hclsyntax: Tests for static expression analysis behaviors
We previously lacked tests for our implementstions of hcl.AbsTraversalForExpr, hcl.ExprList, and hcl.ExprMap. These are now tested.
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131
hcl/hclsyntax/expression_static_test.go
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131
hcl/hclsyntax/expression_static_test.go
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package hclsyntax
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import (
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"testing"
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"github.com/go-test/deep"
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"github.com/hashicorp/hcl2/hcl"
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"github.com/zclconf/go-cty/cty"
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)
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func TestTraversalStatic(t *testing.T) {
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expr, diags := ParseExpression([]byte(`a.b.c`), "", hcl.Pos{Line: 1, Column: 1})
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got, moreDiags := hcl.AbsTraversalForExpr(expr)
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diags = append(diags, moreDiags...)
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if len(diags) != 0 {
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t.Errorf("wrong number of diags %d; want 0", len(diags))
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for _, diag := range diags {
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t.Logf("- %s", diag)
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}
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return
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}
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want := hcl.Traversal{
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hcl.TraverseRoot{
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Name: "a",
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SrcRange: hcl.Range{
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Start: hcl.Pos{Line: 1, Column: 1, Byte: 0},
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End: hcl.Pos{Line: 1, Column: 2, Byte: 1},
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},
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},
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hcl.TraverseAttr{
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Name: "b",
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SrcRange: hcl.Range{
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Start: hcl.Pos{Line: 1, Column: 2, Byte: 1},
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End: hcl.Pos{Line: 1, Column: 4, Byte: 3},
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},
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},
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hcl.TraverseAttr{
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Name: "c",
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SrcRange: hcl.Range{
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Start: hcl.Pos{Line: 1, Column: 4, Byte: 3},
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End: hcl.Pos{Line: 1, Column: 6, Byte: 5},
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},
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},
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}
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for _, problem := range deep.Equal(got, want) {
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t.Errorf(problem)
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}
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}
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func TestTupleStatic(t *testing.T) {
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expr, diags := ParseExpression([]byte(`[true, false]`), "", hcl.Pos{Line: 1, Column: 1})
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exprs, moreDiags := hcl.ExprList(expr)
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diags = append(diags, moreDiags...)
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if len(diags) != 0 {
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t.Errorf("wrong number of diags %d; want 0", len(diags))
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for _, diag := range diags {
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t.Logf("- %s", diag)
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}
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return
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}
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if got, want := len(exprs), 2; got != want {
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t.Fatalf("wrong length %d; want %d", got, want)
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}
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got := make([]cty.Value, len(exprs))
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want := []cty.Value{
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cty.True,
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cty.False,
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}
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for i, itemExpr := range exprs {
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val, valDiags := itemExpr.Value(nil)
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if len(valDiags) != 0 {
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t.Errorf("wrong number of diags %d; want 0", len(valDiags))
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for _, diag := range valDiags {
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t.Logf("- %s", diag)
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}
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return
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}
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got[i] = val
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}
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for _, problem := range deep.Equal(got, want) {
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t.Errorf(problem)
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}
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}
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func TestMapStatic(t *testing.T) {
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expr, diags := ParseExpression([]byte(`{"foo":true,"bar":false}`), "", hcl.Pos{Line: 1, Column: 1})
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items, moreDiags := hcl.ExprMap(expr)
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diags = append(diags, moreDiags...)
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if len(diags) != 0 {
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t.Errorf("wrong number of diags %d; want 0", len(diags))
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for _, diag := range diags {
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t.Logf("- %s", diag)
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}
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return
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}
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if got, want := len(items), 2; got != want {
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t.Fatalf("wrong length %d; want %d", got, want)
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}
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got := make(map[cty.Value]cty.Value)
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want := map[cty.Value]cty.Value{
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cty.StringVal("foo"): cty.True,
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cty.StringVal("bar"): cty.False,
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}
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for _, item := range items {
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var itemDiags hcl.Diagnostics
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key, keyDiags := item.Key.Value(nil)
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itemDiags = append(itemDiags, keyDiags...)
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val, valDiags := item.Value.Value(nil)
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itemDiags = append(itemDiags, valDiags...)
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if len(itemDiags) != 0 {
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t.Errorf("wrong number of diags %d; want 0", len(itemDiags))
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for _, diag := range itemDiags {
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t.Logf("- %s", diag)
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}
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return
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}
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got[key] = val
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}
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for _, problem := range deep.Equal(got, want) {
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t.Errorf(problem)
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}
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}
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