Added a bunch more tests

util/util_test.go

@@ -26,3 +26,53 @@ func TestUnaliasPath(t *testing.T) {
 		}
 	}
 }
+
+func TestUniqueStrings(t *testing.T) {
+	tests := []struct {
+		strings []string
+		len     int
+	}{
+		{[]string{"a", "b", "c"}, 3},
+		{[]string{"a", "a", "a"}, 1},
+	}
+
+	for _, tt := range tests {
+		if len(UniqueStrings(tt.strings)) != tt.len {
+			t.Fatalf("expected %d, got %d", tt.len, len(UniqueStrings(tt.strings)))
+		}
+	}
+}
+
+func TestContains(t *testing.T) {
+	tests := []struct {
+		strings  []string
+		match    string
+		expected bool
+	}{
+		{[]string{"a", "b", "c"}, "a", true},
+		{[]string{"a", "a", "a"}, "d", false},
+	}
+
+	for _, tt := range tests {
+		if tt.expected != Contains(tt.strings, tt.match) {
+			t.Fatalf("expected %v", tt.expected)
+		}
+	}
+}
+
+func TestIsNumber(t *testing.T) {
+	tests := []struct {
+		number   string
+		expected bool
+	}{
+		{"12", true},
+		{"12a", false},
+		{"12.2", true},
+	}
+
+	for _, tt := range tests {
+		if tt.expected != IsNumber(tt.number) {
+			t.Fatalf("expected %v (%s)", tt.expected, tt.number)
+		}
+	}
+}