replace jest with ava

node_modules/concordance/lib/primitiveValues/symbol.js

@@ -0,0 +1,114 @@
+'use strict'
+
+const stringEscape = require('js-string-escape')
+const wellKnownSymbols = require('well-known-symbols')
+
+const constants = require('../constants')
+const formatUtils = require('../formatUtils')
+const lineBuilder = require('../lineBuilder')
+
+const DEEP_EQUAL = constants.DEEP_EQUAL
+const UNEQUAL = constants.UNEQUAL
+
+function describe (value) {
+  let stringCompare = null
+
+  const key = Symbol.keyFor(value)
+  if (key !== undefined) {
+    stringCompare = `Symbol.for(${stringEscape(key)})`
+  } else if (wellKnownSymbols.isWellKnown(value)) {
+    stringCompare = wellKnownSymbols.getLabel(value)
+  }
+
+  return new SymbolValue({
+    stringCompare,
+    value
+  })
+}
+exports.describe = describe
+
+function deserialize (state) {
+  const stringCompare = state[0]
+  const string = state[1] || state[0]
+
+  return new DeserializedSymbolValue({
+    string,
+    stringCompare,
+    value: null
+  })
+}
+exports.deserialize = deserialize
+
+const tag = Symbol('SymbolValue')
+exports.tag = tag
+
+class SymbolValue {
+  constructor (props) {
+    this.stringCompare = props.stringCompare
+    this.value = props.value
+  }
+
+  compare (expected) {
+    if (expected.tag !== tag) return UNEQUAL
+
+    if (this.stringCompare !== null) {
+      return this.stringCompare === expected.stringCompare
+        ? DEEP_EQUAL
+        : UNEQUAL
+    }
+
+    return this.value === expected.value
+      ? DEEP_EQUAL
+      : UNEQUAL
+  }
+
+  formatString () {
+    if (this.stringCompare !== null) return this.stringCompare
+    return stringEscape(this.value.toString())
+  }
+
+  formatDeep (theme) {
+    return lineBuilder.single(formatUtils.wrap(theme.symbol, this.formatString()))
+  }
+
+  formatAsKey (theme) {
+    return formatUtils.wrap(theme.property.keyBracket, formatUtils.wrap(theme.symbol, this.formatString()))
+  }
+
+  serialize () {
+    const string = this.formatString()
+    return this.stringCompare === string
+      ? [this.stringCompare]
+      : [this.stringCompare, string]
+  }
+}
+Object.defineProperty(SymbolValue.prototype, 'isPrimitive', { value: true })
+Object.defineProperty(SymbolValue.prototype, 'tag', { value: tag })
+
+class DeserializedSymbolValue extends SymbolValue {
+  constructor (props) {
+    super(props)
+    this.string = props.string
+  }
+
+  compare (expected) {
+    if (expected.tag !== tag) return UNEQUAL
+
+    if (this.stringCompare !== null) {
+      return this.stringCompare === expected.stringCompare
+        ? DEEP_EQUAL
+        : UNEQUAL
+    }
+
+    // Symbols that are not in the global symbol registry, and are not
+    // well-known, cannot be compared when deserialized. Treat symbols
+    // as equal if they are formatted the same.
+    return this.string === expected.formatString()
+      ? DEEP_EQUAL
+      : UNEQUAL
+  }
+
+  formatString () {
+    return this.string
+  }
+}