==== tests/cases/compiler/interfaceInheritance.ts (4 errors) ====
    interface I1 {
        i1P1: number;
        i1P2(): void;
    }
    
    interface I2 extends I1 {
        i2P1: string;
    }
    
    interface I3 {
        i2P1: string; // has a member from i2P1, but not from I1
    }
    
    interface I4 {
    	one: number;
    }
    
    interface I5 {
    	one: string;
    }
    
    class C1 implements I2 { // should be an error - it doesn't implement the members of I1
          ~~
!!! Class 'C1' incorrectly implements interface 'I2':
!!!   Property 'i1P1' is missing in type 'C1'.
        public i2P1: string;
    }
    
    var i2: I2;
    var i1: I1;
    var i3: I3;
    i1 = i2;
    i2 = i3; // should be an error - i3 does not implement the members of i1
    ~~
!!! Type 'I3' is not assignable to type 'I2':
!!!   Property 'i1P1' is missing in type 'I3'.
    
    var c1: C1;
    
    var i4: I4;
    var i5: I5;
    
    i4 = i5; // should be an error
    ~~
!!! Type 'I5' is not assignable to type 'I4':
!!!   Types of property 'one' are incompatible:
!!!     Type 'string' is not assignable to type 'number'.
    i5 = i4; // should be an error
    ~~
!!! Type 'I4' is not assignable to type 'I5':
!!!   Types of property 'one' are incompatible:
!!!     Type 'number' is not assignable to type 'string'.