feature: new rule identical-switch-conditions (#1451)

testdata/identical_switch_conditions.go

@@ -0,0 +1,55 @@
+package fixtures
+
+func enforceSwitchStyle3() {
+
+	switch expression { // skipt tagged switch
+	case value:
+	default:
+	}
+
+	switch {
+	case a > 0, a < 0:
+	case a == 0:
+	case a < 0: // MATCH /case clause at line 11 has the same condition/
+	default:
+	}
+
+	switch {
+	case a > 0, a < 0, a > 0: // MATCH /case clause at line 18 has the same condition/
+	case a == 0:
+	case a < 0: // MATCH /case clause at line 18 has the same condition/
+	default:
+	}
+
+	switch something {
+	case 1:
+		switch {
+		case a > 0, a < 0, a > 0: // MATCH /case clause at line 27 has the same condition/
+		case a == 0:
+		}
+	default:
+	}
+
+	switch {
+	case a == 0:
+		switch {
+		case a > 0, a < 0, a > 0: // MATCH /case clause at line 36 has the same condition/
+		case a == 0:
+		}
+	default:
+	}
+
+	switch {
+	case lnOpts.IsSocketOpts():
+		// ...
+		// check for timeout
+		fallthrough
+	case lnOpts.IsTimeout(), lnOpts.IsSocketOpts(): // MATCH /case clause at line 43 has the same condition/
+		// timeout listener with socket options.
+		// ...
+	case lnOpts.IsTimeout(): // MATCH /case clause at line 47 has the same condition/
+		// ...
+	default:
+		// ...
+	}
+}