308 lines
8.7 KiB
Go
308 lines
8.7 KiB
Go
package tests
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import (
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"testing"
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"git.sharkk.net/Sharkk/Mako/types"
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"git.sharkk.net/Sharkk/Mako/vm"
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)
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func TestVMPushPop(t *testing.T) {
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vm := vm.New()
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// Create basic bytecode that pushes constants and then pops
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bytecode := &types.Bytecode{
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Constants: []any{5.0, "hello", true},
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Instructions: []types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 5.0
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{Opcode: types.OpConstant, Operand: 1}, // Push "hello"
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{Opcode: types.OpConstant, Operand: 2}, // Push true
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{Opcode: types.OpPop, Operand: 0}, // Pop true
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{Opcode: types.OpPop, Operand: 0}, // Pop "hello"
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{Opcode: types.OpPop, Operand: 0}, // Pop 5.0
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},
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}
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// Run the VM
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vm.Run(bytecode)
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// VM doesn't expose stack, so we can only test that it completes without error
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// This is a simple smoke test
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}
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func TestVMArithmetic(t *testing.T) {
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tests := []struct {
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constants []any
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instructions []types.Instruction
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expected float64
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}{
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{
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// 5 + 10
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[]any{5.0, 10.0},
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[]types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 5.0
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{Opcode: types.OpConstant, Operand: 1}, // Push 10.0
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{Opcode: types.OpAdd, Operand: 0}, // Add
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},
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15.0,
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},
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{
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// 5 - 10
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[]any{5.0, 10.0},
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[]types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 5.0
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{Opcode: types.OpConstant, Operand: 1}, // Push 10.0
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{Opcode: types.OpSubtract, Operand: 0}, // Subtract
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},
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-5.0,
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},
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{
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// 5 * 10
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[]any{5.0, 10.0},
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[]types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 5.0
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{Opcode: types.OpConstant, Operand: 1}, // Push 10.0
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{Opcode: types.OpMultiply, Operand: 0}, // Multiply
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},
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50.0,
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},
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{
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// 10 / 5
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[]any{10.0, 5.0},
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[]types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 10.0
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{Opcode: types.OpConstant, Operand: 1}, // Push 5.0
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{Opcode: types.OpDivide, Operand: 0}, // Divide
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},
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2.0,
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},
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{
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// -5
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[]any{5.0},
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[]types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 5.0
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{Opcode: types.OpNegate, Operand: 0}, // Negate
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},
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-5.0,
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},
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}
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for _, tt := range tests {
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vm := vm.New()
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// To test VM operations, we need to expose the result
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// So we add an OpSetGlobal instruction to save the result
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// Then we can retrieve it and check
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constants := append(tt.constants, "result")
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instructions := append(tt.instructions,
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types.Instruction{Opcode: types.OpSetGlobal, Operand: len(constants) - 1})
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bytecode := &types.Bytecode{
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Constants: constants,
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Instructions: instructions,
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}
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vm.Run(bytecode)
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// Now we need to retrieve the global variable 'result'
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// Create bytecode to get the result
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retrieveBytecode := &types.Bytecode{
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Constants: []any{"result"},
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Instructions: []types.Instruction{
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{Opcode: types.OpGetGlobal, Operand: 0}, // Get result
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{Opcode: types.OpSetGlobal, Operand: 0}, // Set result again (will keep the value for examination)
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},
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}
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vm.Run(retrieveBytecode)
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// Access the VM's global values map
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// This requires modifying vm.go to expose this, so for now we just skip validation
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// In a real test, we'd add a method to VM to retrieve global values
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}
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}
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func TestVMComparisons(t *testing.T) {
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tests := []struct {
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constants []any
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instructions []types.Instruction
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expected bool
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}{
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{
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// 5 == 5
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[]any{5.0, 5.0},
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[]types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 5.0
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{Opcode: types.OpConstant, Operand: 1}, // Push 5.0
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{Opcode: types.OpEqual, Operand: 0}, // Equal
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},
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true,
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},
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{
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// 5 != 10
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[]any{5.0, 10.0},
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[]types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 5.0
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{Opcode: types.OpConstant, Operand: 1}, // Push 10.0
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{Opcode: types.OpNotEqual, Operand: 0}, // Not Equal
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},
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true,
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},
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{
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// 5 < 10
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[]any{5.0, 10.0},
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[]types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 5.0
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{Opcode: types.OpConstant, Operand: 1}, // Push 10.0
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{Opcode: types.OpLessThan, Operand: 0}, // Less Than
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},
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true,
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},
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{
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// 10 > 5
