Merge pull request #8 from ilmanzo/num_tests

add some tests for num instructions

wasm/vm_num_test.go

@@ -1,3 +1,103 @@
 package wasm
 
-// fixme
+import (
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+)
+
+type NumTestSuite struct {
+	suite.Suite
+	vm *VirtualMachine
+}
+
+func (suite *NumTestSuite) SetupTest() {
+	suite.vm = &VirtualMachine{
+		OperandStack: NewVirtualMachineOperandStack(),
+	}
+}
+
+func (suite *NumTestSuite) Testi32eqz() {
+	var testTable = []struct {
+		input int
+		want  uint64
+	}{
+		{input: 0, want: 1},
+		{input: 1, want: 0},
+	}
+	for _, tt := range testTable {
+		suite.vm.OperandStack.Push(uint64(tt.input))
+		i32eqz(suite.vm)
+		suite.Equal(tt.want, suite.vm.OperandStack.Pop())
+	}
+}
+
+func (suite *NumTestSuite) Testi32ne() {
+	var testTable = []struct {
+		input [2]int
+		want  uint64
+	}{
+		{input: [2]int{3, 4}, want: 1},
+		{input: [2]int{3, 3}, want: 0},
+	}
+	for _, tt := range testTable {
+		suite.vm.OperandStack.Push(uint64(tt.input[0]))
+		suite.vm.OperandStack.Push(uint64(tt.input[1]))
+		i32ne(suite.vm)
+		suite.Equal(tt.want, suite.vm.OperandStack.Pop())
+	}
+}
+
+func (suite *NumTestSuite) Testi32lts() {
+	var testTable = []struct {
+		input [2]int
+		want  uint64
+	}{
+		{input: [2]int{-4, 1}, want: 1},
+		{input: [2]int{4, -1}, want: 0},
+	}
+	for _, tt := range testTable {
+		suite.vm.OperandStack.Push(uint64(tt.input[0]))
+		suite.vm.OperandStack.Push(uint64(tt.input[1]))
+		i32lts(suite.vm)
+		suite.Equal(tt.want, suite.vm.OperandStack.Pop())
+	}
+}
+
+func (suite *NumTestSuite) Testi32ltu() {
+	var testTable = []struct {
+		input [2]int
+		want  uint64
+	}{
+		{input: [2]int{1, 4}, want: 1},
+		{input: [2]int{4, 1}, want: 0},
+	}
+	for _, tt := range testTable {
+		suite.vm.OperandStack.Push(uint64(tt.input[0]))
+		suite.vm.OperandStack.Push(uint64(tt.input[1]))
+		i32ltu(suite.vm)
+		suite.Equal(tt.want, suite.vm.OperandStack.Pop())
+	}
+}
+
+func (suite *NumTestSuite) Testi32gts() {
+	var testTable = []struct {
+		input [2]int
+		want  uint64
+	}{
+		{input: [2]int{1, -4}, want: 1},
+		{input: [2]int{-4, 1}, want: 0},
+	}
+	for _, tt := range testTable {
+		suite.vm.OperandStack.Push(uint64(tt.input[0]))
+		suite.vm.OperandStack.Push(uint64(tt.input[1]))
+		i32gts(suite.vm)
+		suite.Equal(tt.want, suite.vm.OperandStack.Pop())
+	}
+}
+
+// In order for 'go test' to run this suite, we need to create
+// a normal test function and pass our suite to suite.Run
+func TestRunSuite(t *testing.T) {
+	suite.Run(t, new(NumTestSuite))
+}