Issue #42 - Add unit tests for api-tools/parser/section/requisiteParser [In-Progress]

parser/requisiteParser_test.go

@@ -0,0 +1,87 @@
+package parser
+
+import "testing"
+
+func TestInitMatchers(t *testing.T) {
+	// Test 1: Initialization
+	Matchers = nil
+	initMatchers()
+
+	if Matchers == nil {
+		t.Error("Matchers should not be nil after initialization")
+	}
+
+	if Matchers == nil {
+		t.Error("Matchers contain matchers after initialization")
+	}
+
+	// Test 2: No regex compilation errors
+	for i, m := range Matchers {
+		if m.Regex == nil {
+			t.Errorf("Matcher %d has nil regex", i)
+		}
+	}
+}
+
+func TestGroupParens(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+		groups   []string
+	}{
+		{
+			name:     "No parentheses",
+			input:    "MATH 2417 and PHYS 2125",
+			expected: "MATH 2417 and PHYS 2125",
+			groups:   []string{},
+		},
+		{
+			name:     "Single parentheses",
+			input:    "MATH 2417 and (PHYS 2125 or PHYS 2126)",
+			expected: "MATH 2417 and @0",
+			groups:   []string{"PHYS 2125 or PHYS 2126"},
+		},
+		{
+			name:     "Nested parentheses",
+			input:    "((A and B) or (C and D))",
+			expected: "@0",
+			groups:   []string{"@1 or @2", "A and B", "C and D"},
+		},
+		{
+			name:     "Multiple parentheses",
+			input:    "(A) and (B) or (C)",
+			expected: "@0 and @1 or @2",
+			groups:   []string{"A", "B", "C"},
+		},
+		{
+			name:     "Mismatched closing parentheses",
+			input:    "(A and B)) extra text",
+			expected: "@0 extra text",
+			groups:   []string{"A and B"},
+		},
+		{
+			name:     "Complex expression",
+			input:    "MATH 2417 and (PHYS 2125 or (PHYS 2126 and CHEM 1311))",
+			expected: "MATH 2417 and @0",
+			groups:   []string{"PHYS 2125 or @1", "PHYS 2126 and CHEM 1311"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result, groups := groupParens(tt.input)
+			if result != tt.expected {
+				t.Errorf("groupParens() = %q, want %q", result, tt.expected)
+			}
+			if len(groups) != len(tt.groups) {
+				t.Errorf("group count = %d, want %d", len(groups), len(tt.groups))
+			}
+			for i, group := range groups {
+				if i < len(tt.groups) && group != tt.groups[i] {
+					t.Errorf("group[%d] = %q, want %q", i, group, tt.groups[i])
+				}
+			}
+		})
+	}
+}