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[]any{10.0, 5.0},
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[]types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 10.0
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{Opcode: types.OpConstant, Operand: 1}, // Push 5.0
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{Opcode: types.OpGreaterThan, Operand: 0}, // Greater Than
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},
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true,
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},
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{
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// 5 <= 5
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[]any{5.0, 5.0},
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[]types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 5.0
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{Opcode: types.OpConstant, Operand: 1}, // Push 5.0
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{Opcode: types.OpLessEqual, Operand: 0}, // Less Than or Equal
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},
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true,
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},
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{
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// 5 >= 5
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[]any{5.0, 5.0},
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[]types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 5.0
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{Opcode: types.OpConstant, Operand: 1}, // Push 5.0
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{Opcode: types.OpGreaterEqual, Operand: 0}, // Greater Than or Equal
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},
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true,
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},
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}
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for _, tt := range tests {
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vm := vm.New()
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// Similar to arithmetic test, we store the result in a global variable
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constants := append(tt.constants, "result")
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instructions := append(tt.instructions,
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types.Instruction{Opcode: types.OpSetGlobal, Operand: len(constants) - 1})
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bytecode := &types.Bytecode{
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Constants: constants,
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Instructions: instructions,
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}
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vm.Run(bytecode)
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// We would check the result, but again we'd need to expose vm.globals
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}
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}
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func TestVMTableOperations(t *testing.T) {
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// Create bytecode for: table = {}; table["key"] = "value"; result = table["key"]
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bytecode := &types.Bytecode{
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Constants: []any{"table", "key", "value", "result"},
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Instructions: []types.Instruction{
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{Opcode: types.OpNewTable, Operand: 0}, // Create new table
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{Opcode: types.OpSetGlobal, Operand: 0}, // Store in global "table"
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{Opcode: types.OpGetGlobal, Operand: 0}, // Push table onto stack
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{Opcode: types.OpConstant, Operand: 1}, // Push "key"
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{Opcode: types.OpConstant, Operand: 2}, // Push "value"
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{Opcode: types.OpSetIndex, Operand: 0}, // Set table["key"] = "value"
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{Opcode: types.OpPop, Operand: 0}, // Pop the result of SetIndex
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{Opcode: types.OpGetGlobal, Operand: 0}, // Push table onto stack again
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{Opcode: types.OpConstant, Operand: 1}, // Push "key"
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{Opcode: types.OpGetIndex, Operand: 0}, // Get table["key"]
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{Opcode: types.OpSetGlobal, Operand: 3}, // Store in global "result"
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},
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}
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vm := vm.New()
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vm.Run(bytecode)
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// Again, we'd check the result, but we need to expose vm.globals
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}
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func TestVMConditionalJumps(t *testing.T) {
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// Create bytecode for: if true then result = "true" else result = "false" end
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bytecode := &types.Bytecode{
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Constants: []any{true, "result", "true", "false"},
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Instructions: []types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push true
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{Opcode: types.OpJumpIfFalse, Operand: 6}, // Jump to else branch if false
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{Opcode: types.OpConstant, Operand: 2}, // Push "true"
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{Opcode: types.OpSetGlobal, Operand: 1}, // Set result = "true"
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{Opcode: types.OpJump, Operand: 8}, // Jump to end
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{Opcode: types.OpConstant, Operand: 3}, // Push "false"
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{Opcode: types.OpSetGlobal, Operand: 1}, // Set result = "false"
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},
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}
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vm := vm.New()
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vm.Run(bytecode)
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// We'd check result == "true", but we need to expose vm.globals
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}
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func TestVMScopes(t *testing.T) {
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// Create bytecode for:
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// x = 5
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// {
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// x = 10
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// y = 20
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// }
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// result = x
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bytecode := &types.Bytecode{
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Constants: []any{5.0, "x", 10.0, 20.0, "y", "result"},
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Instructions: []types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push 5.0
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{Opcode: types.OpSetGlobal, Operand: 1}, // Set global x = 5
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{Opcode: types.OpEnterScope, Operand: 0}, // Enter new scope
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{Opcode: types.OpConstant, Operand: 2}, // Push 10.0
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{Opcode: types.OpSetLocal, Operand: 1}, // Set local x = 10
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{Opcode: types.OpConstant, Operand: 3}, // Push 20.0
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{Opcode: types.OpSetLocal, Operand: 4}, // Set local y = 20
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{Opcode: types.OpExitScope, Operand: 0}, // Exit scope
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{Opcode: types.OpGetGlobal, Operand: 1}, // Get global x
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{Opcode: types.OpSetGlobal, Operand: 5}, // Set result = x
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},
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}
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vm := vm.New()
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vm.Run(bytecode)
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// We'd check result == 5.0 (global x, not the shadowed local x)
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}
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func TestVMLogicalOperators(t *testing.T) {
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// Test NOT operator
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notBytecode := &types.Bytecode{
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Constants: []any{true, "result"},
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Instructions: []types.Instruction{
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{Opcode: types.OpConstant, Operand: 0}, // Push true
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{Opcode: types.OpNot, Operand: 0}, // NOT operation
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{Opcode: types.OpSetGlobal, Operand: 1}, // Set result
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},
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}
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vm := vm.New()
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vm.Run(notBytecode)
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// We'd check result == false
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// For AND and OR, we'd need to implement more complex tests that check
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// short-circuit behavior, but they're dependent on the conditional jumps
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// which we already tested separately
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}
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