Add projects

backend/internal/pluginstore/version_test.go

@@ -0,0 +1,34 @@
+package pluginstore
+
+import "testing"
+
+func TestUpdateAvailable(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name      string
+		installed string
+		latest    string
+		want      bool
+	}{
+		{name: "unknown installed", installed: "", latest: "0.2.0", want: false},
+		{name: "same version", installed: "0.1.0", latest: "0.1.0", want: false},
+		{name: "same version with v prefix", installed: "v0.1.0", latest: "0.1.0", want: false},
+		{name: "newer registry version", installed: "0.1.0", latest: "0.2.0", want: true},
+		{name: "newer registry version with v prefix", installed: "v0.1.0", latest: "0.2.0", want: true},
+		{name: "numeric not lexicographic", installed: "0.1.9", latest: "0.1.10", want: true},
+		{name: "installed newer than registry", installed: "0.2.0", latest: "0.1.0", want: false},
+		{name: "missing segments treated as zero", installed: "0.1", latest: "0.1.0", want: false},
+		{name: "prerelease falls back to inequality", installed: "0.1.0-rc1", latest: "0.1.0", want: true},
+		{name: "non numeric falls back to inequality", installed: "dev", latest: "0.1.0", want: true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+
+			if got := UpdateAvailable(tt.installed, tt.latest); got != tt.want {
+				t.Fatalf("UpdateAvailable(%q, %q) = %v, want %v", tt.installed, tt.latest, got, tt.want)
+			}
+		})
+	}
+}