expressions working

Signed-off-by: Casey Lee <cplee@nektos.com>

act/runner/expression_test.go

@@ -0,0 +1,69 @@
+package runner
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestEvaluate(t *testing.T) {
+	assert := assert.New(t)
+	rc := &RunContext{
+		Config: &Config{
+			Workdir: ".",
+		},
+	}
+	ee := rc.NewExpressionEvaluator()
+
+	tables := []struct {
+		in      string
+		out     string
+		errMesg string
+	}{
+		{" 1 ", "1", ""},
+		{"1 + 3", "4", ""},
+		{"(1 + 3) * -2", "-8", ""},
+		{"'my text'", "my text", ""},
+		{"contains('my text', 'te')", "true", ""},
+		{"contains('my TEXT', 'te')", "true", ""},
+		{"contains(['my text'], 'te')", "false", ""},
+		{"contains(['foo','bar'], 'bar')", "true", ""},
+		{"startsWith('hello world', 'He')", "true", ""},
+		{"endsWith('hello world', 'ld')", "true", ""},
+		{"format('0:{0} 2:{2} 1:{1}', 'zero', 'one', 'two')", "0:zero 2:two 1:one", ""},
+		{"join(['hello'],'octocat')", "hello octocat", ""},
+		{"join(['hello','mona','the'],'octocat')", "hello mona the octocat", ""},
+		{"join('hello','mona')", "hello mona", ""},
+		{"toJSON({'foo':'bar'})", "{\n  \"foo\": \"bar\"\n}", ""},
+		{"hashFiles('**/package-lock.json')", "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", ""},
+	}
+
+	for _, table := range tables {
+		table := table
+		t.Run(table.in, func(t *testing.T) {
+			out, err := ee.Evaluate(table.in)
+			if table.errMesg == "" {
+				assert.NoError(err, table.in)
+				assert.Equal(table.out, out)
+			} else {
+				assert.Error(err)
+				assert.Equal(table.errMesg, err.Error())
+			}
+		})
+	}
+}
+
+func TestInterpolate(t *testing.T) {
+	assert := assert.New(t)
+	rc := &RunContext{
+		Config: &Config{
+			Workdir: ".",
+		},
+	}
+	ee := rc.NewExpressionEvaluator()
+
+	out, err := ee.Interpolate(" ${{1}} to ${{2}} ")
+
+	assert.NoError(err)
+	assert.Equal(" 1 to 2 ", out)
+}