121 lines
3.8 KiB
Swift
121 lines
3.8 KiB
Swift
import Spectre
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@testable import Stencil
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func testFilter() {
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describe("template filters") {
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let context: [String: Any] = ["name": "Kyle"]
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$0.it("allows you to register a custom filter") {
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let template = Template(templateString: "{{ name|repeat }}")
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let namespace = Namespace()
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namespace.registerFilter("repeat") { (value: Any?) in
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if let value = value as? String {
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return "\(value) \(value)"
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}
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return nil
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}
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let result = try template.render(Context(dictionary: context, namespace: namespace))
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try expect(result) == "Kyle Kyle"
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}
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$0.it("allows you to register a custom filter which accepts arguments") {
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let template = Template(templateString: "{{ name|repeat:'value' }}")
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let namespace = Namespace()
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namespace.registerFilter("repeat") { value, arguments in
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if !arguments.isEmpty {
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return "\(value!) \(value!) with args \(arguments.first!!)"
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}
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return nil
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}
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let result = try template.render(Context(dictionary: context, namespace: namespace))
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try expect(result) == "Kyle Kyle with args value"
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}
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$0.it("allows you to register a custom which throws") {
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let template = Template(templateString: "{{ name|repeat }}")
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let namespace = Namespace()
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namespace.registerFilter("repeat") { (value: Any?) in
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throw TemplateSyntaxError("No Repeat")
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}
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try expect(try template.render(Context(dictionary: context, namespace: namespace))).toThrow(TemplateSyntaxError("No Repeat"))
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}
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$0.it("allows whitespace in expression") {
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let template = Template(templateString: "{{ name | uppercase }}")
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let result = try template.render(Context(dictionary: ["name": "kyle"]))
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try expect(result) == "KYLE"
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}
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$0.it("throws when you pass arguments to simple filter") {
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let template = Template(templateString: "{{ name|uppercase:5 }}")
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try expect(try template.render(Context(dictionary: ["name": "kyle"]))).toThrow()
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}
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}
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describe("capitalize filter") {
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let template = Template(templateString: "{{ name|capitalize }}")
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$0.it("capitalizes a string") {
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let result = try template.render(Context(dictionary: ["name": "kyle"]))
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try expect(result) == "Kyle"
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}
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}
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describe("uppercase filter") {
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let template = Template(templateString: "{{ name|uppercase }}")
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$0.it("transforms a string to be uppercase") {
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let result = try template.render(Context(dictionary: ["name": "kyle"]))
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try expect(result) == "KYLE"
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}
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}
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describe("lowercase filter") {
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let template = Template(templateString: "{{ name|lowercase }}")
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$0.it("transforms a string to be lowercase") {
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let result = try template.render(Context(dictionary: ["name": "Kyle"]))
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try expect(result) == "kyle"
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}
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}
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describe("default filter") {
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let template = Template(templateString: "Hello {{ name|default:\"World\" }}")
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$0.it("shows the variable value") {
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let result = try template.render(Context(dictionary: ["name": "Kyle"]))
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try expect(result) == "Hello Kyle"
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}
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$0.it("shows the default value") {
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let result = try template.render(Context(dictionary: [:]))
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try expect(result) == "Hello World"
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}
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$0.it("supports multiple defaults") {
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let template = Template(templateString: "Hello {{ name|default:a,b,c,\"World\" }}")
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let result = try template.render(Context(dictionary: [:]))
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try expect(result) == "Hello World"
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}
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}
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describe("join filter") {
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let template = Template(templateString: "{{ value|join:\", \" }}")
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$0.it("transforms a string to be lowercase") {
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let result = try template.render(Context(dictionary: ["value": ["One", "Two"]]))
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try expect(result) == "One, Two"
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}
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}
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}
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