A lot more tests

pkg/restheadspec/headers_test.go

@@ -0,0 +1,46 @@
+package restheadspec
+
+import (
+	"testing"
+)
+
+func TestDecodeHeaderValue(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{
+			name:     "Normal string",
+			input:    "test",
+			expected: "test",
+		},
+		{
+			name:     "String without encoding prefix",
+			input:    "hello world",
+			expected: "hello world",
+		},
+		{
+			name:     "Empty string",
+			input:    "",
+			expected: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := decodeHeaderValue(tt.input)
+			if result != tt.expected {
+				t.Errorf("Expected '%s', got '%s'", tt.expected, result)
+			}
+		})
+	}
+}
+
+// Note: The following functions are unexported (lowercase) and cannot be tested directly:
+// - parseSelectFields
+// - parseFieldFilter
+// - mapSearchOperator
+// - parseCommaSeparated
+// - parseSorting
+// These are tested indirectly through parseOptionsFromHeaders in query_params_test.go