test(version): add tests for version information

Add unit tests to verify that Version is set and note that Commit and BuildDate may be empty in development builds.

Update .gitignore to ignore the .junie/ directory.

.gitignore

@@ -1,4 +1,5 @@
 .idea/
+.junie/
 build/
 grokkit
 *.bak

internal/version/version_test.go

@@ -0,0 +1,39 @@
+package version
+
+import "testing"
+
+func TestVersionInfo(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name  string
+		check func(*testing.T)
+	}{
+		{
+			name: "Version",
+			check: func(t *testing.T) {
+				if Version == "" {
+					t.Error("Version should be set")
+				}
+			},
+		},
+		{
+			name: "Commit",
+			check: func(t *testing.T) {
+				// Commit can be empty in dev builds
+			},
+		},
+		{
+			name: "BuildDate",
+			check: func(t *testing.T) {
+				// BuildDate can be empty in dev builds
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.check(t)
+		})
+	}
+}