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implement variables for aviator files
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| package evaluator | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "regexp" | ||
| "strings" | ||
| ) | ||
|
|
||
| var variableFormatRegex = regexp.MustCompile(`\(\(\s([-\w\p{L}]+)\s\)\)`) | ||
|
|
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| func Evaluate(aviatorFile []byte, vars map[string]string) ([]byte, error) { | ||
| var err error | ||
| return variableFormatRegex.ReplaceAllFunc(aviatorFile, func(match []byte) []byte { | ||
| key := string(variableFormatRegex.FindSubmatch(match)[1]) | ||
|
|
||
| val, ok := vars[key] | ||
| if !ok { | ||
| err = errors.New(fmt.Sprintf("Variable (( %s )) not provided", key)) | ||
| } | ||
|
|
||
| var replace []byte | ||
| if strings.Contains(val, "\n") { | ||
| replace, _ = json.Marshal(val) | ||
| } else { | ||
| replace = []byte(val) | ||
| } | ||
|
|
||
| return []byte(replace) | ||
| }), err | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| package evaluator_test | ||
|
|
||
| import ( | ||
| "strings" | ||
|
|
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| . "github.com/onsi/ginkgo" | ||
| . "github.com/onsi/gomega" | ||
|
|
||
| . "github.com/JulzDiverse/aviator/evaluator" | ||
| ) | ||
|
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| var _ = Describe("Evaluate", func() { | ||
| Context("When evaluating an aviator file variable", func() { | ||
|
|
||
| var ( | ||
| aviatorYaml string | ||
| expectedYaml string | ||
| evaluated []byte | ||
| err error | ||
| vars map[string]string | ||
| ) | ||
|
|
||
| JustBeforeEach(func() { | ||
| evaluated, err = Evaluate([]byte(aviatorYaml), vars) | ||
| }) | ||
|
|
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| Context("When the varialbe key is an existing key", func() { | ||
| Context("When the value is a usual value", func() { | ||
| BeforeEach(func() { | ||
| vars = map[string]string{ | ||
| "base_yaml": "base.yml", | ||
| } | ||
|
|
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| aviatorYaml = `--- | ||
| spruce: | ||
| - base: (( base_yaml )).old` | ||
|
|
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| expectedYaml = `--- | ||
| spruce: | ||
| - base: base.yml.old` | ||
| }) | ||
|
|
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| It("should replace the key with it's provided value", func() { | ||
| Expect(err).ToNot(HaveOccurred()) | ||
| Expect(strings.TrimSpace(string(evaluated))).To(Equal(expectedYaml)) | ||
| }) | ||
| }) | ||
|
|
||
| Context("When the value is a mulit-line value", func() { | ||
| BeforeEach(func() { | ||
| vars = map[string]string{ | ||
| "multi_line": `hello | ||
| world`, | ||
| } | ||
|
|
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| aviatorYaml = `--- | ||
| fly: | ||
| vars: | ||
| key: (( multi_line ))` | ||
|
|
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| expectedYaml = `--- | ||
| fly: | ||
| vars: | ||
| key: "hello\nworld"` | ||
|
|
||
| }) | ||
|
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| It("should replace the key with it's provided value", func() { | ||
| Expect(err).ToNot(HaveOccurred()) | ||
| Expect(strings.TrimSpace(string(evaluated))).To(Equal(expectedYaml)) | ||
| }) | ||
| }) | ||
| }) | ||
|
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| Context("When the variable key is not existing", func() { | ||
| BeforeEach(func() { | ||
| aviatorYaml = `--- | ||
| key: (( not_provided ))` | ||
| }) | ||
|
|
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| It("should fail", func() { | ||
| Expect(err).To(HaveOccurred()) | ||
| }) | ||
|
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| It("should return a meaningful error message", func() { | ||
| Expect(err).To(MatchError(ContainSubstring("Variable (( not_provided )) not provided"))) | ||
| }) | ||
| }) | ||
| }) | ||
| }) |
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