: []*debug.Module{{Path: commandKitModulePath, Version: "v1.2.3", Replace: &debug.Module{Path: "example.com/fork", Version: "v2.0.0"}}}},
+			want: "v2.0.0",
+		},
+		{
+			name: "local replacement",
+			info: &debug.BuildInfo{Main: debug.Module{Path: commandKitModulePath, Version: "v1.2.3", Replace: &debug.Module{Path: "../CommandKit"}}},
+			want: "dev",
+		},
+		{
+			name: "development module",
+			info: &debug.BuildInfo{Main: debug.Module{Path: commandKitModulePath, Version: "(devel)"}},
+			want: "dev",
+		},
+		{
+			name: "missing module",
+			info: &debug.BuildInfo{Main: debug.Module{Path: "example.com/application"}},
+			want: "dev",
+		},
+		{
+			name: "missing build info",
+			info: nil,
+			want: "dev",
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			identity := commandKitBuildIdentity(test.info)
+			if identity.Name != "CommandKit" || identity.Version != test.want || identity.Revision != "" {
+				t.Fatalf("identity = %#v, want CommandKit %q with no revision", identity, test.want)
+			}
+		})
+	}
+}