public void Should_resume_reading_input_after_input_has_been_added(
int[] inputsAtStart,
int executions,
int addedInput)
{
var testOpCode = 11;
var prg = AssembleTestProgram(executions, testOpCode);
var state = new ComputerState
{
Memory = prg.ToArray(),
Inputs = new List <int>(inputsAtStart)
};
for (int i = 0; i < executions; i++)
{
TestedInstruction.Execute(state);
}
state.Inputs.Add(addedInput);
TestedInstruction.Execute(state);
Assert.Equal(
addedInput,
state.Memory[(executions - 1) * 2]);
}
public void Should_write_existing_input_before_awaiting_more_input(
int[] inputsAtStart,
int executions)
{
var testOpCode = 1;
var prg = AssembleTestProgram(executions, testOpCode);
var state = new ComputerState
{
Memory = prg.ToArray(),
Inputs = new List <int>(inputsAtStart)
};
for (int i = 0; i < executions; i++)
{
TestedInstruction.Execute(state);
}
for (int i = 0; i < executions - 1; i++)
{
Assert.Equal(inputsAtStart[i], state.Memory[i * 2]);
}
Assert.Equal(
testOpCode,
state.Memory[(executions - 1) * 2]);
}
public void Should_call_ExecuteInternal_on_derived_class_with_given_state()
{
var state = new ComputerState();
TestedInstruction.Execute(state);
Assert.True(_executeInternalExecuted, "ExecuteInternal not called.");
}
public void Should_set_halt_to_true_on_state()
{
var state = new ComputerState();
TestedInstruction.Execute(state);
Assert.True(state.Halt);
}
public void Should_advance_program_counter_with_length_of_instruction()
{
var state = new ComputerState
{
Memory = new[] { 0, 0 }
};
TestedInstruction.Execute(state);
Assert.Equal(1, state.ProgramCounter);
}
public void Should_write_value_from_addr1_to_state_output(
int[] prg)
{
var state = new ComputerState
{
Memory = (int[])prg.Clone()
};
TestedInstruction.Execute(state);
Assert.Equal(1, state.Output[0]);
}
public void Should_handle_position_mode_for_parameters(
int[] prg,
int expected)
{
var state = new ComputerState
{
Memory = prg
};
TestedInstruction.Execute(state);
Assert.Equal(expected, _actual);
}
public void Should_handle_immediate_mode_for_parameters(
int[] prg,
int expected)
{
var state = new ComputerState
{
Memory = prg
};
TestedInstruction.ParameterModes = 1 << (prg[0] - 1);
TestedInstruction.Execute(state);
Assert.Equal(expected, _actual);
}
public void Should_store_state_input_at_addr1(
int[] prg)
{
var state = new ComputerState
{
Memory = (int[])prg.Clone(),
Inputs = new List <int> {
9
}
};
TestedInstruction.Execute(state);
Assert.Equal(state.Inputs[0], state.Memory[prg[1]]);
}
public void Should_store_bool_at_addr3_showing_equality_of_in1_and_in2(
int parameterMode,
int[] prg,
int expected)
{
var state = new ComputerState
{
Memory = prg
};
TestedInstruction.ParameterModes = parameterMode;
TestedInstruction.Execute(state);
Assert.Equal(expected, state.Memory[4]);
}
public void Should_reset_halt_and_awaitingInput_flags_after_resuming_successfully()
{
var prg = AssembleTestProgram(1);
var state = new ComputerState
{
Memory = prg.ToArray()
};
TestedInstruction.Execute(state);
state.Inputs.Add(1337);
state.Halt = false;
TestedInstruction.Execute(state);
Assert.False(state.AwaitingInput, "State waiting for input.");
}
public void Should_set_program_counter_to_p2_when_p1_is_zero(
int parameterMode,
int[] prg,
int expected)
{
var state = new ComputerState
{
Memory = prg
};
TestedInstruction.ParameterModes = parameterMode;
TestedInstruction.Execute(state);
Assert.Equal(expected, state.ProgramCounter);
}
public void Should_use_inputs_in_sequence()
{
var input = new List <int> {
9, 5
};
var state = new ComputerState
{
Memory = new[] { 0, 0, 0, 2 },
Inputs = input
};
TestedInstruction.Execute(state);
TestedInstruction.Execute(state);
Assert.Equal(input, state.Inputs);
Assert.Equal(9, state.Memory[0]);
Assert.Equal(5, state.Memory[2]);
}
public void Should_handle_mixed_parameter_modes(
int parameterModes,
int[] prg,
int prgCounter,
int expected)
{
TestedInstruction.ParameterModes = parameterModes;
var state = new ComputerState
{
Memory = prg,
ProgramCounter = prgCounter
};
TestedInstruction.Execute(state);
Assert.Equal(expected, state.Memory[0]);
}
public void Should_in_addr_mode_add_values_at_addr1_and_addr2_and_write_to_addr3()
{
var in1 = 3;
var in2 = 7;
var state = new ComputerState
{
Memory = new[]
{
in1, in2, TestedInstruction.OpCode, 0, 1, 0
},
ProgramCounter = 2
};
TestedInstruction.Execute(state);
Assert.Equal(
in1 + in2,
state.Memory[0]);
}
public void Should_halt_and_set_awaitingInput_flag_when_input_is_requested_but_input_is_missing(
int[] inputsAtStart,
int executions)
{
var prg = AssembleTestProgram(executions);
var state = new ComputerState
{
Memory = prg.ToArray(),
Inputs = new List <int>(inputsAtStart)
};
for (int i = 0; i < executions; i++)
{
TestedInstruction.Execute(state);
}
Assert.True(state.Halt, "State not halted.");
Assert.True(state.AwaitingInput, "State not waiting for input.");
}
public void Should_handle_writing_multiple_output_values()
{
var state = new ComputerState
{
Memory = new[]
{
1, 0,
2, 2,
3, 4
}
};
TestedInstruction.Execute(state);
TestedInstruction.Execute(state);
TestedInstruction.Execute(state);
Assert.Equal(1, state.Output[0]);
Assert.Equal(2, state.Output[1]);
Assert.Equal(3, state.Output[2]);
}
public void Should_in_immediate_mode_multiply_value1_and_value2_and_write_to_addr3()
{
var in1 = 3;
var in2 = 7;
var state = new ComputerState
{
Memory = new[]
{
TestedInstruction.OpCode, in1, in2, 0
}
};
TestedInstruction.ParameterModes = 0b11;
TestedInstruction.Execute(state);
Assert.Equal(
in1 * in2,
state.Memory[0]);
}